There is nothing that will stop you from having an even number of mons (including 2). You just run the chance of getting into a split brain scenario. As long as you aren't planning to stay in that scenario, I don't see a problem with it. I have 3 mons in my home cluster and I've had to remove one before leaving me with 2 for a few hours while I re-provisioned the third and nothing funky happened.
Most ways to deploy a cluster allow you to create the cluster with 3+ mons at the same time (inital_mons). What are you doing that only allows you to add one at a time? On Tue, Aug 15, 2017 at 12:22 PM Oscar Segarra <oscar.sega...@gmail.com> wrote: > Hi, > > I'd like to test and script the adding monitors process adding one by one > monitors to the ceph infrastructure. > > Is it possible to have two mon's running on two servers (one mon each) --> > I can assume that mon quorum won't be reached until both servers are up. > > Is this right? > > I have not been able to find any documentation about the behaviour of the > sistem with just two monitors (or an even number of them). > > thanks a lot. > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
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