My understanding is that anti-affinity will be enforced unless the service spec explicitly allows more than one instance per host.

Let’s say I have 2 cephfs, and three hosts I want to use as MDS hosts.

I use ceph orch apply mds to spin up the MDS daemons.

Is there a way to ensure that I don’t get two active MDS running on the same host?

I mean when using the ceph orch apply mds command, I can specify —placement, but it only seems like I can define the hosts, but not let’s say a primary host or something similar.

Anyone with knowledge of how to do this or is it simply not possible? _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io