LinuxHA

Files

Config file:

/etc/ha.d/ha.cf

Resources file:

/etc/ha.d/haresources

Commands

cl_status:

Subcommand	Action
cl_status rscstatus	Show the status of cluster resources. Status will be one of: local, foreign, all or none.
cl_status hbstatus	Indicate if heartbeat is running on the local system.
cl_status listnodes	List the nodes in the cluster
cl_status nodetype TYPE	List the nodes of the given type. Currently the available types are ping and normal.
cl_status listhblinks NODENAME	List the network interfaces used as heartbeat links. Nodename should be as per the ha.cf file for the cluster.
cl_status hblinkstatus NODENAME LINKNAME	Show the status of a heartbeat link. Nodename should be as per the ha.cf file for the cluster. Linkname should be as per the output of the listhblinks subcomand.

Migrating resources:

Command	Run local action	Equivalent remote command
hb_standby local	Migrate preferred resources to remote	hb_takeover foreign
hb_standby foreign	Migrate non-preferred remote resources to remote	hb_takeover local
hb_standby all	Migrate all resources to remote	hb_takeover all
hb_standby	same as above	hb_takeover