Hi,
I'm running a 3-node test cluster on Ubuntu 12.04, without cephx
authentication. I started out running 0.47.2 packages (an
impatiently-smashed-together backport based on the upstream
sources) and then upgraded to 0.48-1ubuntu1 (the packages from
quantal rebuilt on precise). So my situation may be a bit special.
When I upgraded from 0.47.2 to 0.48, I didn't notice that my first
monitor daemon hadn't restarted properly. I rolled through the upgrade
and ended up with a system where "ceph -s" would hang, being unable to
find a monitor willing to accept responsibility for the cluster. I
splashed around rather a lot turning on debug logging. The monitors
tended to get as far as
2012-07-17 02:38:52.254856 7f3c3b862780 -1 auth: error reading file:
/srv/ceph/mon.leningradskaya/keyring: can't open
/srv/ceph/mon.leningradskaya/keyring: (2) No such file or directory
2012-07-17 02:38:52.254874 7f3c3b862780 -1 mon.leningradskaya@-1(probing) e1
unable to load initial keyring
/etc/ceph/ceph.keyring,/etc/ceph/keyring,/etc/ceph/keyring.bin
2012-07-17 02:38:53.006423 7f3c3b860700 1 -- 10.55.200.21:6789/0 >> :/0
pipe(0x7f3c2c0008c0 sd=17 pgs=0 cs=0 l=0).accept sd=17
2012-07-17 02:38:53.231137 7f3c386a1700 1 -- 10.55.200.21:6789/0 >> :/0
pipe(0x7f3c2c000f60 sd=18 pgs=0 cs=0 l=0).accept sd=18
2012-07-17 02:38:53.308857 7f3c3849f700 1 -- 10.55.200.21:6789/0 >> :/0
pipe(0x7f3c2c0015c0 sd=19 pgs=0 cs=0 l=0).accept sd=19
2012-07-17 02:38:53.668990 7f3c3829d700 1 -- 10.55.200.21:6789/0 >> :/0
pipe(0x7f3c2c001c20 sd=20 pgs=0 cs=0 l=0).accept sd=20
with lines like the last four streaming endlessly. Eventually I
tried creating an empty /srv/ceph/mon.leningradskaya/keyring and
the monitor daemon started right up. When I applied the same
change to the rest of the cluster, I was back in business. Here's
a log snippet from a successful 0.48 monitor daemon startup:
2012-07-17 02:47:03.036077 7f5f2a66f780 2 auth: KeyRing::load: loaded key file
/srv/ceph/mon.leningradskaya/keyring
2012-07-17 02:47:03.036283 7f5f2a66f780 10 mon.leningradskaya@-1(probing) e1
bootstrap
2012-07-17 02:47:03.036319 7f5f2a66f780 10 mon.leningradskaya@-1(probing) e1
unregister_cluster_logger - not registered
2012-07-17 02:47:03.036346 7f5f2a66f780 10 mon.leningradskaya@-1(probing) e1
cancel_probe_timeout (none scheduled)
2012-07-17 02:47:03.036383 7f5f2a66f780 0 mon.leningradskaya@-1(probing) e1
my rank is now 1 (was -1)
continuing to log more besides as the cluster came back up.
One of my colleagues tried something similar, but his monitor
daemons came up like so:
2012-07-19 10:16:10.223092 7f9e20d22780 -1 auth: error reading file:
/var/lib/ceph/mon/ceph-a/keyring: can't open /var/lib/ceph/mon/ceph-a/keyring:
(2) No such file or directory
2012-07-19 10:16:10.235911 7f9e20d22780 1 mon.a@-1(probing) e1 copying mon. key
from old db to external keyring
which is a little different -- is this "old db" something I should
have ended up with after a regular no-cephx mkcephfs deployment?
And also, I ran the various mkcephfs steps individually to avoid
having ssh across the whole cluster, so perhaps something fell
through the cracks there...
Here's my ceph.conf, minus tedious OSD boilerplate:
[global]
max open files = 131072
log file = /var/log/ceph/$name.log
pid file = /run/ceph/$name.pid
[mon]
mon data = /srv/ceph/$name
[mon.prat]
host = prat
mon addr = 10.55.200.22:6789
[mon.jackass]
host = jackass
mon addr = 10.55.200.20:6789
[mon.leningradskaya]
host = leningradskaya
mon addr = 10.55.200.21:6789
Regards,
--
Paul Collins
Wellington, New Zealand
Dag vijandelijk luchtschip de huismeester is dood
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