clustering

Cluster is split into two components; cluster communication managed by cman and resource management provided by rgmanager.

tools

cman_tool nodes
ccs_config_validate
cman_tool version
cman_tool version -r
clustat

List DLM lockspaces:

dlm_tool ls

Fence status tikrinimas, kai cman veikia:

fence_check

managing a cluster

clusvcadm -e <service> -m <node>
clusvcadm -d <service>
clusvcadm -e vm:vm01-win2008 -m an-c05n01.alteeve.ca  :: start (enable) a vm
clusvcadm -d vm:vm01-win2008  :: shutdown (disable) a vm
clusvcadm -M vm:vm01-win2008 -m an-c05n02.alteeve.ca  :: live migrate a vm

Rebooting a cluster node

• Stop rgmanager, cman on every node that is to be restarted (mind the quorum).
• Reboot.
• Start cman, rgmanager.

clvm

Start only when cman is running and cluster is healthy.

links

https://alteeve.ca/w/AN!Cluster_Tutorial_2