Hi list,
I came across some strange MDS behaviour recently where it is not possible to
start and MDS on a machine that happens to have the hostname "admin".
This turns out to be this code
https://github.com/ceph/ceph/blob/master/src/common/entity_name.cc#L128 that is
called by ceph-mds here
https://github.com/ceph/ceph/blob/master/src/ceph_mds.cc#L116.
Together with the respective systemd unit file (passing "--id %i") this prevents
starting an MDS on a machine witht he hostname admin.
Is this just old code and chance or is there a reason behind this? The MDS is
the only daemon doing that, though I did not check for other but similar checks
in other daemons.
Best,
Jan
--
Jan Fajerski
Engineer Enterprise Storage
SUSE Linux GmbH, GF: Felix Imendörffer, Mary Higgins, Sri Rasiah
HRB 21284 (AG Nürnberg)
