Basic Pacemaker Cluster Commands

See the status of the clus ===

These are the basic commands to control a Pacemaker cluster from command line. View Cluster status, start/stop/restart/move resources and services, etc.

View cluster status:

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pcs cluster status

View the status of resources

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pcs status resources

Start a resource

Syntax:

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pcs resource start <Cluster IP>

Example:

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pcs resource start clusterIP

It can also be done using the command: crm_resource

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crm_resource start clusterbd

Stop a resource

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pcs resource stop clusterIP

It can also be done using the command: crm_resource

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crm_resource stop clusterbd

Move resources

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pcs resource move <RECURSO>  <NODO>

Example:

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pcs resource move clusterbd node02

*NOTE: After always moving the resource, you must execute:

pcs resource clear <ClusterIP>

It can also be done using the command: crm_resource

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crm_resource  –resource clusterIP –move –node node02

Force the resource to move

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crm_resource –force –resource clusterIP –move –node node02   –quiet

*NOTE: After always moving the resource, you must execute:

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pcs resource clear clusterbd

Eliminate errors

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pcs resource cleanup

Consult the constraints

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pcs constraint location –full
Location Constraints:
Resource: clusterIP
Enabled on: nodo02 (score:INFINITY) (id:location-clusterIP-nodo02-INFINITY)

Show only location constraint:

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pcs constraint location –full
Location Constraints:
Resource: clusterbd
Enabled on: nodo02 (score:INFINITY) (id:location-clusterIP-nodo02-INFINITY)

Put a node into maintenance

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pcs cluster standby <NODO>

Remove a node from maintenance mode

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pcs node unstandby <NODO>

All the best.

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