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6.6. Disabling the Cluster Software
It may become necessary to temporarily disable the cluster software on a cluster member. For example, if a cluster member experiences a hardware failure, you may want to reboot that member, but prevent it from rejoining the cluster to perform maintenance on the system.
Use the
/sbin/chkconfig command to stop the member from joining the cluster at boot-up as follows:
#chkconfig --level 2345 rgmanager off#chkconfig --level 2345 gfs off#chkconfig --level 2345 clvmd off#chkconfig --level 2345 cman off
Once the problems with the disabled cluster member have been resolved, use the following commands to allow the member to rejoin the cluster:
#chkconfig --level 2345 rgmanager on#chkconfig --level 2345 gfs on#chkconfig --level 2345 clvmd on#chkconfig --level 2345 cman on
You can then reboot the member for the changes to take effect or run the following commands in the order shown to restart cluster software:
service cman startservice clvmd start, if CLVM has been used to create clustered volumesservice gfs start, if you are using Red Hat GFSservice rgmanager start
