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Sun Cobalt StaQware User Manual

1. 9 Standby RaQ Assimilation Step 3 of 3 Cluster Status T T QQ Standby RaQ IP Address A ESET 9 Standby RaQ Administrator Password B i Standby RaQ Administrator Password again C 9 Availability Monitoring Network 1 Configuration TT 9 Active RaQ Network 1 IP Address D Standby RaQ Network 1 IP Address E Monitoring Network 1 Subnet Mask 255 255 0 0 F 9 Data Synchronization Network 2 Configuration Active RaQ Network 2 IP Address 172 27 27 1 G Standby RaQ Network 2 IP Address maaa H o Synchronization Network 2 Subnet Mask 255 255 255 0 I EB Enable Cluster Cobalt StaQware Cluster User Manual 27 Chapter 2 Setting Up the Cluster Screen 3 of the Configuration Wizard contains the following fields The last page of this user manual is a worksheet that you can tear out and use to keep track of the IP addresses necessary for the StaQware Cluster software to run on your RaQ servers the worksheet includes a copy of Figure 6 Standby RaQ Acquisition The active RaQ uses this IP address to acquire the standby RaQ 1 Standby RaQ IP address Enter the main IP address for the Network 1 interface of the standby RaQ the IP address that is displayed on the LCD screen Before the active RaQ configures the standby RaQ the standby RaQ must have an IP address on the same subnet as the active RaQ and its gateway See A in Figure 6 Standby RaQ Administrator pass
2. language of your product 3 Locate the RaQ3E Update OS 2 0 pkg file 4 Transfer the file to your personal computer Cobalt StaQware Cluster User Manual 19 Chapter 2 Setting Up the Cluster Installing OS Update 2 0 To install the OS Update 2 0 on the active RaQ through the standard Cobalt browser based user interface UI 1 Launch your browser software 2 Type in the URL for the RaQ Admin Server http lt IP address gt admin In the confirmation dialog enter the user name and password for the RaQ Administrator The Server Management screen of the active RaQ appears 3 On the Server Management screen click Maintenance on the left The File Backup table appears 4 Click Install Software at the top The Install Software and Software on the Cobalt Server tables appear 5 Click Browse to locate the OS Update 2 0 pkg file on your personal computer 6 Click Open to select the pkg file 7 Click Install a pkg file to load the OS Update 2 0 pkg file on the active RaQ The mouse pointer changes to a spinning watch to indicate that the pkg file is installing The installation can take several minutes depending on the bandwidth of your connection to the RaQ 8 When the installation is finished you see a message that the software installed successfully You are prompted to reboot the RaQ in order to enable OS Update 2 0 Click OK to reboot the RaQ 20 Cobalt StaQware Cluster User Manual System setup
3. Installing the StaQware Cluster software The StaQware Cluster software package file pkg is installed initially on the active RaQ through the browser based UI The Configuration Wizard then walks you through the process of acquiring a standby RaQ To install the StaQware Cluster software on the active RaQ 1 Launch your browser software 2 Type in the URL for the RaQ Admin Server http lt IP address gt admin In the confirmation dialog enter the user name and password for the RaQ Administrator The Server Management screen of the active RaQ appears 3 On the Server Management screen click Maintenance on the left The File Backup table appears 4 Click Install Software at the top The Install Software table appears 5 Click Browse to locate the StaQware Cluster CD ROM on your personal computer 6 Select the folder that corresponds to the type of RaQ server on which you are installing the StaQware Cluster software RaQ 3i or RaQ 4i 7 Click Open to select the pkg file 8 Click Install a pkg file to load the StaQware Cluster pkg file on the active RaQ The mouse pointer changes to a spinning watch to indicate that the pkg file is installing The installation should take about five minutes 9 When the installation is finished you see a message that the software installed successfully You are prompted to reboot the RaQ in order to enable the StaQware Cluster Click OK to reboot the RaQ When the RaQ has re
4. LAN 5 mm Network 2 Network 1 T ort Data synchronization channel Monitoring channel Hub or switch Switch Standby RaQ Hub or switch Network 2 Network 1 LocalO D Gateway Data synchronization channel Monitoring channel Category 5 ethernet cable Note The back plane of the RaQ serverO has been simplified for this diagram Cobalt StaQware Cluster User Manual 17 Chapter 2 Setting Up the Cluster System setup Note If you are installing the StaQware Cluster software package p file on a pair of RaQ 3i servers you must first install the OS Update 2 0 package or later on the active RaQ OS Update 2 0 is included on the StaQware Cluster CD ROM refer to the following paragraphs If you are installing the software package on a pair of RaQ 4i servers this update is already included in the RaQ 4 OS You can proceed to Installing the StaQware Cluster software on page 21 Verifying OS Update 2 0 on the active RaQ To verify whether you have OS Update 2 0 on the active RaQ 1 Onthe Server Management screen of the active RaQ click Maintenance on the left The File Backup table appears 2 Click Install Software at the top The Install Software and Software on the Cobalt Server tables appear 3 If you have installed OS Update 2 0 on the active RaQ it appears in the Software on the Cobalt Server table as RaQ3E Update OS Release 2 0 You can continue with setting up the StaQware Cluster software If you have not i
5. Note Before you can configure the standby RaQ in the p Configuration Wizard you have to connect the two RaQ servers correctly over the network See Figure 1 or Figure 2 If the Network 2 connector on the active RaQ is being used for server maintenance use the wiring solution as displayed in Figure 2 Z Note The two RaQ servers must be on the same physical subnet Setting up the active RaQ You can use an existing RaQ on your network or a new RaQ as the active RaQ If you are using a new RaQ as the active RaQ follow the setup procedure in the RaQ user manual prior to installing the StaQware Cluster software Setting up the standby RaQ You can use an existing RaQ on your network or a new RaQ as the standby RaQ If you are using a new RaQ as the standby RaQ follow the LCD setup procedure in the RaQ user manual You only need to enter the IP address for the RaQ server Note You do not have to go through the browser based Setup Wizard for the standby RaQ You only need to enter the IP address for the standby RaQ through the LCD console Cobalt StaQware Cluster User Manual 13 Chapter 2 Setting Up the Cluster Connecting the two RaQ servers For the StaQware Cluster software to function you must correctly connect the network interfaces of the two RaQ servers There are two methods for connecting the two RaQ servers a The Network 2 interfaces are connected directly by a crossover ethernet cable see Figure 1 b T
6. The File Backup table appears Click Install Software at the top The Install Software and Software on the Cobalt Server tables appears The Software on the Cobalt Server table lists the software and updates installed on the active RaQ Click the hypertext link for Cobalt StaQware Cluster The Cluster Status screen appears this screen is protected by the standard RaQ Administrator password Enter the admin user name and password in the dialog box When the StaQware Cluster software is loaded on the active RaQ there is also an alias added to the Web server configuration this allows the RaQ Administrator to access the Cluster Status screen by pointing the browser at the URL http lt IP address gt ha 24 Cobalt StaQware Cluster User Manual UI based setup on the active RaQ Configuration Wizard When you first enter the StaQware Cluster the Cluster Status screen appears see Figure 4 The Cluster Status screen displays a colored circle to indicate the status of the StaQware Cluster Table 1 indicates the colors and the associated states of the StaQware Cluster When you first access the Cluster Status screen the circle is gray as the StaQware Cluster software has not been configured yet See Glossary on page 52 for an explanation of HA state and non HA state Table 1 Status colors Color Status Gray Unconfigured non HA state Green Normal functioning HA state Yellow Failover is
7. 227 14 Alt III as applicable 66 Cobalt StaQware Cluster User Manual The BSD Copyright The BSD Copyright Copyright 1991 1992 1993 1994 The Regents of the University of California All rights reserved Redistribution and use in source and binary forms with or without modification are permitted provided that the following conditions are met 1 Redistributions of source code must retain the above copyright notice this list of conditions and the following disclaimer 2 Redistributions in binary form must reproduce the above copyright notice this list of conditions and the following disclaimer in the documentation and or other materials provided with the distribution 3 All advertising materials mentioning features or use of this software must display the following acknowledgment This product includes software developed by the University of California Berkeley and its contributors 4 Neither the name of the University nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT INDIRECT INCIDENTAL SPECIAL EXEMPLARY OR CONSEQUENT
8. Cobalt Networks The Software includes the software supplied to you on disks diskettes CD ROM disks and or as part of the equipment enclosed with this package the Hardware and any modifications enhancements to and or replacements of such Software supplied to you by Cobalt Networks This Agreement also imposes certain restrictions on your use of the Software and Hardware You may not make any copy of any of the Software and you may not make any copy of any of the written materials accompanying the Software and or the Hardware The software on the OS Restore CD is intended to be used only to restore the Cobalt product to its initial factory functionality Cobalt Networks and its licensors retain ownership of the Software and no rights are granted to you other than a license to use the Software on the terms expressly set forth in this Agreement You acknowledge that the underlying structure sequence organization and source code of the Software and the design and structure of the Hardware are valuable trade secrets of Cobalt Networks and or its licensors and you agree not to decompile disassemble reverse engineer or modify in any way any of the Software or to reverse engineer the Hardware You may not transfer or assign your rights to use the Software except upon a transfer of any Hardware with which or for which it was supplied and then only if Cobalt Networks receives the written agreement of the transferee to be bound by
9. Europe Middle East and Africa call 31 71 565 7070 The Netherlands Customers in Japan can send email to support japan cobalt com Cobalt StaQware Cluster User Manual 7 Chapter 1 Introduction Further resources and information Cobalt also offers the following additional resources and information Solutions For business case information concerning Cobalt products or for solutions that extend the functionality of our products visit the Online Solutions Directory on Cobalt s Web site at http www cobalt com solutions Cobalt Developer Network Cobalt provides a wide range of resources such as technical notes and white papers for developers of Linux applications for Cobalt platforms Premium resources are also available To register with the Cobalt Developer Network at no cost visit the Web site at http developer cobalt com Discussion Groups Cobalt has made available a number of discussion groups through which users can share information You can view the current list of Cobalt discussion groups at http www cobalt com support resources usergroups html The names of the discussion groups show up as hypertext links To subscribe to or unsubscribe from a discussion group or to view previous postings to a group click on the group name A new browser window opens displaying information about the discussion group 6 Cobalt StaQware Cluster User Manual Further resources and information New discussion gro
10. Network 2 IP Address 17227271 Q Standby RaQ Network 2 IP Address 172227272 9 Synchronization Network 2 Subnet Mask 2552552550 Network parameters may not be modified unless the standby RaQ is accessible V The configuration has been saved successfully 32 Cobalt StaQware Cluster User Manual UI based setup on the active RaQ The active RaQ now begins the process of synchronizing its data to the standby RaQ Click Cluster Status on the left to view the progress of the data synchronization process a progress bar appears showing the percentage of the process completed See Figure 9 The process of synchronizing a standby RaQ takes approximately 1 5 hours depending on the size of the hard disk drive During this time the active RaQ can service requests but the automatic failover feature is not available until the process of data synchronization is complete Once the data synchronization process is finished the UI refreshes to show a green ball and that the StaQware Clusters services are active Figure 9 Data synchronization with the standby RaQ High Availability Cluster Management x 9 Cluster Status Data synchronization in progress Please wait Cluster Network e Failover Control 10 completed 60 minutes remaining Cluster Status 7 EI M erver Management Key Unconfigured Q Normal Failover Unavailable Severe Problem Cobalt StaQware Cluster User Manual 33 Chapter 2 Setting
11. StaQware Cluster goes into non HA state but data synchronization between the RaQ servers continues Note If the email notification address for the RaQ Administrator is an email address external to the RaQ server an email is sent but it will bounce The system tries to resend the email for four hours A disk I O on the active RaQ fails A disk write on the standby RaQ fails The standby RaQ fails over The active RaQ shuts down The StaQware Cluster goes into non HA state The StaQware Cluster goes into non HA state Cobalt StaQware Cluster User Manual 45 Chapter 4 Failover Scenarios Table 4 Possible failure scenarios Condition Result The power fails on the active RaQ The standby RaQ detects the failure of the active RaQ and fails over The StaQware Cluster goes into non HA state When the active RaQ is powered on again it becomes the standby RaQ The power fails on the standby RaQ The StaQware Cluster goes into non HA state When the standby RaQ is powered on again a full data synchronization occurs There is a power failure both the active RaQ and standby RaQ lose power individually and fail improper shutdown The StaQware Cluster is non operational Once the power returns the active RaQ searches for its standby RaQ and the standby RaQ searches for its active RaQ When power is restored a full data synchronization occurs 46 Cobalt StaQware Clust
12. Up the Cluster 34 Cobalt StaQware Cluster User Manual Chapter 3 Features of the StaQware Cluster software The RaQ Administrator configures the StaQware Cluster software through the browser based user interface UI this chapter describes the UI The UI for configuring the StaQware Cluster resides only on the active RaQ Note The term HA state means that the StaQware Cluster software EA is functioning normally on the cluster The automatic failover and the data synchronization features are available The term non HA state means that the automatic failover feature is not available and the data synchronization feature may or may not be available depending on the source of failure The RaQ Administrator can also perform tasks through the LCD console see Appendix A Using the LCD Console Access to the StaQware Cluster user interface You can access the StaOware Cluster UL in two ways e through a hypertext link on the Install Software screen e through the URL http lt IP address gt ha When the StaQware Cluster software is loaded on the active RaQ there is an alias added to the Web server configuration this allows the RaQ Administrator to access the Cluster Status screen by pointing the browser at the URL http lt IP address gt ha Cobalt StaQware Cluster User Manual 35 Chapter 3 Features of the StaQware Cluster software On the Install Software screen a hypertext link also appears in the Software on t
13. explains the LCD console functions Appendix B Warranty and Licenses lists the warranty and licensing information Worksheet is a worksheet to tear out and use to keep track of the IP addresses necessary for the StaQware Cluster software 6 Cobalt StaQware Cluster User Manual Customer Service and Technical Support Customer Service and Technical Support For Cobalt product information visit the support section of the Cobalt Web site at http www cobalt com support The site includes a Knowledge Base that customers can query a list of Frequently Asked Questions FAQs that provide additional information is also available through the Knowledge Base General Cobalt information In the U S A call 888 70 COBALT or 888 702 6225 or send email to info cobalt com Outside the U S A call 1 650 623 2500 or send email to info cobalt com In Europe the Middle East and Africa call 31 71 565 7000 The Netherlands or send email to info emea cobalt com In Japan send email to info japan cobalt com Cobalt Technical Support and Service Email contact You can contact Cobalt Networks Technical Support by email using the Online Email Support Form This form provides us all the information we need to service your request in a timely fashion Go to the URL http www cobalt com support and click on the Contact Support link Technical Support telephone numbers In the United States call 800 266 4378 In
14. gt lt IP address gt of the former active RaQ 4 The LCD screen on the former active RaQ displays PLEASE SWITCH POWER OFF NOW 62 Cobalt StaQware Cluster User Manual Appendix B Warranty and Licenses Cobalt Networks Inc Limited Warranty Cobalt Networks Cobalt warrants that the Cobalt RaQ Product will be free of defects in workmanship and materials Warranty for a period of one year from the date title passes to the original Customer Warranty Period subject to the limitations set forth herein The Warranty shall not apply to any modifications supplements additions or upgrades by Cobalt s authorized distributors authorized value added resellers or any third party Additionally the Warranty does not apply to repair or replacement caused or necessitated by i events occurring after risk of loss passes to the Customer such as loss or damage during shipment ii acts of God including without limitation natural acts such as fire flood wind earthquake lightning or similar disaster iii any upgrade outside the Product upgrade parameters and unauthorized modifications or incorporation into other goods or products iv improper use environment installation or electrical supply improper maintenance or any other misuse abuse or mishandling v governmental actions or inactions vi strikes or work stoppages vii Customer s failure to follow applicable use or operations instructions o
15. parameter to the maximum amount of time before you install the software The new software will be synchronized to the standby RaQ See Monitoring Outage Tolerance on page 40 40 Cobalt StaQware Cluster User Manual Features on the StaQware Cluster user interface If you want to perform maintenance on standby RaQ use the Temporarily Disable Monitoring feature so that you do not cause an email notification to be sent to the RaQ Administrator Choose an interval from the pull down menu save the changes and then power down the standby RaQ through the LCD console When you reboot the standby RaQ it will find its active RaQ There are also two buttons on the Failover Control screen a Failover Now b Disband Cluster Failover Now If you want to perform maintenance on an active RaQ for example to add memory or to physically disconnect the RaQ and move it you can use the Failover Now feature To invoke a failover 1 Click Failover Now The feature halts the active RaQ brings up the standby RaQ as the new active RaQ and powers down the former active RaQ properly 2 The new active RaQ is now in non HA state meaning that the automatic failover feature is not available The Cluster Status screen on the active RaQ displays a red circle indicating that a failover has occurred The LCD screen on the former active RaQ displays PLEASE POWER DOWN If you subsequently power on the former active RaQ on the same network it
16. searches for the new active RaQ If the former active RaQ finds the new active RaQ the former active RaQ becomes the standby RaQ If the former active RaQ does not find the new active RaQ after approximately five minutes it becomes the active RaQ To return a standby RaQ to normal RaQ server functionality you must rebuild the RaQ with the OS Restore CD Note Rebuilding the RaQ server with the OS Restore CD is a destructive process All data is lost on the rebuilt RaQ Cobalt StaQware Cluster User Manual 4 Chapter 3 Features of the StaQware Cluster software Disband Cluster At some point you may want to disband the StaQware Cluster To disband a cluster 1 On the Failover Control screen click Disband Cluster A confirmation dialog appears asking if you want to disband the StaQware Cluster 2 Click OK The buttons on the Failover Control screen are now disabled gray The Cluster Status screen shows a gray circle to indicate that the StaQware services are not configured The standby RaQ powers down and the LCD screen displays PLEASE POWER DOWN You can re enable the StaQware Cluster by proceeding through the steps of the Configuration Wizard again See Configuration Wizard on page 25 To return a disbanded standby RaQ to normal RaQ server functionality you must rebuild the RaQ with the OS Restore CD Note Rebuilding the RaQ server with the OS Restore CD is a p destructive process All data is lost on
17. COBALT StaQware Cluster Software User Manual zA n N lt A 0 S E 2000 2001 Cobalt Networks Inc All rights reserved Part Number 070 00222 02 Date 01 2001 The Cobalt logo Cobalt Networks Cube Cobalt Qube Qube Cobalt RaQ RaQ Cobalt CacheRaQ Cobalt NASRaQ Cobalt StaQware and BlueLinQ are trademarks or registered trademarks of Cobalt Networks Inc Linux is a trademark of Linus Torvalds All other company brand and product names may be registered trademarks or trademarks of their respective companies and are hereby recognized This publication and the information herein is furnished AS IS subject to change without notice and should not be construed as a commitment by Cobalt Networks Inc Furthermore Cobalt Networks Inc assumes no responsibility or liability for any errors or inaccuracies makes no warranty of any kind express implied or statutory with respect to this publication and expressly disclaims any and all warranties of merchantability fitness for particular purposes and non infringement of third party rights The majority of the software used within the Cobalt RaQ can be freely distributed under the terms of the BSD copyright and the GNU Public License However some applications remain the property of their owners and require their permission to redistribute The Cobalt RaQ includes software developed by the Apache Group for use in the Apache HTTP server project http www apache
18. DOWN Press the button Use the arrow buttons to toggle the cursor between Y and N Select Y to power down the system The OK to Power Off light on the back panel blinks The LCD screen displays PLEASE SWITCH POWER OFF NOW Toggle the On Off switch on the back panel to the Off position Cobalt StaQware Cluster User Manual 61 Appendix A Using the LCD Console Standby RaQ Through the LCD console on the standby RaQ you can e force the standby RaQ to fail over taking over services from the active RaQ The active RaQ shuts down automatically e shutdown in a way that allows the RaQ to close all open files and minimizes startup time the next time the RaQ is powered on This command is the same as on the active RaQ see Powering down on page 61 e reboot which restarts the entire RaQ This command is the same as on the active RaQ see Rebooting on page 60 e exit from the LCD commands without making any changes The LCD screen returns to the display STANDBY RAQ FOR lt IP address of the active RaQ gt Forcing a failover To force a failover from the LCD console of the standby RaQ 1 Onthe LCD console hold down the S button for approximately 2 seconds The LCD screen displays SELECT FAILOVER NOW 2 Press the button The LCD screen displays PREPARING TO FAILOVER 3 When the failover process is finished the LCD screen on the new active RaQ displays lt hostname domainname
19. IAL DAMAGES INCLUDING BUT NOT LIMITED TO PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES LOSS OF USE DATA OR PROFITS OR BUSINESS INTERRUPTION HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY WHETHER IN CONTRACT STRICT LIABILITY OR TORT INCLUDING NEGLIGENCE OR OTHERWISE ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE Cobalt StaQware Cluster User Manual 67 Appendix B Warranty and Licenses GNU General Public License Version 2 June 1991 Copyright C 1989 1991 Free Software Foundation Inc 59 Temple Place Suite 330 Boston MA 02111 1307 USA TERMS AND CONDITIONS FOR COPYING DISTRIBUTION AND MODIFICATION 0 This License applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of this General Public License The Program below refers to any such program or work and a work based on the Program means either the Program or any derivative work under copyright law that is to say a work containing the Program or a portion of it either verbatim or with modifications and or translated into another language Hereinafter translation is included without limitation in the term modification Each licensee is addressed as you Activities other than copying distribution and modification are not covered by this License they are outside its scope The act of running the Program i
20. Public License NO WARRANTY 11 BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE THERE IS NO WARRANTY FOR THE PROGRAM TO THE EXTENT PERMITTED BY APPLICABLE LAW EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND OR OTHER PARTIES PROVIDE THE PROGRAM AS IS WITHOUT WARRANTY OF ANY KIND EITHER EXPRESSED OR IMPLIED INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU SHOULD THE PROGRAM PROVE DEFECTIVE YOU ASSUME THE COST OF ALL NECESSARY SERVICING REPAIR OR CORRECTION 12 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER OR ANY OTHER PARTY WHO MAY MODIFY AND OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE BE LIABLE TO YOU FOR DAMAGES INCLUDING ANY GENERAL SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES Cobalt StaQware Cluster User Manual 73 Appendix B Warranty and Licenses 74 Cobalt StaQware Cluster User Manual Worksheet Request these IP addresses from your Network Administrator Standby RaQ IP addres
21. RaQ see Rebooting on page 60 The LCD screen displays the scrolling Cobalt logo and then LOADING KERNEL When the LCD screen displays the message BOOTING press and hold down the right arrow Oo button The message BOOTING AS ACTIVE RAQ appears on the screen very briefly followed by LOOKING FOR STANDBY RAQ When this message appears you can release the right arrow 0 button The RaQ boots up as the active RaQ Cobalt StaQware Cluster User Manual Force the server to boot as active RaQ or standby RaQ Force the server to boot as a standby RaQ To force the RaQ to boot as a standby RaQ 1 Reboot the RaQ see Rebooting on page 60 The LCD screen displays the scrolling Cobalt logo and then LOADING KERNEL When the LCD screen displays the message BOOTING press and hold down the left arrow button The message BOOTING AS STANDBY RAQ appears on the screen very briefly followed by LOOKING FOR ACTIVE RAQ When this message appears you can release the left arrow button The RaQ server boots up as the standby RaQ Cobalt StaQware Cluster User Manual 51 Chapter 5 Technical Information Glossary This document uses the following terms 1 2 52 Active RaQ the live RaQ server that is currently providing the services Standby RaQ the RaQ server that is monitoring the active RaQ and is configured to take over if the active RaQ fails StaQware Cluster the active RaQ and th
22. StaQware Cluster The automatic failover and data synchronization features are not available until the cluster is re established Figure 11 Cluster Network screen High Availability Cluster Management Cluster Status A Availability Monitoring Network 1 Configuration 2 Active RaQ Network 1 IP Address 10 9 19 175 Cluster Network 8 Standby RaQ Network 1 IP Address 15 9 19 50 Fallovericontrol Q9 Monitoring Network 1 Subnet Mask 255 255 0 0 l 9 Data Synchronization Network 2 Configuration Active RaQ Network 2 IP Address 172 27 27 1 Q Standby RaQ Network 2 IP Address 172 27 27 2 Q Synchronization Network 2 Subnet Mask 255 255 255 0 Save Changes 38 Cobalt StaQware Cluster User Manual Features on the StaQware Cluster user interface Failover Control screen Figure 12 shows the Failover Control screen Figure 12 Failover Control screen High Availability Cluster Management Failover Now Disband Cluster Cluster Status Q Cluster Network A Failover Control 9 Monitoring Outage Tolerance Ve bcne un Q Temporarily Disable Monitoring for A Save Changes Server Management In the Failover Control table you can set two parameters e monitoring outage tolerance e temporarily disable monitoring Cobalt StaQware Cluster User Manual 39 Chapter 3 Features of the StaQware Cluster software Monitoring Outage Tolerance You can adjust the sensitivity of t
23. TED SUCH FAILURE TO COBALT WITHIN TEN 10 DAYS AFTER SUCH FAILURE ALL REPLACED PRODUCT OR PARTS SHALL BECOME THE PROPERTY OF COBALT THIS WARRANTY DOES NOT EXTEND TO ANY PARTY OBTAINING THE PRODUCTS FROM CUSTOMER COBALT SHALL IN NO EVENT BE LIABLE FOR ANY SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES INCLUDING BUT NOT LIMITED TO LOSS OF PROFITS OR INCOME WHETHER OR NOT COBALT HAD KNOWLEDGE THAT SUCH DAMAGES MIGHT BE INCURRED OR DAMAGES ARISING FROM OR RELATING TO LOSS OF DATA LIABILITY OF COBALT IF ANY SHALL IN NO EVENT EXCEED THE AMOUNT PAID BY CUSTOMER FOR THE DEFECTIVE PRODUCTS OR SERVICES Non Conforming Products Upon discovery of any failure of a Cobalt Product or component thereof to conform to the Warranty during the Warranty Period the Customer will within ten 10 days after such failure contact Cobalt and seek a return material authorization RMA number Each requested RMA number will be issued within three 3 days after Customer request The allegedly defective Cobalt Product or component thereof shall be returned to Cobalt securely and properly packaged freight and insurance prepaid with the RMA number prominently displayed on the exterior of the shipment packaging and with the Product Cobalt will have no obligation to accept any Cobalt Product which is returned without an RMA number and will not accept returns from anyone other than the original Customer Cobalt will use diligent efforts to either repair or rep
24. aQ fails over to become the new active RaQ 3 You can set this tolerance interval the Monitoring Outage Tolerance parameter on the Failover Control screen in the user interface UI For more information see Monitoring Outage Tolerance on page 40 Cobalt StaQware Cluster User Manual 47 Chapter 5 Technical Information If the standby RaQ detects that the Availability Monitoring Network 1 channel is accessible but the Data Synchronization Network 2 channel is inaccessible there is no failover The active RaQ degrades to a non HA state If the standby RaQ detects that the Data Synchronization Network 2 channel and the gateway are accessible but the Availability Monitoring Network 1 channel is inaccessible the standby RaQ tells the active RaQ to shut down The standby RaQ fails over to become the new active RaQ Before using StaQware Cluster software Before using the StaQware Cluster software users should be aware of the following items 1 Before you load the StaQware Cluster software package file pkg ensure that you have installed OS Update 2 0 or later for the RaQ on the active RaQ For more information see System setup on page 18 2 The process of converting a RaQ into a standby RaQ destroys all the data on the standby RaQ Ensure that you back up all data on the RaQ before you convert it into a standby RaQ The StaQware Cluster software does not affect the data on the active RaQ 3 The two RaQ s
25. active RaQ Configuration Wizard Standby RaQ Acquisition Availability Monitoring Network 1 Configuration Data Synchronization Network 2 Configuration 3 Features of the StaQware Cluster software Access to the StaQware Cluster user interface Features on the StaQware Cluster user interface Cluster Status screen Cluster Network screen Failover Control screen Monitoring Outage Tolerance Temporarily Disable Monitoring Failover Now Disband Cluster Configuration of a replacement standby RaQ 4 Failover Scenarios Effects on assigned IP addresses Effects on services Possible failure scenarios vi Cobalt StaQware Cluster User Manual 13 13 13 14 14 16 18 18 18 18 19 19 20 21 23 25 28 28 29 35 35 36 37 38 39 40 40 41 42 42 43 43 43 44 Contents 5 Technical Information 47 Failure detection 47 Before using StaQware Cluster software 48 StaQware Cluster monitoring daemon at bootup 49 Force the server to boot as active RaQ or standby RaQ 50 Force the server to boot as an active RaQ 50 Force the server to boot as a standby RaQ 51 Glossary 52 A Usingthe LCD Console 53 LCD console 53 LCD display and messages 54 LCD commands 55 Active RaQ 55 Changing network configuration 56 Configuring an uninterruptible power supply UPS 57 Rebooting 60 Powering down 61 Standby RaQ 62 Forcing a failover 62 B Warranty and Licenses 63 Cobalt Networks Inc Limited Warranty 63 Cobalt Networks Inc License Agre
26. all of the terms of this Agreement You may not transfer or assign your rights to use the Software without the prior written consent of Cobalt Networks Any attempted assignment without such consent shall be void You may not export the Software Hardware and related materials in violation of the export control laws of the United States of America and other countries Upon any violation of any of the provisions of this Agreement your rights to use the Software and related Hardware shall automatically terminate and you shall be obligated to return to Cobalt Networks or to destroy the Software and to return to Cobalt Networks the Hardware Cobalt StaQware Cluster User Manual 65 Appendix B Warranty and Licenses This Agreement shall be governed by California law other than its provisions concerning the applicability of laws of other jurisdictions You acknowledge that the export of the Software is governed by the export control laws of the United States of America and other countries You agree to comply with all such export control laws If you are an agency and or instrumentality of the United States of America the Government all Software and the related documentation is provided subject to the restrictions applicable to other end users in accordance with the terms of this Agreement and as provided in DFARS 227 7202 1 a and 227 7202 3 a 1995 DFARS 252 227 7013 c 1 ii Oct 1988 FAR 12 212 a 1995 FAR 52 227 19 or FAR 52
27. ation Step 3 of 3 2 Standby RaQ IP Address 10 9 19 50 o Standby RaQ Administrator Password eee o Standby RaQ Administrator Password again eee Q Availability Monitoring Network 1 Configuration 9 Active RaQ Network 1 IP Address 10 9 19 178 Q Standby RaQ Network 1 IP Address 10 9 19 50 Q Monitoring Network 1 Subnet Mask 255 255 0 0 9 Data Synchronization Network 2 Configuration 9 Active RaQ Network 2 IP Address 172 27 27 1 9 Standby RaQ Network 2 IP Address 172 27 27 2 2 Synchronization Network 2 Subnet Mask 255 255 255 0 Enable Cluster Cobalt StaQware Cluster User Manual 31 Chapter 2 Setting Up the Cluster The StaQware Cluster software saves the configuration information this may take a few minutes The cursor changes to a spinning watch Once completed a message is displayed stating that the configuration settings were saved successfully See Figure 8 The active RaQ then goes through the process of acquiring the standby RaQ The acquisition of the standby RaQ takes about five minutes Figure 8 Configuration information saved successfully High Availability Cluster Management Papa A 9 Availability Monitoring Network 1 Configuration Q Active RaQ Network 1 IP Address 10 9 19 175 Cluster Network 9 Standby RaQ Network 1 IP Address 10 9 19 50 Failover Control 9 Monitoring Network 1 Subnet Mask 255 2550 0 i 9 Data Synchronization Network 2 Configuration m 9 Active RaQ
28. ave The master communicates directly to the UPS through the serial port The slave or slaves communicates with the master not a RaQ server over the network to verify the status of the power supply Note The RaQ server cannot act as a master for other machines Allowing slave access by arbitrary machines would pose a security risk The distinction between master and slave is whether the RaQ is connected directly to the UPS a master or pointed to another machine that is directly connected to the UPS a slave If you configure the RaQ as a slave you must have on the network a machine acting as a UPS master that is configured to allow slave access for the IP address of your RaQ If you configure a RaQ as a master the RaQ configures itself automatically Before choosing this option you must first connect the UPS to the RaQ through the serial port see Figure 14 for the correct serial port If you configure a RaQ as a slave the LCD screen prompts you for the IP address of the device that is configured as the master Figure 14 Serial port for UPS connection t Serial port for UPS connection Cobalt StaQware Cluster User Manual 57 Appendix A Using the LCD Console To configure the RaQ for the UPS first connect the UPS unit and the RaQ and then configure the RaQ through the LCD panel Refer to the UPS manual for more information on connecting the
29. be them to a member of the Technical Support team Refer to the user manual and to the Web based resources such as Cobalt s Knowledge Base the online technical papers and the Solutions page as described above To speed up your support call When contacting Cobalt Networks Technical Support the more information you can provide the better Before you call or email have the following information ready the serial number located on the back panel or the MAC address of the primary network interface accessible through the user interface of your RaQ server e any additional software installed on your system e any peripherals connected to your system e any error messages you have received and the time when they occurred e the process you were running or the changes you had made when the error occurred e the steps you have taken to resolve the problem Support tools feature The Support Tools feature is a Web page that assists Technical Support in diagnosing problems on a RaQ server On the Server Diagnostics screen the RaQ Administrator can create and download a data dump of the configuration files on the RaQ This data dump can then be emailed to diagnostics cobalt com A member of the Technical Support team can evaluate the condition of your RaQ before providing you with corrective action either by telephone or email 10 Cobalt StaQware Cluster User Manual Cobalt logo badge If the RaQ Administrator is familiar with Li
30. booted a hypertext link appears on the Install Software screen Figure 3 shows a sample shot of the Install Software screen with the StaQware Cluster loaded This link takes you to the High Availability Cluster Status screen that is protected by the standard RaQ Administrator password The RaQ Administrator configures the StaQware Cluster through the browser based UI Cobalt StaQware Cluster User Manual 21 Chapter 2 Setting Up the Cluster Figure 3 Sample of the Install Software screen Server Management Backup Restore Install Software Storage Reboot Shutdown Site Management Install Software 6 URL Administrator Software m Or o upa Control Panel Loaded No loaded packages Maintenance 2 Site Usage System Status Software on the Cobalt Server Cobalt OS Release 5 0 RaQ3 SecurityRelease 1 1 RaQ3E Update OS Release 2 0 Cobalt Networks High Availability Server Release 131 Active Monitor 22 Cobalt StaQware Cluster User Manual UI based setup on the active RaQ Ul based setup on the active RaQ AN N Caution The process of converting a RaQ into a standby RaQ destroys all the data on the RaQ Ensure that you back up all data on the RaQ before you convert it into a standby RaQ Caution Do not interrupt the process of synchronizing a standby RaQ this process approximately 1 5 hours depending on the size of the hard disk drive Interrupting the synchronization proc
31. cheduled backups of the RaQ through the Network 2 interface the IP address assigned to the Network 2 interface for data synchronization in the StaQware Cluster Configuration Wizard must be different from the IP address assigned to the Network 2 interface for the backup function in the Server Management gt Maintenance gt Backup screen Also in this case use the wiring solution as displayed in Figure 2 StaQware Cluster monitoring daemon at bootup 1 The active RaQ and the standby RaQ know who they are on the network even though the content of their disks is identical On bootup the active RaQ searches for its standby RaQ on the network and the standby RaQ searches for its active RaQ If one of the two servers sees an active RaQ it knows to become a standby RaQ If a standby RaQ is not found within five minutes the active RaQ goes into a degraded state meaning that the StaQware Cluster services are not available However the active RaQ still services requests If an active RaQ is not found within five minutes the standby RaQ fails over and attempts to become the active RaQ Cobalt StaQware Cluster User Manual 49 Chapter 5 Technical Information Force the server to boot as active RaQ or standby RaQ During the boot process you can force the RaQ to boot as either the active RaQ or the standby RaQ Force the server to boot as an active RaQ To force the RaQ to boot as an active RaQ 1 50 Reboot the
32. conds This action causes the LCD screen to enter its function mode Press the S button until the function you want appears on the LCD screen To cancel the LCD function mode select the EXIT function when it appears on the screen Press the enter button and select YES Cobalt StaQware Cluster User Manual 55 Appendix A Using the LCD Console Changing network configuration To reset the IP address or change the network configuration of the Network 1 interface 1 4 3 6 7 8 9 10 On the LCD console hold down the S button for approximately 2 seconds The LCD screen displays SELECT SETUP NETWORK Press the button Enter the IP address using the arrow buttons The left and right arrow buttons move the cursor position to the left or right The up and down arrow buttons increase or decrease the digit at the cursor position Press the button Enter the Netmask using the arrow buttons Press the button Enter the Gateway using the arrow buttons Press the button Use the arrow buttons to toggle the cursor between S ave and C ancel Press the button If you select the Save option the RaQ reboots using the new network configuration If you select Cancel you return to Step 1 of this procedure 56 Cobalt StaQware Cluster User Manual LCD commands Configuring an uninterruptible power supply UPS The are two options for configuring the RaQ for a UPS as the master or as a sl
33. configuration files can be corrupted if the failover occurs while restoring the files 5 Domain Name System service You receive an Unresolved host lookup error during the time that the failure has occurred Web related updates that have not been completed must be re entered 6 Frontpage Any transactions that have not been completed are not performed The user must perform those transactions again Possible failure scenarios Table 4 describes some of the possible failover scenarios and the results of those failovers These scenarios assume that only the network interfaces are down and that the systems are still operational Note The term HA state means that the StaQware Cluster software p is functioning normally on the cluster The automatic failover and the data synchronization features are available The term non HA state means that the automatic failover feature is not available and the data synchronization feature may or may not be available depending on the source of failure The StaQware Cluster software reacts to the first error condition that it encounters It does not provide StaQware Cluster services in the presence of multiple sources of failure For example if the standby RaQ is unable to contact both the active RaQ and the local gateway it does not fail over the cluster drops into non HA state Similarly if the standby RaQ experiences a power outage or disk failure during a failover services will be int
34. ddress CANNOT be used by any virtual sites on Standby RaQ Monitoring IP address This field is automatically filled in with the IP address entered in Step 1 but you can change this value if you want This IP address is assigned to the Network 1 interface on the standby RaQ through which the standby RaQ monitors the Network 1 interface on the active RaQ See E in Figure 6 Monitoring Network Subnet Mask The IP addresses used for monitoring the availability of the other RaQ and the gateway IP address must all share the same subnet mask See F in Figure 6 Data Synchronization Network 2 Configuration The active RaQ and the standby RaQ synchronize their data using the Network 2 interface The IP address assigned to the function of data synchronization is paired to the MAC address of the server In case of a failover these IP addresses do NOT migrate to the new active RaQ For example let us say that the IP address assigned on the active RaQ to the function of data synchronization is 172 27 27 1 and that on the standby RaQ is 172 27 27 2 If a failover occurs the configuration settings on the Cluster Network screen now show that the active RaQ Synchronization IP Address is now 172 27 27 2 and that on the standby RaQ is now 172 27 27 1 Cobalt StaQware Cluster User Manual 29 Chapter 2 Setting Up the Cluster The Configuration Wizard automatically enters default private IP addresses 172 27 27 x in these fields You can cha
35. devices 1 2 3 4 10 11 58 Plug the UPS into the wall socket Turn on the UPS Plug the RaQ server s into the UPS power sockets Connect the UPS serial cable to the UPS unit and the serial port on the RaQ that will serve as the master See Figure 14 3 Important You must use the serial cable shipped with the UPS unit On the LCD console hold down the S button for approximately 2 seconds The LCD screen displays SELECT SETUP NETWORK Press the S button until Configure UPS appears in the LCD screen SELECT CONFIGURE UPS Press the button Use the arrow buttons to toggle the cursor between On and Off Select On Press the button Use the arrow buttons to toggle the cursor between M aster and S lave Press the button If you choose M aster the RaQ configures itself automatically for the UPS Cobalt StaQware Cluster User Manual 12 13 LCD commands If you choose S lave the LCD screen prompts you for the IP address of the device configured as the master Enter the IP address using the arrow buttons The left and right arrow buttons move the cursor position to the left or right The up and down arrow buttons increase or decrease the digit at the cursor position Press the button The LCD screen returns to the host name and IP address The LCD screen does NOT prompt you to save the changes Verifying the UPS configuration To verify that you have c
36. distribution limitation excluding those countries so that distribution is permitted only in or among countries not thus excluded In such case this License incorporates the limitation as if written in the body of this License 9 The Free Software Foundation may publish revised and or new versions of the General Public License from time to time Such new versions will be similar in spirit to the present version but may differ in detail to address new problems or concerns Each version is given a distinguishing version number If the Program specifies a version number of this License which applies to it and any later version you have the option of following the terms and conditions either of that version or of any later version published by the Free Software Foundation If the Program does not specify a version number of this License you may choose any version ever published by the Free Software Foundation 10 If you wish to incorporate parts of the Program into other free programs whose distribution conditions are different write to the author to ask for permission For software which is copyrighted by the Free Software Foundation write to the Free Software Foundation we sometimes make exceptions for this Our decision will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software generally 72 Cobalt StaQware Cluster User Manual GNU General
37. e devices or additional internal hard disk drives cannot be used in conjunction with the StaQware Cluster software If necessary a link to the Maintenance screen of the Server Management section is provided so that the RaQ Administrator can disable an external storage device To restore a standby RaQ to the normal RaQ server functionality you need to rebuild the standby RaQ with an OS Restore CD An OS Restore CD is included with the purchase of the StaQware Cluster software Note Rebuilding the RaQ server with the OS Restore CD is a destructive process All data is lost on the rebuilt RaQ Do not interrupt the process of synchronizing the standby RaQ The process of synchronizing a standby RaQ takes approximately 1 5 hours depending on the size of the hard disk drive Interrupting the acquisition process can leave the standby RaQ in an unbootable condition for which you will need to use the OS Restore CD to rebuild the RaQ The StaQware Cluster software uses the Network 2 interface to synchronize the data from the active RaQ to the standby RaQ If you perform scheduled backups of the RaQ through the Network 2 interface the IP address assigned to the Network 2 interface for data synchronization in the StaQware Cluster Configuration Wizard must be different from the IP address assigned to the Network 2 interface for the backup function in the Server Management gt Maintenance gt Backup screen Also in this case use the wiri
38. e standby RaQ taken as a unit Crossover cable a cable in which the transmission pair on one end of the cable connects to the receive pair on the other end and vice versa A crossover cable allows you to connect two like devices without using a hub HA state High Availability state The StaQware Cluster software is functioning normally on the cluster The automatic failover and the data synchronization features are available Non HA state non High Availability state The automatic failover feature is not available the data synchronization feature may or may not be available depending on the point of failure Address Resolution Protocol ARP a protocol used by the Internet Protocol IP network layer protocol to map IP network addresses to the hardware addresses used by a data link protocol The ARP protocol is used when IP is used over ethernet The hardware address is also known as the Media Access Control MAC address in reference to the standards which define ethernet Cobalt StaQware Cluster User Manual Appendix A Using the LCD Console LCD console When setting up the RaQ you use the LCD console to enter network configuration information for the RaQ During startup the LCD screen on the front panel of the RaQ displays status information about the boot process itself Figure 13 shows the LCD console for the RaQ The LCD screen on the front of the RaQ displays two lines of text The top line of the LCD presen
39. ement 65 The BSD Copyright 67 GNU General Public License 68 Worksheet 75 Cobalt StaQware Cluster User Manual vii Contents viii Cobalt StaQware Cluster User Manual Chapter 1 Introduction The Cobalt StaQware High Availability Cluster Software for RaQ servers is a software package that provides a high availability failover solution and real time data replication for a pair of Cobalt RaQ servers The software enables a RaQ that is providing services for example Web email file transfer protocol FTP and Domain Name System DNS service to fail over to a second RaQ in the event that the first RaQ is detected as being offline Cobalt s StaQware Cluster solution implemented on a pair of identical RaQ servers is designed to protect customers against hardware failure There is an active RaQ and a standby RaQ in the pair The active RaQ is the live machine that services incoming requests the standby RaQ monitors the active RaQ and is prepared to take over all services for the active RaQ in the event of failure Through the primary network interface both RaQ servers monitor the health of their pair partner and verify connectivity to the Internet by accessing the gateway Data synchronization and peer to peer communication take place over a second ethernet channel The two RaQ servers must have the same SKU number because the hard drives in the two RaQ servers must be the same size This product works only with the followin
40. er User Manual Chapter 5 Technical Information This chapter provides technical descriptions of the services provided by the StaQware Cluster software The term HA state means that the StaQware Cluster software is functioning normally on the cluster The automatic failover and the data synchronization features are available The term non HA state means that the automatic failover feature is not available and the data synchronization feature may or may not be available depending on the source of failure The StaQware Cluster software uses the gateway to determine whether the Network 1 interface is inaccessible For example The standby RaQ contacts the gateway to determine whether the Network 1 interface of the standby RaQ is down case 1 or the Network 1 interface of the active RaQ is down case 2 Based on this information the standby RaQ does not fail over case 1 or it does fail over case 2 Failure detection The StaQware Cluster software detects a failure in the following manner 1 The standby RaQ sends an Internet Control Message Protocol ICMP echo a ping to the active RaQ every five seconds on the Availability Monitoring Network 1 interface The active RaQ responds to the pings from the standby RaQ 2 Ifthe active RaQ does not respond to the standby RaQ within a specified tolerance interval the standby RaQ tells the active RaQ to shut down The active RaQ shuts down properly and the standby R
41. erred form of the work for making modifications to it For an executable work complete source code means all the source code for all modules it contains plus any associated interface definition files plus the scripts used to control compilation and installation of the executable However as a special exception the source code distributed need not include anything that is normally distributed in either source or binary form with the major components compiler kernel and so on of the operating system on which the executable runs unless that component itself accompanies the executable If distribution of executable or object code is made by offering access to copy from a designated place then offering equivalent access to copy the source code from the same place counts as distribution of the source code even though third parties are not compelled to copy the source along with the object code 4 You may not copy modify sublicense or distribute the Program except as expressly provided under this License Any attempt otherwise to copy modify sublicense or distribute the Program is void and will automatically terminate your rights under this License However parties who have received copies or rights from you under this License will not have their licenses terminated so long as such parties remain in full compliance 70 Cobalt StaQware Cluster User Manual GNU General Public License 5 You are not required to accept this License
42. errupted 44 Cobalt StaQware Cluster User Manual Possible failure scenarios In each failure scenario the active RaQ sends an email notification to the RaQ Administrator Table 4 Possible failure scenarios Condition Result The Availability Monitoring channel Network 1 of the active RaQ is inaccessible The standby RaQ shuts down the active RaQ There is a clean failover The Data Synchronization channel Network 2 of the active RaQ is inaccessible The active RaQ reports the standby RaQ as inaccessible The StaQware Cluster goes into non HA state Data synchronization takes place when the active RaQ recovers The Availability Monitoring channel Network 1 of the standby RaQ is inaccessible The standby RaQ still synchronizes with the active RaQ over the Data Synchronization channel The StaQware Cluster goes into non HA state The standby RaQ can recover when the connection is re established The Data Synchronization channel Network 2 of the standby RaQ is inaccessible The active RaQ reports the standby RaQ as inaccessible The StaQware Cluster goes into non HA state Data synchronization takes place when the active RaQ recovers The local gateway is inaccessible Because the standby RaQ cannot see the gateway it does not have aconnection to the outside world thus there is no reason for the standby RaQ to fail over because it cannot receive service requests The
43. ervers must have the same SKU number because the hard drives in the two RaQ servers must be the same size Verify the SKU number on the rear label of each server 4 The StaQware Cluster software mirrors only the first internal IDE hard disk drive to the standby RaQ External storage devices or additional internal hard disk drives cannot be used in conjunction with the StaQware Cluster software If necessary a link to the Maintenance screen of the Server Management section is provided so that the RaQ Administrator can disable an external storage device 5 To restore a standby RaQ to the normal RaQ server functionality you need to rebuild the standby RaQ with an OS Restore CD An OS Restore CD is included with the purchase of the StaQware Cluster software Note Rebuilding the RaQ server with the OS Restore CD is a f destructive process All data is lost on the rebuilt RaQ 48 Cobalt StaQware Cluster User Manual StaQware Cluster monitoring daemon at bootup Do not interrupt the process of synchronizing the standby RaQ The process of synchronizing a standby RaQ takes approxmately 1 5 hours depending on the size of the hard disk drive Interrupting the synchronization process can leave the standby RaQ in an unbootable condition for which you will need to use the OS Restore CD to rebuild the RaQ The StaQware Cluster software uses the Network 2 interface to synchronize the data from the active RaQ to the standby RaQ If you perform s
44. es are normally enabled by default Cobalt StaQware Cluster User Manual iii Important Safeguards iv Cobalt StaQware Cluster User Manual Contents Contents Important Safeguards 1 Introduction Features Automatic failover Failover time Real time data replication Overview of setting up a StaQware Cluster General information Requirements Target audience for the StaQware Cluster Software List of chapters and appendices Customer Service and Technical Support General Cobalt information Cobalt Technical Support and Service Email contact Technical Support telephone numbers Further resources and information Solutions Cobalt Developer Network Discussion Groups O OO OO 0 0 OO OO NANI 1 1 10 OQ tnt 0 tQ F2 NH e The Knowledge Base Online technical papers Education Before contacting Cobalt Networks Technical Support 10 To speed up your support call 10 Support tools feature 10 Cobalt logo badge 11 Active Assist 11 Cobalt StaQware Cluster User Manual y Contents 2 Setting Up the Cluster Setting up the active RaQ Setting up the standby RaQ Connecting the two RaQ servers Connecting with a crossover ethernet cable Connecting through an additional hub or switch System setup Verifying OS Update 2 0 on the active RaQ Downloading OS Update 2 0 Download the file from the CD ROM Download from the Web site Download from the FTP site Installing OS Update 2 0 Installing the StaQware Cluster software UI based setup on the
45. ess can leave the standby RaQ in an unbootable condition for which you will need to use the OS Restore CD to rebuild the RaQ Through the browser based user interface UI the RaQ Administrator can now configure the active RaQ with a standby RaQ The last page of this user manual is a Worksheet that you can tear out and use to keep track of the IP addresses necessary for the StaQware Cluster software to run on your RaQ servers 2 2 Note Two dedicated IP addresses are reguired for the Availability Monitoring function one for the active RaQ and one for the standby RaQ This IP address cannot be used by any virtual sites on the RaQ server Note Two private IP addresses are reguired for the Data Synchronization function one for the active RaQ and one for the standby RaQ Cobalt StaQware Cluster User Manual 23 Chapter 2 Setting Up the Cluster To access the Configuration Wizard for the StaQware Cluster 1 2 7 Launch your browser software Type in the URL for the RaQ Admin Server http lt IP address gt admin In the confirmation dialog enter the user name and password for the RaQ Administrator The Server Management screen of the active RaQ appears through System setup on page 18 your user name and password have been cached and you will not receive a prompt to enter them Z Note If you have not closed your browser session since going On the Server Management screen click Maintenance on the left
46. g Cobalt servers e RaQ 3i e RaQ 4i Features The StaQware Cluster offers e automatic failover between a pair of RaQ servers e real time data replication e reduced downtime of services e maintenance through planned failovers and service intervals Cobalt StaQware Cluster User Manual I Chapter 1 Introduction Automatic failover The active RaQ and the standby RaQ constantly monitor each other through both the Network 1 and Network 2 interfaces 1 Ifthe standby RaQ detects that the active RaQ is inaccessible the standby RaQ tells the active RaQ to shut down The standby RaQ attempts to become the new active RaQ The new active RaQ sends an email to the RaQ Administrator stating that a failover occurred 2 Ifthe active RaQ detects that the standby RaQ is inaccessible the active RaQ sends an email to the RaQ Administrator stating that the standby RaQ is inaccessible The active RaQ drops into non High Availability state non HA state but it still services requests Note The term HA state means that the StaQware Cluster software EA is functioning normally on the cluster The automatic failover and the data synchronization features are available The term non HA state means that the automatic failover feature is not available and the data synchronization feature may or may not be available depending on the source of failure Whenever the active RaQ drops into non HA state the standby RaQ has to perform a full data synchr
47. he Cobalt Server table To access the StaQware Cluster UI through this link 1 On the Server Management screen of the active RaQ click Maintenance on the left The File Backup table appears Click Install Software at the top The Install Software and Software on the Cobalt Server tables appear In the Software on the Cobalt Server table click the hypertext link for Cobalt StaQware Cluster The Cluster Status screen appears this screen is protected by the standard RaQ Administrator password Enter the admin user name and password in the dialog box Features on the StaQware Cluster user interface The StaQware Cluster UI presents the standard Cobalt screen layout with the options displayed on the left The options are as follows 1 2r 36 Cluster Status displays the current status of the StaQware Cluster Cluster Network allows the RaQ Administrator to view and adjust the network parameters for the StaQware Cluster Failover Control controls the forced and scheduled failovers and allows the RaQ Administrator to disband the StaQware Cluster Server Management links back to the Server Management screen of the active RaQ Cobalt StaQware Cluster User Manual Features on the StaQware Cluster user interface Cluster Status screen When you first enter the StaQware Cluster the Cluster Status screen appears The Cluster Status screen displays a colored circle to indicate the status of the StaQware Cluster Table 2
48. he Network 2 interfaces are connected indirectly through an additional switch or hub Figure 2 Cobalt recommends that you use the crossover cable method Connecting with a crossover ethernet cable To connect the RaQ servers with a crossover ethernet cable 1 With a Category 5 ethernet cable connect the Network 1 interface on the active RaQ to an ethernet hub or switch See A in Figure 1 2 With a Category 5 ethernet cable connect the Network 1 interface on the standby RaQ to a different ethernet hub or switch See B in Figure 1 3 With a crossover ethernet cable connect the Network 2 interfaces on the active RaQ and standby RaQ directly to each other See C in Figure 1 Figure 1 shows the wiring configuration the Network 2 interfaces connected directly by means of a crossover cable 14 Cobalt StaQware Cluster User Manual Connecting the two RaQ servers Figure 1 Connecting the RaQ servers with a crossover ethernet cable Active RaQ CrossoverO ethernet cable Data synchronization channel Hub or switch Hub or switch Local Gateway Data synchronization channel Monitoring channel mmm Category 5 ethernet cable Note The back plane of the RaQ server has been simplified for this diagram Standby RaQ oj Cobalt StaQware Cluster User Manual 15 Chapter 2 Setting Up the Cluster Connecting through an additional hub or swi
49. he Program by all those who receive copies directly or indirectly through you then the only way you could satisfy both it and this License would be to refrain entirely from distribution of the Program If any portion of this section is held invalid or unenforceable under any particular circumstance the balance of the section is intended to apply and the section as a whole is intended to apply in other circumstances It is not the purpose of this section to induce you to infringe any patents or other property right claims or to contest validity of any such claims this section has the sole purpose of protecting the integrity of the free software distribution system which is implemented by public license practices Many people have made generous contributions to the wide range of software distributed through that system in reliance on consistent application of that system it is up to the author donor to decide if he or she is willing to distribute software through any other system and a licensee cannot impose that choice This section is intended to make thoroughly clear what is believed to be a consequence of the rest of this License Cobalt StaQware Cluster User Manual 71 Appendix B Warranty and Licenses 8 If the distribution and or use of the Program is restricted in certain countries either by patents or by copyrighted interfaces the original copyright holder who places the Program under this License may add an explicit geographical
50. he automatic failover meaning how quickly the failover process begins to tolerate a short disconnection from the network For RaQ servers that undergo severe loads select a longer time period The three options are 5 seconds 90 seconds and 5 minutes Click Save Changes If you want to install a software pkg file that requires the RaQ to reboot after installation set the Monitoring Outage Tolerance parameter to the maximum amount of time before you install the software Once the RaQ has rebooted reset this parameter to the desired level of sensitivity Temporarily Disable Monitoring You can disable the automatic failover feature for a specific interval If you plan to disconnect the active RaQ from the network or to interrupt service for example perform maintenance on the standby RaQ disable the automatic failover feature The interval options are 15 minutes 1 hour 2 hours 4 hours and 1 day Click Save Changes When you temporarily disable the monitoring function the Cluster Status screen shows a yellow circle indicating that automatic failover is unavailable The Cluster Status screen also reports the time remaining in the service interval Note When you temporarily disable the monitoring feature an email notification is not sent to the RaQ Administrator If you want to install a software pkg file on the active RaQ do not use the Temporarily Disable Monitoring feature Instead set the Monitoring Outage Tolerance
51. he terms of this License c Ifthe modified program normally reads commands interactively when run you must cause it when started running for such interactive use in the most ordinary way to print or display an announcement including an appropriate copyright notice and a notice that there is no warranty or else saying that you provide a warranty and that users may redistribute the program under these conditions and telling the user how to view a copy of this License Exception if the Program itself is interactive but does not normally print such an announcement your work based on the Program is not required to print an announcement These requirements apply to the modified work as a whole If identifiable sections of that work are not derived from the Program and can be reasonably considered independent and separate works in themselves then this License and its terms do not apply to those sections when you distribute them as separate works But when you distribute the same sections as part of a whole which is a work based on the Program the distribution of the whole must be on the terms of this License whose permissions for other licensees extend to the entire whole and thus to each and every part regardless of who wrote it Thus it is not the intent of this section to claim rights or contest your rights to work written entirely by you rather the intent is to exercise the right to control the distribution of derivative or collec
52. her to ensure reliable Internet application and data delivery All software changes made to the active RaQ will instantly be mirrored on to standby RaQ If the active RaQ fails at any time the standby RaQ will assume all services from the active RaQ and notification will be sent to the Administrator that a failover has occured The Administrator may use the Failover Control menu to trigger a failover to facilitate hardware upgrades without incurring downtime WARNING All data on the standby RaQ will be overwritten Next Configure failover services 20 Cobalt StaQware Cluster User Manual UI based setup on the active RaQ 3 Screen 2 shows the recommended wiring connections between the two RaQ servers Refer back to Figure 1 and Figure 2 Note Only the first internal IDE disk is mirrored to the standby RaQ by the StaQware Cluster software External storage devices or additional internal hard disk drives cannot be used in conjunction with the StaQware Cluster software If necessary a link to the Maintenance screen of the Server Management section is provided so that the user can disable an external storage device 4 Ifyou want to return to Screen 1 click Back at the bottom of the screen Click Next at the bottom of the screen to proceed to Screen 3 5 Screen 3 asks the user for several network settings see Figure 6 Figure 6 Configuration Wizard Screen 3 High Availability Cluster Management
53. lace in accordance with the terms of the Warranty within ten 10 days any Cobalt Product or part found to be non complying with the Warranty but in no event shall Cobalt s failure to repair or replace within ten 10 days give rise to a claim or cause of action to any party Upon completion Cobalt will return such repaired or replacement Product or part to the Customer freight and insurance prepaid In the event that Cobalt in its sole discretion determines that it is unable to replace or repair the Cobalt Product or part Cobalt will refund to the original Customer the F O B price paid by such Customer for the defective Cobalt Product Information contained in this document is subject to change without notice 2000 2001 Cobalt Networks Inc All rights reserved 64 Cobalt StaQware Cluster User Manual Cobalt Networks Inc License Agreement Cobalt Networks Inc License Agreement BY POWERING ON THIS PRODUCT YOU THE ENTITY TO WHICH THE ENCLOSED SOFTWARE PROGRAMS ARE SUPPLIED ARE AGREEING TO BE BOUND BY ALL OF THE TERMS OF THE LICENSE AGREEMENT AND THE LIMITED WARRANTY SET FORTH BELOW IF YOU DO NOT AGREE TO BE SO BOUND PROMPTLY RETURN THE FULL PRODUCT AND ALL ACCOMPANYING MATERIALS TO THE ENTITY FROM WHICH IT WAS PURCHASED This License Agreement this Agreement grants you a non exclusive non transferable license to use the software collectively the Software supplied to you by Cobalt Networks Inc
54. ng solution as displayed in Figure 2 Cobalt StaQware Cluster User Manual Requirements Requirements To use the StaQware Cluster software you need the following A pair of RaQ servers each with dual ethernet interfaces the RaQ servers must have the same SKU number the hard drives must be the same size Verify the SKU number on the rear label on the RaQ servers Two dedicated IP addresses for the Availability Monitoring function one for the active RaQ and one for the standby RaQ The dedicated IP address on the active RaQ cannot be used by any virtual sites on the RaQ Two private IP addresses for the Data Synchronization function one for the active RaQ and one for the standby RaQ A 10BaseT 10 100BaseTX or 100BaseTX Transmission Control Protocol Internet Protocol TCP IP based local area network LAN Z Note A 10BaseT connection is not recommended for the Data Synchronization Network 2 interface Cobalt recommends using a crossover ethernet cable for connecting the Data Synchronization interfaces Apersonal computer attached to the network that uses a Web browser for example Netscape Navigator version 4 7 or later or Microsoft Internet Explorer version 5 0 or later To manage the RaQ from the user interface UI you must enable cookies cascading style sheets and Javascript on your browser these features are normally enabled by default Network parameters which you can obtain from your network admi
55. nge these private IP addresses if necessary Consult your Network Administrator Note If you are using an ethernet crossover cable to connect the p Network 2 interfaces on the active RaQ and standby RaQ use the default values in the Data Synchronization IP address fields If you are connecting the Network 2 interfaces through a hub or switch consult your Network Administrator for a pair of private IP addresses to enter here 6 Active RaQ Synchronization IP address Use the default value or enter a private IP address for the Network 2 interface of the active RaQ See G in Figure 6 7 Standby RaQ Synchronization IP address Use the default value or enter a private IP address for the Network 2 interface of the standby RaQ See H in Figure 6 8 Synchronization Network Subnet Mask The IP addresses used for synchronizing the data between the RaQ servers must share the same subnet mask See I in Figure 6 9 Ifyou want to return to Screen 2 click Back at the bottom of the screen Click Enable Cluster at the bottom of the screen to complete the configuration and set up the StaQware Cluster Figure 7 shows a sample of a completed Configuration Wizard 30 Cobalt StaQware Cluster User Manual UI based setup on the active RaQ Figure 7 Sample of a completed Configuration Wizard x Cluster Status Cluster Network Failover Control Server Management High Availability Cluster Management 9 Standby RaQ Assimil
56. nistrator these include the two IP addresses assigned to the RaQ servers the subnet mask of your network and a gateway or router address Z Note The last page of this user manual is a worksheet that you can tear out and use to keep track of the IP addresses necessary for the StaQware Cluster software to run on your RaQ servers Cobalt StaQware Cluster User Manual 5 Chapter 1 Introduction Target audience for the StaQware Cluster Software The user manual is for RaQ Administrators who use the StaQware Cluster software to ensure automatic server failover and real time data replication on a pair of RaQ servers The RaQ Administrator should be familiar with Microsoft Windows Macintosh or other operating systems and Netscape Navigator Microsoft Internet Explorer or other Web browsers List of chapters and appendices The manual has the following chapters and appendices Chapter 1 Introduction summarizes the StaQware Cluster software Chapter 2 Setting Up the Cluster explains how to set up the RaQ servers in a StaQware Cluster Chapter 3 Features of the StaQware Cluster software discusses the features of the StaQware Cluster software Chapter 4 Failover Scenarios discusses failover scenarios and the effects of a failover on services Chapter 5 Technical Information explains how the automatic failover feature works and provides a glossary Appendix A Using the LCD Console
57. nstalled OS Update 2 0 on the active RaQ you need to do so before installing the StaQware Cluster software Downloading OS Update 2 0 OS Update 2 0 is included on the StaQware Cluster CD ROM You can also download OS Update 2 0 from either Cobalt Networks Web site or by file transfer protocol FTP site Download the file from the CD ROM To download OS Update 2 0 from the StaQware Cluster CD ROM 1 Insert the CD ROM into your personal computer 2 Open the CD ROM In the RaQ 3 folder you will see the StaQware Cluster software package and the OS Update 2 0 file 3 Copy the OS Update 2 0 file to your personal computer 18 Cobalt StaQware Cluster User Manual System setup Download from the Web site To download OS Update 2 0 from Cobalt Networks Web site 1 From your Web browser go to http www cobalt com support download The Software Downloads screen appears 2 On the right is a pull down menu to select a Cobalt product Click on the menu and select Cobalt RaQ 3 English The Cobalt RaQ 3 English Downloads screen appears 3 Locate the Cobalt RaQ 3 Update 2 0 entry on the screen 4 Click on the hypertext link to download the package to your personal computer Download from the FTP site To download OS Update 2 0 from Cobalt Networks FTP site 1 Point your FTP client using an anonymous login to ftp cobalt com 2 Navigate through the following folders a pub b packages c raq3 d
58. nux he or she can look through this file in an effort to determine the problem with the RaQ The file is a standard gzip file For more information on the Support Tools feature refer to Chapter 3 of the RaQ user manual Cobalt logo badge For more information on the RaQ server click on the Cobalt Networks logo badge in the top left corner e the amount of RAM e the size of the hard disk drive e the version of the Cobalt OS e Cobalt Networks trademark information The table also contains four hypertext links About The Product displays the services available on the RaQ server links to Cobalt Networks Technical Support and a link to the Solutions guide e Cobalt Networks Inc Web site takes you to the URL http www cobalt com e Credits and Acknowledgements acknowledges the software used on the RaQ Diagnostic Information contains a form used generate and download a diagnostics file which can assist Cobalt Technical Support in diagnosing problems with a RaQ server Active Assist For help with a particular field on a screen move the pointer over the Active Assist icon adjacent to that field Help text appears in a window at the bottom of the screen Cobalt StaQware Cluster User Manual 11 Chapter 1 Introduction 12 Cobalt StaQware Cluster User Manual Chapter 2 Setting Up the Cluster This chapter explains how to connect the two RaQ servers and how to install the StaQware Cluster software pkg file
59. onfigured the UPS correctly 1 Unplug the UPS unit from the wall socket to simulate a power outage to the UPS The UPS takes over the power supply to the RaQ servers Each of the RaQ servers monitoring the UPS displays on the LCD screen UPS ON BATTERY Plug the UPS into the wall socket again Each of the RaQ servers monitoring the UPS displays on the LCD screen UPS POWER RESTORED After a few seconds the LCD screen returns to the normal LCD display of host name and IP address Cobalt StaQware Cluster User Manual 59 Appendix A Using the LCD Console Rebooting To reboot the RaQ through the LCD console 1 Onthe LCD console hold down the S button for approximately 2 seconds The LCD screen displays SELECT SETUP NETWORK 2 Press the S button until Reboot appears in the LCD screen SELECT REBOOT 3 Press the button 4 Use the arrow buttons to toggle the cursor between Y and N Select Y to reboot the system 5 Press the button 60 Cobalt StaQware Cluster User Manual LCD commands Powering down Caution To prevent the potential loss of data it is important to l l follow the proper power down procedure before turning off the RaQ To power down the RaQ 1 On the LCD console hold down the S button for approximately 2 seconds The LCD screen displays SELECT SETUP NETWORK Press the S button until Power down appears in the LCD screen SELECT POWER
60. onization which can take from one to three hours depending on the size of the hard disk drive During this time the active RaQ can service requests but the automatic failover feature is not available until the process of data synchronization is complete For more information on possible failure scenarios and the results see Chapter 4 Failover Scenarios For more information on how the failure detection works on the StaQware Cluster see Failure detection on page 47 Failover time The following list explains the failover times a If the hard drive or public network interface on the active RaQ fails the standby RaQ takes over the services in one to five minutes b Ifthe active RaQ suffers a catastrophic failure for example a sudden power outage or a hard drive failure the standby RaQ checks the disk for errors to verify that the state of the file system is stable This process can take from five to ten minutes depending on the system 2 Cobalt StaQware Cluster User Manual Overview of setting up a StaQware Cluster Real time data replication Information written to the hard drive of an active RaQ is simultaneously written to the hard drive of the standby RaQ Overview of setting up a StaQware Cluster To set up a StaQware Cluster the RaQ Administrator performs the following steps For more detailed procedures see Chapter 2 Setting Up the Cluster 1 2 Connect the two RaQ servers according to one of
61. org The Cobalt RaQ also includes Majordomo a package for managing Internet mailing lists The latest version of Majordomo can be obtained from ftp ftp greatcircle com pub majordomo Sendmail is a trademark of Sendmail Inc Cobalt Networks Inc 555 Ellis Street Mountain View CA 94043 www cobalt com In the U S A Phone 888 70 COBALT 650 623 2500 Fax 650 623 2501 Outside the U S A Phone 1 650 623 2500 Fax 1 650 623 2501 Important Safeguards For your protection please read and understand all of the safety and operating instructions in the Cobalt RaQ user manual and retain for future reference Browsers Both Netscape Navigator and Microsoft Internet Explorer have bugs that can cause intermittent unexplained failures When using a Web browser to interact with your Cobalt RaQ you may occasionally experience a browser failure Released product versions of the browsers are usually more reliable than beta versions and later versions typically work the most reliably A browser program failure although annoying does not adversely affect your Cobalt RaQ s data To use the RaQ you need a personal computer attached to the network that uses a Web browser for example Netscape Navigator version 4 7 or later or Microsoft Internet Explorer version 5 0 or later To manage the RaQ from the Server Desktop you must enable cookies cascading style sheets and Javascript on your browser these featur
62. provides an explanation of the colors and the associated states of the StaQware Cluster Green is the only HA state all other colors indicate a non HA state Table 2 Status colors Color Status Gray Unconfigured non HA state Green Normal functioning HA state Yellow Failover is unavailable non HA state Red Severe problem non HA state Figure 10 shows the Cluster Status screen Figure 10 Cluster Status screen E Cluster Status Cluster Network Failover Control Server Management High Availability Cluster Management o Cluster Status kd 9 High Availiabilty services are active Key Unconfigured Q Normal Failover Unavailable 9 Severe Problem Cobalt StaQware Cluster User Manual 37 Chapter 3 Features of the StaQware Cluster software Cluster Network screen If you have not yet configured a standby RaQ see Configuration Wizard on page 25 If you have already configured a standby RaQ a Network Settings table appears see Figure 11 a Ifthe standby RaQ is rebuilding its drive or synchronizing its data to the active RaQ or is in a failed state the settings in this table appear as read only b Ifthe standby RaQ is operating normally the settings in this table can be changed Click Save Changes when finished If you change any of the settings in the Network Settings table and save the changes both the active RaQ and standby RaQ reboot and re establish the
63. r manuals or viii such other events outside Cobalt s reasonable control EXCEPT FOR THE EXPRESS WARRANTY STATED IN THIS PARAGRAPH COBALT DISCLAIMS ALL OTHER EXPRESS AND IMPLIED WARRANTIES ON THE PRODUCTS AND OR SERVICES FURNISHED HEREUNDER INCLUDING WITHOUT LIMITATION ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE AND THE STATED EXPRESS WARRANTY HEREUNDER IS IN LIEU OF ALL OTHER OBLIGATIONS OR LIABILITIES ON THE PART OF COBALT ARISING OUT OF OR IN CONNECTION WITH PERFORMANCE OF THE PRODUCT NO REPRESENTATIVE OF COBALT OR ANY AFFILIATE IS AUTHORIZED TO MAKE ORAL WARRANTIES PROMISES OR REPRESENTATIONS AS TO THE PRODUCT AND NONE SHALL BE BINDING UPON COBALT UNLESS IN WRITING AND SIGNED BY AN OFFICER OF COBALT THE DISCLAIMER OF WARRANTY AND LIMITATION OF LIABILITY CONTAINED HEREIN REFLECTS AN AGREED UPON RISK Cobalt StaQware Cluster User Manual 63 Appendix B Warranty and Licenses ALLOCATION AND PRICING CONSIDERATIONS BETWEEN THE PARTIES RELATED TO THE PRODUCT For purposes of this paragraph only and no others the term Customer shall include any party purchasing or otherwise acquiring Product directly from Cobalt Cobalt s authorized distributors or Cobalt s authorized value added resellers COBALT S SOLE RESPONSIBILITY UNDER THE WARRANTY HEREIN SHALL BE EITHER TO REPAIR OR REPLACE AT COBALT S OPTION ANY PRODUCT THAT FAILS BECAUSE OF DEFECT IN WORKMANSHIP OR MATERIAL PROVIDED CUSTOMER HAS REPOR
64. s A Active RaQ Monitoring IP address D Standby RaQ Monitoring IP address E Monitoring Network 1 Subnet Mask F Active RaQ Synchronization IP address G Standby RaQ Synchronization IP address H Synchronization Network 2 Subnet Mask I High Availability Cluster Management G EREA pa standby RaQ Assimilation Step 3 of 3 Standby RaQ IP Address A CUIU Standby RaQ Administrator Password B Failover Control Q Standby RaQ Administrator Password again C 9 Availability Monitoring Network 1 Configuration n 9 Active RaQ Network 1 IP Address D Standby RaQ Network 1 IP Address E Monitoring Network 1 Subnet Mask 255 255 0 0 F 9 Data Synchronization Network 2 Configuration Active RaQ Network 2 IP Address 172 27 27 1 G Standby RaQ Network 2 IP Address fmamae H 8 Synchronization Network 2 Subnet Mask 255 255 255 0 1 EB Enable Cluster
65. s a red circle and the error condition e The following message is displayed when you temporarily disable the monitoring function on the Failover Control screen For more information on the Temporarily Disable Monitoring feature see Temporarily Disable Monitoring on page 40 SERVICE INTERVAL IN PROGRESS e The following message is displayed when the active RaQ is acquiring a standby RaQ or if the Data Synchronization Network 2 ethernet cable was disconnected and has now been reconnected SYNCHRONIZING DATA If the StaQware Cluster returns to operating normally the LCD screen returns to the normal display STANDBY RAO FOR IP address of the active RaQ gt 54 Cobalt StaQware Cluster User Manual LCD commands LCD commands Active RaQ Through the LCD console on the active RaQ you can e change the network configuration information which is useful if the location of the RaQ is changed e configure the uninterruptible power supply UPS e reboot which restarts the entire RaQ e power down in a way that allows the RaQ to close all open files and minimizes startup time the next time the RaQ is powered on e exit from the LCD commands without making any changes Important Before turning off the RaQ follow the proper power D down procedure as described in Powering down on page 61 You access each of these functions by holding down the S select button on the LCD console for approximately two se
66. s not restricted and the output from the Program is covered only if its contents constitute a work based on the Program independent of having been made by running the Program Whether that is true depends on what the Program does 1 You may copy and distribute verbatim copies of the Program s source code as you receive it in any medium provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice and disclaimer of warranty keep intact all the notices that refer to this License and to the absence of any warranty and give any other recipients of the Program a copy of this License along with the Program You may charge a fee for the physical act of transferring a copy and you may at your option offer warranty protection in exchange for a fee 68 Cobalt StaQware Cluster User Manual GNU General Public License 2 You may modify your copy or copies of the Program or any portion of it thus forming a work based on the Program and copy and distribute such modifications or work under the terms of Section above provided that you also meet all of these conditions a You must cause the modified files to carry prominent notices stating that you changed the files and the date of any change b You must cause any work that you distribute or publish that in whole or in part contains or is derived from the Program or any part thereof to be licensed as a whole at no charge to all third parties under t
67. server Effects on services If an active RaQ fails over to a standby RaQ any outstanding connections are terminated When a standby RaQ takes over for the failed active RaQ it notifies the RaQ Administrator by email The services provided by the active RaQ are affected in the same manner as services on a RaQ that reboots unexpectedly Data that has been written to the hard disk drive is safe A program designed with server failures in mind is able to recover from an automatic failover with a minimum of problems Cobalt StaQware Cluster User Manual 43 Chapter 4 Failover Scenarios The specific effects on each service offered on the RaQ are 1 Web Any transactions that have not been completed are not performed The user must perform those transactions again 2 Email Sendmail Post Office Protocol POP and Internet Message Access Protocol IMAP all write to the disk before indicating that a transfer was successful If a failure occurs during a transfer the user may receive a duplicate email message as well as a truncated copy of the message The email messages are not lost 3 File transfer protocol The current connection fails leaving a partially completed FTP transfer The user must re initiate the connection and perform the transfer again 4 Legato Arkeia Web backup The current connection fails leaving a partially completed backup or restore function The user must re initiate the connection Important
68. since you have not signed it However nothing else grants you permission to modify or distribute the Program or its derivative works These actions are prohibited by law if you do not accept this License Therefore by modifying or distributing the Program or any work based on the Program you indicate your acceptance of this License to do so and all its terms and conditions for copying distributing or modifying the Program or works based on it 6 Each time you redistribute the Program or any work based on the Program the recipient automatically receives a license from the original licensor to copy distribute or modify the Program subject to these terms and conditions You may not impose any further restrictions on the recipients exercise of the rights granted herein You are not responsible for enforcing compliance by third parties to this License 7 If as a consequence of a court judgment or allegation of patent infringement or for any other reason not limited to patent issues conditions are imposed on you whether by court order agreement or otherwise that contradict the conditions of this License they do not excuse you from the conditions of this License If you cannot distribute so as to satisfy simultaneously your obligations under this License and any other pertinent obligations then as a consequence you may not distribute the Program at all For example if a patent license would not permit royalty free redistribution of t
69. tch If you use the Network 2 connector on the active RaQ for server maintenance you can use an additional switch or hub to connect the Network 2 interfaces to a local area network LAN 1 With a Category 5 ethernet cable connect the Network 1 interface on the active RaQ to an ethernet hub or switch See A in Figure 2 2 With a Category 5 ethernet cable connect the Network 1 interface on the standby RaQ to a different ethernet hub or switch See B in Figure 2 3 With a Category 5 ethernet cable connect the Network 2 interface on the active RaQ to an ethernet switch or hub See C in Figure 2 Cobalt recommends using a 100BaseT fast ethernet switch for best performance Using a slower hub or switch can have a negative effect on the performance of the StaQware Cluster The following list shows the types of connection descending from fastest to slowest a a crossover cable b a100 Mb s switch c a 100 Mb s hub d a 10 Mb s switch e a 10 Mb s hub 4 With a Category 5 ethernet cable connect the Network 2 interface of the standby RaQ to the same ethernet switch or hub as in Step 3 See D in Figure 2 Figure 2 shows the wiring configuration the Network 2 interfaces connected indirectly by means of an additional hub or switch 16 Cobalt StaQware Cluster User Manual Connecting the two RaQ servers Figure 2 Connecting the RaQ servers through an additional hub or switch Active RaQ
70. the rebuilt RaQ Configuration of a replacement standby RaQ To configure a replacement standby RaQ for an active RaQ you must first disband the current StaQware Cluster 1 On the Failover Control screen click Disband Cluster A confirmation dialog appears asking if you want to disband the StaQware Cluster 2 Click OK The Cluster Status screen shows a gray circle to indicate that the StaQware services are not configured 3 Now you can configure a new standby RaQ by proceeding through the Configuration Wizard again See Configuration Wizard on page 25 To return a former standby RaQ to normal RaQ server functionality you must rebuild the RaQ with the OS Restore CD Note Rebuilding the RaQ server with the OS Restore CD is a destructive process All data is lost on the rebuilt RaQ 42 Cobalt StaQware Cluster User Manual Chapter 4 Failover Scenarios Effects on assigned IP addresses Table 3 explains the effect on the IP addresses when a failover occurs Table 3 Effects on IP addresses when failover occurs IP address Effect of failover Sites on the RaQ server The IP addresses fail over to the new active RaQ Availability monitoring The IP addresses are paired to the media access control MAC address of the server and do NOT fail over to the new server Data synchronization The IP addresses are paired to the media access control MAC address of the server and do NOT fail over to the new
71. the two wiring diagrams Install the software package file pkg on the active RaQ through the standard Cobalt browser based user interface UI Configure a standby RaQ through the Configuration Wizard on the active RaQ rs Note The process of synchronizing a standby RaQ takes approximately 1 5 hours depending on the size of the hard disk drive During this time the active RaQ can service requests but the automatic failover feature is not available until the process of data synchronization is complete General information Before using the StaQware Cluster software users should be aware of the following items 1 Before you load the StaQware Cluster software package file pkg ensure that you have installed OS Update 2 0 or later for the RaQ on the active RaQ For more information see System setup on page 18 The process of converting a normal RaQ into a standby RaQ destroys all the data on the standby RaQ Ensure that you back up all data on the RaQ before you convert it into a standby RaQ The StaQware Cluster software does not affect the data on the active RaQ The two RaQ servers must have the same SKU number because the hard drives in the two RaQ servers must be the same size Verify the SKU number on the rear label of each server Cobalt StaQware Cluster User Manual 3 Chapter 1 Introduction 4 The StaQware Cluster software mirrors only the first internal IDE disk to the standby RaQ External storag
72. tive works based on the Program In addition mere aggregation of another work not based on the Program with the Program or with a work based on the Program on a volume of a storage or distribution medium does not bring the other work under the scope of this License Cobalt StaQware Cluster User Manual 69 Appendix B Warranty and Licenses 3 You may copy and distribute the Program or a work based on it under Section 2 in object code or executable form under the terms of Sections 1 and 2 above provided that you also do one of the following a Accompany it with the complete corresponding machine readable source code which must be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange or b Accompany it with a written offer valid for at least three years to give any third party for a charge no more than your cost of physically performing source distribution a complete machine readable copy of the corresponding source code to be distributed under the terms of Sections and 2 above on a medium customarily used for software interchange or c Accompany it with the information you received as to the offer to distribute corresponding source code This alternative is allowed only for noncommercial distribution and only if you received the program in object code or executable form with such an offer in accord with Subsection b above The source code for a work means the pref
73. ts instructions on data to enter the bottom line displays the data already entered Use the arrow buttons to the right of the LCD screen to enter the required network information manually Figure 13 LCD console I NES LCD screen LCD arrow buttons The arrow buttons function as follows The S button select displays the next option 5 amp 9 9 9 displayed Cobalt StaQware Cluster User Manual The Left arrow button moves the cursor to the left The Right arrow button moves the cursor to the right The Up arrow button increases the digit located at the cursor position The Down arrow button decreases the digit located at the cursor position The E button enter accepts the information entered or the option 53 Appendix A Using the LCD Console LCD display and messages When StaQware Cluster is operating normally e the LCD screen on the active RaQ displays lt hostname domainname of the active RaQ gt lt IP address of the active RaQ gt e the LCD screen on the standby RaQ displays STANDBY RAQ FOR lt IP address of the active RaQ gt The following messages can appear on the LCD display of the standby RaQ e The following message is displayed when one of the ethernet cables is disconnected STANDBY RAQ IS NOT HA CHECK CABLING For more information on the error go to the Cluster Status screen on the UI of the active RaQ the Cluster Status screen display
74. unavailable non HA state Red Severe problem non HA state Figure 4 Cluster Status screen High Availability Cluster Management x 9 Cluster Status Cluster Status 7 High Availability services are unconfigured Cluster Network Select the Cluster Network icon to begin the high availability configuration wizard Failover Control Key Unconfigured Q Normal Failover Unavailable 9 Severe Problem Server Management Cobalt StaQware Cluster User Manual 25 Chapter 2 Setting Up the Cluster To launch the Configuration Wizard click on Cluster Network on the left side of the screen The UI then presents a Configuration Wizard on the screen The Configuration Wizard has three screens 1 Screen 1 of the Configuration Wizard provides general information about the StaQware Cluster software It warns the user that all data on the RaQ selected to be the standby RaQ will be overwritten while it is acquired as a standby RaQ See Figure 5 2 Click Next at the bottom of the screen to proceed to Screen 2 Figure 5 Configuration Wizard Screen 1 High Availability Cluster Management E High Availability Configuration Wizard Step 1 of 3 Cluster Status Cluster Network Failover Control Server Management Welcome to the Cobalt High Availability Service configuration wizard This RaQ is the active RaQ whose contents will be mirrored onto a standby RaQ The two RaQs run as a pair constantly monitoring each ot
75. ups are added periodically The current groups include e an announcement list concerning Cobalt products e an information list for developers working on Cobalt products e auser list for sharing information between users of Cobalt products e a security list for users to address network security issues on Cobalt products The Knowledge Base Cobalt offers access to its online database of common installation and configuration problems and solutions You can access the site at http www cobalt com support kb Online technical papers For in depth technical information there are a number of technical papers available on Cobalt Networks Web site at http www cobalt com support Education For those who desire a premium level of technical expertise with Cobalt Networks Inc s products we offer a number of training courses The intended audience includes end users Cobalt resellers system and network administrators systems engineers product developers support technicians consultants and trainers You can access the site at http www cobalt com support education index html Cobalt StaQware Cluster User Manual 9 Chapter 1 Introduction Before contacting Cobalt Networks Technical Support Note To receive Technical Support you must first register your Cobalt product First make an effort to resolve the problem on your own Take note of all actions you perform and any error messages so that if necessary you can descri
76. word twice Enter the RaQ Administrator password twice for confirmation See B and C in Figure 6 Z Note If you are using a new RaQ server as the standby RaQ and did not go through the browser based Setup Wizard on the RaQ server you can leave the Standby RaQ Administrator password field blank Availability Monitoring Network 1 Configuration The active RaQ and the standby RaQ monitor the state of each other using the Network 1 interface 28 The IP address assigned to the function of availability monitoring is paired to the media access control MAC address of the server This IP address must be able to ping the gateway In case of a failover the IP address for availability monitoring does NOT migrate to the new active RaQ For example let us say that the IP address assigned on the active RaQ to the function of availability monitoring is 192 168 25 77 and that on the standby RaQ is 192 168 25 50 If a failover occurs the configuration settings on the Cluster Network screen now show that the active RaQ Monitoring IP Address is now 192 168 25 50 and that on the standby RaQ is now 192 168 25 77 Cobalt StaQware Cluster User Manual 3 UI based setup on the active RaQ Active RaQ Monitoring IP address Enter a dedicated IP address for the Network 1 interface of the active RaQ This address CANNOT be the IP address displayed on the LCD screen See D in Figure 6 the active RaQ Caution This IP a

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