I recently performed an update from the exact mentioned version 17.2.3 to .5 using cephadm. Like you, I was extremely concerned that something could go wrong since I have very little knowledge of what happens in the background. However, there were no problems :) I worried for nothing. Nevertheless, you should make sure to have backups of the most important data. I love ceph but also have a huge fear that something might not work and about 1.5PB of data (raw) might disappear... Hth Mehmet Am 20. Februar 2023 10:21:18 MEZ schrieb Nicola Mori <mori@fi.infn.it>:
Dear Ceph users,
my cephadm-managed cluster is currently based on 17.2.3. I see that 17.2.5 is available on quay.io, so I'd like to upgrade. I read the upgrade guide (https://docs.ceph.com/en/quincy/cephadm/upgrade/) and the "Potential problems" section is reassuringly short. Still I'm worried about potential problems that might arise during this upgrade: my cluster is in production and I fear about possible data losses or extended downtimes due to upgrade problems. So what should I expect from the upgrade process? Is it usually a smooth experience or are there frequent/known/probable issues? Are there some good practices to minimize the occurrency of problems and to eventually prepare for recovery procedures? Thank you,
Nicola