Building Disaster Recovery Serviceguard Solutions Using Continentalclusters for Linux B.01.00.00

Overview of maintenance mode feature...........................................................................31
Setting up the file system for Continentalclusters state directory............................................31
Configuring the monitor package to mount the file system from the shared disk......................32
Configuring Continentalclusters rehearsal packages................................................................33
Modifying Continentalclusters configuration...........................................................................33
Precautions to be taken while performing DR Rehearsal...............................................................34
Client access IP address at recovery cluster............................................................................34
Cluster role switch during rehearsal......................................................................................34
Performing Disaster Recovery rehearsal in Continentalclusters.......................................................34
Cleanup of secondary mirror copy............................................................................................36
Recovering the primary cluster disaster during DR Rehearsal.........................................................36
Limitations of DR rehearsal feature............................................................................................36
6 Administering Continentalclusters................................................................38
Checking the status of clusters, nodes, and packages..................................................................38
Enabling and disabling maintenance mode...............................................................................40
Configuring targets for notifications sent by Continentalclusters ....................................................40
Recovering a cluster when the storage array or disks fail..............................................................41
Starting a recovery package forcefully.......................................................................................42
Adding or Removing a Node from a Cluster...............................................................................42
Adding a Recovery Group to Continentalclusters.........................................................................43
Modifying a package in a recovery group.................................................................................43
Modifying Continentalclusters configuration...............................................................................44
Removing a recovery group from the Continentalclusters..............................................................44
Removing a rehearsal package from a recovery group................................................................44
Modifying a recovery group with a new rehearsal package.........................................................44
Changing monitoring definitions...............................................................................................45
Behavior of Serviceguard commands in Continentalclusters..........................................................45
Verifying the status of Continentalclusters daemons......................................................................46
Renaming the Continentalclusters..............................................................................................46
Deleting the Continentalclusters configuration.............................................................................46
Maintaining the data replication environment.............................................................................47
Maintaining Continuous Access P9000 and XP Data Replication Environment............................47
Resynchronizing the device group....................................................................................47
Using the pairresync command.......................................................................................48
Additional points ..........................................................................................................48
Maintaining Metrocluster with Continuous Access EVA P6000 for Linux data replication
environment......................................................................................................................49
Continuous Access EVA Link Suspend and Resume Modes..................................................49
Maintaining 3PAR Remote Copy data replication environment.................................................49
Viewing the Remote Copy volume group details................................................................49
Remote Copy Link Failure and Resume Modes...................................................................50
Restoring replication after a failover.................................................................................50
7 Troubleshooting Continentalclusters.............................................................51
Reviewing Messages and Log Files............................................................................................51
Reviewing Messages and Log Files of Monitoring Daemon......................................................51
Reviewing Messages and Log Files of Packages in Recovery Groups.........................................51
Reviewing Logs of Notification Component............................................................................51
Troubleshooting Continentalclusters Error Messages.....................................................................51
A Continentalclusters Worksheets..................................................................53
Data Center Worksheet ..........................................................................................................53
Recovery Group Worksheet ....................................................................................................53
Cluster Event Worksheet .........................................................................................................54
Recovery Checklist..................................................................................................................54
4 Contents