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Once you create the cluster, you can start managing it using the clusvcadm and clustat
utilities. Below are some examples of using these utilities:
Displaying the status of a clustered service:
# clustat -s <service_name>
Restarting a clustered service:
# clusvcadm -R <service_name>
Stopping a clustered service:
# clusvcadm -s <service_name>
Relocating a clustered service from one cluster node to another:
# clusvcadm -r <service_name> - m <member>
For more information on both utilities, see their man pages.
Testing Clusters
To test the created cluster, you can do the following:
Use the clusvcadm utility to relocate a clustered service from one node to another:
# clusvcadm -r <service_name> - m <member>
Shut down or unplug a power cord on a cluster node.
If the cluster is operating correctly, the vz and parallels-server services are relocated from the
source server to the destination one (if you are using manual fencing, you may need to use the
fence_ack_manual tool to inform the cluster of the fenced node). If some service has failed to
start, investigate the cluster logs stored in /var/log/messages by default. Please keep in mind
that the information you are looking for may be placed on different cluster nodes.
C HAPTER 5
Managing Clusters
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