[ceph-users] Re: Do I need to update ceph.conf and restart each OSD after adding more MONs?

On 3/26/21 6:06 PM, Tony Liu wrote:

Hi,

Do I need to update ceph.conf and restart each OSD after adding more MONs?

This should not be necessary, as the OSDs should learn about these changes through monmaps. Updating the ceph.conf after the mons have been updated is advised.

This is with 15.2.8 deployed by cephadm.

When adding MON, "mon_host" should be updated accordingly. Given [1], is that update "the monitor cluster’s centralized configuration database" or "runtime overrides set by an administrator"?

No need to put that in the centralized config database. I *think* they mean ceph.conf file on the clients and hosts. At least, that's what you would normally do (if not using DNS). Gr. Stefan