OS upgrades most often don't have any impact on C*, and you'd likely only expect trouble on a major upgrade, but this would typically be related to package installation, rather than any effects on the database itself. I wouldn't be too worried about going from RHEL7.4 to 7.9, however going to 8 you may want to test your installation/systemd units/OS settings you may have tuned. Best practice is to do a test run on a non production cluster, and always perform a rolling upgrade one node at a time to ensure no downtime.
Also play it safe and don't perform more than one operation at a time. Do the OS upgrade only - and try to avoid changes to Cassandra itself. Cheers, Kane raft.so - Cassandra consulting, support, and managed services On Mon, Mar 1, 2021 at 2:30 PM Pushpendra Rajpoot < pushpendra.nh.rajp...@gmail.com> wrote: > Hi All, > > I am running Cassandra 3.11.2 on RHEL 7.4. I am planning for an OS > upgrade from RHEL 7.4 to RHEL 7.9/8.x and SLES15. But I could not find any > relevant information on the impact of upgrading an OS. > > Could you share any reference or your analysis of these impacts? I would > appreciate it if you could share your thoughts. > > Regards, > Pushpendra >
