3.Check and apply the Continentalclusters configuration.
#cmcheckconcl
#cmapplyconcl -v -C cmconcl.config
4.Restart the monitor packages on every cluster.
#cmmodpkg -e ccmonpkg
5.View the status of the Continentalclusters.
#cmviewconcl
Before applying the edited configuration, the data storage associated with every cluster needs to be prepared to match the new role. In addition, the data replication direction needs to be changed to mirror data from the new primary cluster to the new recovery cluster.
Switching the Primary and Recovery Cluster Roles using cmswitchconcl
Continentalclusters provides the command cmswitchconcl to facilitate steps two and three described in the section “Switching the Primary and Recovery Cluster Roles” (page 32). The command cmswitchconcl is used to switch the roles of primary and recovery packages of the Continentalclusters recovery groups for which the specified cluster is defined as the primary cluster. Do not use the cmswitchconcl command in a multiple recovery pair configuration where more than one primary cluster is sharing the same recovery cluster. Otherwise, the command will fail.
When switching roles for a recovery group configured with a rehearsal package, the rehearsal package in the old recovery cluster must be removed before the configuration is applied. The newly generated recovery group configuration will not have any rehearsal package configured.
WARNING! When you configure the maintenance mode for a recovery group, you must move all recovery groups, whose roles have been switched out of the maintenance mode before applying the new configuration.
NOTE: Before running the cmswitchconcl command, the data storage associated with every cluster needs to be prepared properly to match the new role. In addition, the data replication direction needs to be changed to mirror data from the new primary cluster to the new recovery cluster.
The cmswitchconcl command cannot be used for the recovery groups that have both data sender and data receiver packages specified.
To restore disaster tolerance with cmswitchconcl while continuing to run the packages on the surviving cluster, use the following procedures:
1.Halt the monitor package on every cluster.
#cmhaltpkg ccmonpkg
2.Run this command.
#cmswitchconcl
The above command switches the roles of the primary and recovery packages of the Continentalclusters recovery groups for which “OldPrimaryClusterName” is defined as the primary cluster.
The default values of monitoring package name (ccmonpkg) and interval (60 seconds), and notification scheme (SYSLOG) with notification delay (0 seconds) added for cluster “OldPrimaryClusterName”, which will serve as the
If editing of the default values are desired, do it with file
“NewContinentalclusterConfigFileName” if
“CurrentContinentalclustersConfigFileName” if
Retaining the original roles for primary and recovery cluster | 33 |
