CentOS 8.x SAP Pacemaker cluster start and stop

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Stopping Pacemaker cluster app, DB and NFS

For pacemaker start and stop for Hana DB and application servers in RHEL refer below steps:

Stop Application servers

  1. From Master node, Put the cluster in maintenance mode: 
    pcs property set maintenance-mode=true
  2. Stop SAP services (PAS & AAS services) with help of SAP Application team
  3. Stop cluster services on Slave node
    1. Stop pacemaker cluster 
      pcs cluster stop
    2. Check services status 
      pcs cluster status
  4. Stop cluster services on Master node
    1. Stop pacemaker cluster 
      pcs cluster stop
    2. Check services status 
      pcs cluster status


Stop Database servers

  1. Put the cluster in maintenance mode: 
    pcs property set maintenance-mode=true
  2. Stop SAP DB services with help of SAP team
  3. Stop cluster services on Slave node
    1. Stop pacemaker cluster 
      pcs cluster stop
    2. Check services status 
      pcs cluster status
    3. Check HANA DB services status 
      su - <username>
      

      HDB info
  4. Stop cluster services on Master node
    1. Stop pacemaker cluster 
      pcs cluster stop
    2. Check services status 
      pcs cluster status
    3. Check HANA DB services status 
      su - <username>
      

      HDB info


If NFS server has Pacemaker cluster, then Stop NFS servers:

To stop NFS server use:

  1. Put the cluster in maintenance mode: 
    pcs property set maintenance-mode=true
  2. Stop cluster services on NFS2 node
    1. Stop pacemaker cluster 
      pcs cluster stop
    2. Check services status 
      pcs cluster status
  3. Stop cluster services on NFS1 node
    1. Stop pacemaker cluster 
      pcs cluster stop
    2. Check services status 
      pcs cluster status


Starting Pacemaker cluster app, DB and NFS

To start pacemaker clusters use below step:

If NFS server has Pacemaker cluster, then Start NFS servers

To start NFS server use:

  1. Check and Start cluster services on NFS1 node
    1. Check services status 
      pcs cluster status
    2. If cluster services not started, then start the same 
      pcs cluster start
  2. Check and Start cluster services on NFS2 node
    1. Check services status 
      pcs cluster status
    2. If cluster services not started, then start the same 
      pcs cluster start
  3. From Master node, Remove the cluster from maintenance mode: 
    pcs property set maintenance-mode=false


Start Database servers

  1. Start cluster services on Master node
    1. Start HANA DB manually. Take Help from SAP team
    2. Check and Start cluster services
      1. Check services status 
        pcs cluster status
      2. If cluster services not started, then start the same 
        pcs cluster start
  2. Start cluster services on Slave node
    1. Check and Start cluster services
      1. Check services status 
        pcs cluster status
      2. If cluster services not started, then start the same 
        pcs cluster start
  3. From Master node, Remove the cluster from maintenance mode: 
    pcs property set maintenance-mode=false


Start Application servers

  1. Start cluster services on Master node
    1. Start SAP services (PAS & AAS services) with help of SAP Application team
    2. Check and Start cluster services
      1. Check services status 
        pcs cluster status
      2. If cluster services not started, then start the same 
        pcs cluster start
  2. Start cluster services on Slave node
    1. Check and Start cluster services
      1. Check services status 
        pcs cluster status
      2. If cluster services not started, then start the same 
        pcs cluster start
  3. From Master node, Remove the cluster from maintenance mode: 
    pcs property set maintenance-mode=false


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