Designing Disaster Tolerant High Availability Clusters, 10th Edition, March 2003 (B7660-90013)

Building a Continental Cluster
Restoring Disaster Tolerance
Chapter 5258
4. Restart the monitor packages. Issue the following command on each
cluster:
# cmmodpkg -e ccmonpkg
5. View the status of the ContinentalCluster.
# cmmviewconcl
Before applying the edited configuration, the data storage associated
with each 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.
Primary Packages Remain on the Surviving Cluster
using cmswitchconcl
ContinentalClusters provides the command cmswitchconcl to facilitate
steps two and three described in the section “Primary Packages Remain
on the Surviving Cluster”. 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.
To restore disaster tolerance with cmswitchconcl while continuing to
run the packages on the surviving cluster, use the following procedures:
NOTE Before running the cmswitchconcl command, the data storage
associated with each 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.
The cmswitchconcl command cannot be used for the recovery groups
that have both data sender and data receiver packages specified.
1. Halt the monitor package on each cluster:
# cmhaltpkg ccmonpkg
2. Run:
# cmswitchconcl \
-C currentContinentalClustersConfigFileName \