Linux cluster commands
Checking status of the cluster:
# clustat
# clustat -m Display status of and exit
# clustat -s Display status of and exit
# clustat -l Use long format for services
# cman_tool status Show local record of cluster status
# cman_tool nodes Show local record of cluster nodes
# cman_tool nodes -af
# ccs_tool lsnode List nodes
# ccs_tool lsfence List fence devices
# group_tool displays the status of fence, dlm and gfs groups
# group_tool ls displays the list of groups and their membership
Resource Group Control Commands:
clusvcadm -d Disable
clusvcadm -e Enable
clusvcadm -e -F Enable according to failover domain rules
clusvcadm -e -m Enable on
clusvcadm -r -m Relocate to member>
clusvcadm -R Restart a group in place.
clusvcadm -s Stop
Resource Group Locking (for cluster Shutdown / Debugging):
clusvcadm -l Lock local resource group manager.
This prevents resource groups from
starting on the local node.
clusvcadm -S Show lock state
clusvcadm -Z Freeze group in place
clusvcadm -U Unfreeze/thaw group
clusvcadm -u Unlock local resource group manager.
This allows resource groups to start on the local node.
clusvcadm -c Convalesce (repair, fix) resource group.
Attempts to start failed, non-critical resources within a resource group.
###################################################################################################
Cluster Command Quick Reference
1)Cluster status
clustat Display the status of the cluster as viewed from the executing host
2)Cluster services administration
clusvcadm Manage services across the cluster.
3)Move a service to another node
clusvcadm –r -m
4)Stop a service
clusvcadm –d
5)Start a service
clusvcadm –e
6)Cluster configuration system
ccs_tool Online management of cluster configuration
7)Update the cluster.conf file across the cluster
ccs_tool update /etc/cluster/cluster.conf
8)Cluster Management
cman_tool Manage cluster nodes and display the current state of the cluster
9)Display status
cman_tool status
10)Fencing tools
11)Eject a node from the cluster
fence_node
12)Print fence debug messages
fence_tool dump
Recent Comments