Start a Ceph cluster

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.