Pacemaker
From DWIKI
uses Corosync or heartbeat, (it seems) corosync is the one to go for.
Links
- Cluster Labs
- Pacemaker explained
- Building a high-available failover cluster with Pacemaker, Corosync & PCS
- HIGH AVAILABILITY ADD-ON ADMINISTRATION
- How To Create a High Availability Setup with Corosync, Pacemaker, and Floating IPs on Ubuntu 14.04
- http://fibrevillage.com/sysadmin/304-pcs-command-reference
- Cheatsheet
- PCS tips&tricks
- pacemaker + drbd + iscsi, also useful pcs tips
- Mandatory and advisory ordering in Pacemaker
Notes
by specifying -INFINITY, the constraint is binding.
Commands/tools
- crm
- crmadmin
- cibadm
- pcs
- corosync
Useful commands
Dump entire crm
cibadm -Q
FAQ
show detailed resources
pcs resource --full
stop node
pcs cluster standby node-1
or
pcs node standby
set maintenance mode
pcs property set maintenance-mode=true
show virtual ip
pcs resource show IPv4_BIND
Error: cluster is not currently running on this node
pcs cluster start
Remove a constraint
pcs constraint list --full
to identify the constraints and then
pcs constraint remove <whatever-constraint-id>
Clear error messages
pcs resource cleanup
Call cib_replace failed (-205): Update was older than existing configuration
can be run only once
[Error signing on to the CIB service: Transport endpoint is not connected ]
probably selinux
debug resource
pcs resource debug-start resource
*** Resource management is DISABLED *** The cluster will not attempt to start, stop or recover services
??
