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SAP HA commands in HP-UX

 The following are some commonly used HP-UX commands related to SAP HA:


  1. cmruncl:
    • Function: Starts the High Availability (HA) service.
    • Example: After system up, run cmruncl to bring the HA infrastructure online.
  2. cmviewcl:
    • Function: Checks the status of the HA system.
    • Example: When suspecting an issue with a cluster node, run cmviewcl to view detailed node, resource, and package states.
      HP-UX cmviewcl

  3. cmhaltnode -v node_name:
    • Function: Gracefully removes a specific node from the cluster.
    • Example: To perform maintenance on "server01", execute cmhaltnode -v server01.
  4. cmrunnode -v node_name:
    • Function: Adds a particular node back into the cluster.
    • Example: After finishing maintenance on "server01", run cmrunnode -v server01 to reintegrate it.
  5. cmhaltpkg -v package_name:
    • Function: Halts the currently active dual - node package.
    • Example: If the "db_ha_package" has issues, use cmhaltpkg -v db_ha_package to stop it.
  6. cmrunpkg -n node_name package_name:
    • Function: Move the resource package to another node.
    • Example: When the primary node running "db_ha_package" fails, run cmrunpkg -n server02 db_ha_package to start on the secondary node.
  7. cmhaltcl –f:
    • Function: Forces the termination of the HA service.
    • Example: In case of an irrecoverable HA cluster state, like a corrupted config file, run cmhaltcl –f (use with caution).
  8. cmruncl -v -n node_name:
    • Function: Potentially starts the HA cluster in verbose mode on a specified node in a shell script or command - line context.
    • Example: In a custom startup script, uncomment and modify for the target server.

The HP-UX HA log directory is /etc/cmcluster/ .

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