-Greg
On Sat, Feb 28, 2015 at 10:55 AM David <david@xxxxxxxxxx> wrote:
Hi!
I’m about to do maintenance on a Ceph Cluster, where we need to shut it all down fully.
We’re currently only using it for rados block devices to KVM Hypervizors.
Are these steps sane?
Shutting it down
1. Shut down all IO to the cluster. Means turning off all clients (KVM Hypervizors in our case).
2. Set cluster to noout by running: ceph osd set noout
3. Shut down the MON nodes.
4. Shut down the OSD nodes.
Starting it up
1. Start the OSD nodes.
2. Start the MON nodes.
3. Check ceph -w to see the status of ceph and take actions if something is wrong.
4. Start up the clients (KVM Hypervizors)
5. Run ceph osd unset noout
Kind Regards,
David
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