RedHat 7 Cluster basic commands

View cluster status ===

These are the basic commands to control a Red Hat 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 or stop a resource

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crm_resource start/stop <GRUPO>

Example:

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crm_resource start redorbitaclus

Move resources

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pcs resource move <RECURSO>  <NODO>

Example:

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pcs resource move redorbitaclus  redorbitaclus01 restart

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

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pcs resource clear redorbitaclus

Move resources (Force resource)

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crm_resource –force –resource redorbitaclus  –move redorbitaclus01 –node  –quiet

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

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pcs resource clear redorbitaclus

Eliminate errors

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pcs resource cleanup

Consult the constraints

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pcs constraint location –full

Location Constraints:

Resource: redorbitaclus

Enabled on: redorbitaclus02.redorbita.com (score:INFINITY) (id:location-redorbitaclus -redorbitaclus02.redorbita.com-INFINITY)

Mostrar solo las location constraint:

pcs constraint location –full

Location Constraints:

Resource: redorbitaclus

Enabled on: redorbitaclus02.redorbita.com (score:INFINITY) (id:location-redorbitaclus -redorbitaclus02.redorbita.com-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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