Re: Ceph Maintenance

[David Turner <david.turner@xxxxxxxxxxxxxxxx>]

Everything is correct except for shutting down the VM's.  There is no need for downtime during this upgrade.  As long as your cluster comes back to health_ok (or just showing that the noout flag is set and nothing else), then you are free to move on to the next node.

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David Turner | Cloud Operations Engineer | StorageCraft Technology Corporation 380 Data Drive Suite 300 | Draper | Utah | 84020 Office: 801.871.2760 | Mobile: 385.224.2943

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From: ceph-users [ceph-users-bounces@xxxxxxxxxxxxxx] on behalf of Mike Jacobacci [mikej@xxxxxxxxxx]
Sent: Tuesday, November 29, 2016 11:41 AM
To: ceph-users
Subject: [ceph-users] Ceph Maintenance

Hello,

I would like to install OS updates on the ceph cluster and activate a second 10gb port on the OSD nodes, so I wanted to verify the correct steps to perform maintenance on the cluster.  We are only using rbd to back our xenserver vm's at this point, and our cluster consists of 3 OSD nodes, 3 Mon nodes and 1 admin node...  So would this be the correct steps:

1. Shut down VM's?

2. run "ceph osd set noout" on admin node

3. install updates on each monitoring node and reboot one at a time.

4. install updates on OSD nodes and activate second 10gb port, reboot one OSD node at a time

5. once all nodes back up, run "ceph osd unset noout"

6. bring VM's back online

Does this sound correct?

Cheers,

Mike

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