[ Adding dev@ ] I brought this up in the CLT meeting today and Sebastian pointed to https://docs.ceph.com/en/latest/cephadm/host-management/#fully-qualified-domain-names-vs-bare-host-names It sounds like as long as the cephadm config and the output of hostname match, things should work. But there's no attempt to match long hostnames to short names in the config or vice versa. Sebastian referenced some other issue with crush locations not matching but I wasn't clear on how impactful that is. -Greg On Tue, Dec 7, 2021 at 5:56 AM David Galloway <dgallowa@xxxxxxxxxx> wrote: > > > > On 12/6/21 6:04 PM, Gregory Farnum wrote: > > On Mon, Dec 6, 2021 at 1:18 PM Sage Weil <sage@xxxxxxxxxxxx> wrote: > >> > >> I was having trouble with the gibba cluster because it has long hostnames (`hostname` reports e.g. gibba001.front.sepia.ceph.com) and cephadm prefers short hostnames. It took a bit of looking but I eventually tracked this down to this code in /etc/rc.d/rc.local: > > > > It sounds like that's something that should be fixed in cephadm as > > well, then? Is there a ticket for that? > > +1 This sounds like a classic case of adapting the CI/testing to work > around something that isn't its fault. > > > > >> > >> https://github.com/ceph/ceph-cm-ansible/blob/master/roles/cobbler/templates/snippets/cephlab_rc_local#L112-L134 > >> > >> This ends up setting the hostname to a fqdn on every boot. I'm not sure if that is necessary for some other reason or if we can adjust this ``hostname $hosrthostname`` instead? > >> > >> In the meantime I just disabled this block for the gibba nodes. > > It only runs on firstboot after being FOG reimaged. > > https://github.com/ceph/ceph-cm-ansible/blob/master/roles/cobbler/templates/snippets/cephlab_rc_local#L40 > _______________________________________________ Dev mailing list -- dev@xxxxxxx To unsubscribe send an email to dev-leave@xxxxxxx
