Chapter 9. Rebooting the environment

Procedure

1. Log in to a Ceph MON or Controller node and disable Ceph Storage cluster rebalancing temporarily:

   $ sudo ceph osd set noout
   $ sudo ceph osd set norebalance

   Copy to Clipboard Toggle word wrap
2. Select the first Ceph Storage node to reboot and log into it.

3. Reboot the node:

   $ sudo reboot

   Copy to Clipboard Toggle word wrap
4. Wait until the node boots.

5. Log in to a Ceph MON or Controller node and check the cluster status:

   $ sudo ceph -s

   Copy to Clipboard Toggle word wrap

   Check that the pgmap reports all pgs as normal (active+clean).

6. Log out of the Ceph MON or Controller node, reboot the next Ceph Storage node, and check its status. Repeat this process until you have rebooted all Ceph storage nodes.

7. When complete, log into a Ceph MON or Controller node and enable cluster rebalancing again:

   $ sudo ceph osd unset noout
   $ sudo ceph osd unset norebalance

   Copy to Clipboard Toggle word wrap

8. Perform a final status check to verify the cluster reports HEALTH_OK:

   $ sudo ceph status

   Copy to Clipboard Toggle word wrap