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
   ...