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3. Start cluster service. Assume the service name is HA1, it is disabled, and will be started on

“passive” server.

# clusvcadm –e HA1 –m passive

4. Relocate cluster service. Assume the service name is HA1, it is running on “passive” server, and

will be relocated to “active” server.

# clusvcadm –r HA1 –m active

A.9.3. Debug HA cluster configuration

If a cluster-controlled service will not start, it may be due to configuration or syntax faults in the

service configuration as specified in /etc/cluster/cluster.conf. rg_test is a powerful debug

tool to identify the sources of issues.

Note: Before running rg_test, make sure that the cluster service is stopped and disabled first.

For example, assume the cluster service name is HA1, to debug the HA cluster configuration, please

follow the instructions below.

# clusvcadm –s HA1

# clusvcadm –d HA1

# rg_test test /etc/cluster/cluster.conf

Please check the output of rg_test to verify a configuration or identify issues with a configuration.

rg_test can also be used to explicitly start or stop a service to display the start or stop ordering of a

service. For example,

Start a service

# rg_test test /etc/cluster/cluster.conf start service HA1

Stop a service

# rg_test test /etc/cluster/cluster.conf stop service HA1

Note: Only do the above tests on one node, and always disable the service using clusvcadm first.

Clients will be able to access the file system when rg_test is used to start a service since rg_test

mimics normal operation. So use rg_test with care and ONLY for debugging. clustat and

clusvcadm should be used to manage the cluster and cluster service during normal operation.

A.9.4. Remove a node from HA cluster

To turn off or reboot the “active” or “passive” server, it must first leave the HA cluster gracefully.

Otherwise the other server will assume that it has died and fence it. To leave the cluster gracefully,

follow the instructions below.

# service clvmd stop

# service rgmanager stop

# fence_tool leave

# cman_tool leave remove