Chapter 10. Rebooting the environment

Procedure

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

   $ sudo podman exec -it ceph-mon-controller-0 ceph osd set noout
   $ sudo podman exec -it ceph-mon-controller-0 ceph osd set norebalance

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2. Select the first Ceph Storage node that you want to reboot and log in to the node.

3. Reboot the node:

   $ sudo reboot

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4. Wait until the node boots.

5. Log in to the node and check the cluster status:

   $ sudo podman exec -it ceph-mon-controller-0 ceph status

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   Check that 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 re-enable cluster rebalancing:

   $ sudo podman exec -it ceph-mon-controller-0 ceph osd unset noout
   $ sudo podman exec -it ceph-mon-controller-0 ceph osd unset norebalance

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

   $ sudo podman exec -it ceph-mon-controller-0 ceph status

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