Start a Ceph cluster¶

This section describes how to correctly start a Ceph cluster after it was powered off.

1. Power on the Ceph Monitor nodes.

2. Power on the Ceph OSD nodes.

3. Wait for all nodes to become available.

4. Unset the Ceph OSD flags:

   ceph osd unset noout
   ceph osd unset nobackfill
   ceph osd unset norecover
   ceph osd unset norebalance
   ceph osd unset nodown
   ceph osd unset pause
   

5. Power on the RADOS Gateway nodes.

6. Start all clients that write to Ceph.