Pacemaker

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Revision as of 08:44, 27 June 2018 by Tony (talk | contribs)

uses Corosync or heartbeat, (it seems) corosync is the one to go for.

Links

Notes

by specifying -INFINITY, the constraint is binding.


Commands/tools

Useful commands

Dump entire crm

cibadm -Q

FAQ

Move resource to node

pcs resource move RES NODE

Show default resource stickiness

pcs resource default

Undo resource move

pcs constraint --full
Location Constraints:
  Resource: FOO
    Enabled on: santest-a (score:INFINITY) (role: Started) (id:cli-prefer-FOO)
pcs constraint remove cli-prefer-FOO

pcs status: Error: cluster is not currently running on this node

Don't panic until after

sudo pcs status

show detailed resources

pcs resource --full

stop node

pcs cluster standby node-1

or

pcs node standby

on the node itself

set maintenance mode

pcs property set maintenance-mode=true


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

Show allocation scores

crm_simulate -sL

Show resource failcount

pcs resource failcount show <resource>


debug resource

pcs resource debug-start resource

*** Resource management is DISABLED *** The cluster will not attempt to start, stop or recover services

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