Hello!
We are planning to upgrade our Ubuntu 14.04.1 based cluster from Ceph
Firefly 0.80.7 to 0.80.8. We have 4 nodes, 12x4TB spinners each (plus
OS disks). Apart from the 12 OSDs per node, nodes 1-3 have MONs running.
The instructions on ceph.com say it is best to first restart the MONs,
then the OSDs. We are wondering, if updating the packages from the
repository will trigger daemon reloads through package scripts. This
would then certainly not guarantee the restart order recommended.
Do these instructions assume that the monitors are separate machines
that could be updated first? If so, are there best-practice
recommendations on how to update a production cluster without service
interruption?
Thanks a lot for any advice!
Daniel
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