Chapter 10. Rebooting the Environment

Procedure

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

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

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2. Select the first Ceph Storage node to reboot and log into the node.

3. Reboot the node:

   $ sudo reboot

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4. Wait until the node boots.

5. Log into the node and check the cluster status:

   $ sudo ceph -s

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

6. Log out of the node, reboot the next 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

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

   $ sudo ceph status

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