Re: ceph-mon crash after update from hammer 0.94.7 to jewel 10.2.3

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That recommendation changed to upgrade OSDs first then Monitors due to http://tracker.ceph.com/issues/17386#note-6 

Ian

On Wed, Nov 9, 2016 at 3:11 PM, Peter Maloney <peter.maloney@xxxxxxxxxxxxxxxxxxxx> wrote:
On 11/09/16 15:06, Alexander Walker wrote:

Hello,

I've a cluster of three node (two osd on each node). First I've updated on node - osd is ok and running, but ceph-mon crashed.

What does that mean... you updated a mon and an osd, and other mons and osds are not upgraded?  I think you should not start an upgraded osd before the rest of the mons are upgraded.


http://docs.ceph.com/docs/master/install/upgrading-ceph/:
We recommend upgrading in this order:
  1. Ceph Deploy
  2. Ceph Monitors
  3. Ceph OSD Daemons
  4. Ceph Metadata Servers
  5. Ceph Object Gateways

    ... a general rule, we recommend upgrading all the daemons of a specific type (e.g., all ceph-mon daemons, all ceph-osd daemons, etc.) to ensure that they are all on the same release...


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Peter Maloney
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Ian R. Colle
Global Director of Software Engineering
Red Hat, Inc.
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