On 16/04/18 18:32, Shain Miley wrote: > Hello, > > We are currently running Ceph Jewel (10.2.10) on Ubuntu 14.04 in production. We have been running into a kernel panic bug off an on for a while and I am starting to look into upgrading as a possible solution. We are currently running version 4.4.0-31-generic kernel on these servers and have run across this same issue on multiple nodes over the course of the last 12 months. > > My 3 questions are as follows: > > 1)Are there any known issues upgrading a Jewel cluster to 16.04? > > 2)At this point is Luminous stable enough to consider upgrading as well? > > 3)If I did decide to upgrade both Ubuntu and Ceph..in which order should the upgrade occur? > > Thanks in advance for any insight that you are able to provide me on this issue! > > Shain When Luminous came out I did a multipart upgrade where I took my cluster from 14.04 to 16.04 (HWE kernel line), updated from jewel to luminous and migrated OSDs from filestore to bluestore (in that order). I had absolutely no issues throughout the process. The only thing I would suggest is that you reinstall your nodes to 16.04 rather than release-upgrading - previous experience with trying to release-upgrade on other hosts was sometimes painful, rebuilding was easier. Rich
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