4. How do i list pacemaker cluster constraints using pcs?

How do i list pacemaker cluster constraints using pcs?


  • Constraints are similar in some respects to dependancies, especially the Ordering Constraints.

    Here making sure the Cluster_Server (which is actually the IP address), starts first, then make sure the DRBD is synced, start the WebFS (Filesystem), then the WebSite (apache).

    # pcs constraint list
Location Constraints:
  Resource: WebFS
    Enabled on: u1priv (score:INFINITY) (role: Started)
  Resource: WebSite
    Enabled on: u1priv (score:50)
Ordering Constraints:
  start Cluster_Server then start WebSite (kind:Mandatory)
  promote WebDataClone then start WebFS (kind:Mandatory)
  start WebFS then start WebSite (kind:Mandatory)
Colocation Constraints:
  WebSite with Cluster_Server (score:INFINITY)
  WebFS with WebDataClone (score:INFINITY) (with-rsc-role:Master)
  WebSite with WebFS (score:INFINITY)
Ticket Constraints:
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