Shut down a Ceph cluster

Shut down a Ceph cluster

This section describes how to shut down an entire Ceph cluster. Make sure that your Ceph cluster is healthy before proceeding with the following steps.

  1. Stop all clients that write to Ceph.

  2. Shut down the RADOS Gateway nodes:

    salt 'rgw*' system.poweroff
    
  3. Set the Ceph OSD flags:

    ceph osd set noout
    ceph osd set nobackfill
    ceph osd set norecover
    ceph osd set norebalance
    ceph osd set nodown
    ceph osd set pause
    
  4. Shut down the Ceph OSD nodes one by one:

    salt 'osd01*' system.poweroff
    salt 'osd02*' system.poweroff
    salt 'osd03*' system.poweroff
    ...
    
  5. Shut down the Ceph Monitor nodes one by one:

    salt 'cmn01*' system.poweroff
    salt 'cmn02*' system.poweroff
    salt 'cmn03*' system.poweroff
    ...