Chapter 9. Rebooting the environment

Procedure

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

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

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

3. Reboot the node:

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   $ sudo reboot

4. Wait until the node boots.

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

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

   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:

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

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

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