[Gluster-users] upgrading OS on gluster servers

[Stefan Solbrig]

Dear all,

I was wondering what is the prefered way to upgrade the server OS (not glusterd) for a GlusterFS. 
I'm running a distributed-only system (no replication) on centos 7, planning an upgrade to centos 8 stream.

I suppose a possible way is like this:

* unmount file system on all clients
* stop cluster
* copy data in /var/lib/glusterd
* upgrade all servers
* restore data in /var/lib/glusterd

Could you please advise me if: 
- the files in /var/lib/glusterd  are all that is needed?
- or can I regenerate these from other data?

best wishes,
Stefan