Hi,
if you just want the cluster to drain this host but bring it back
online soon I would just remove the noout flag:
ceph osd rm-noout osd1
This flag is set when entering maintenance mode (ceph osd add-noout
<HOST>). But it would not remove the health warning (host is in
maintenance) until the host is back. One (potentially dangerous) way
to clear that warning would be to remove the host from the host list
(ceph orch host rm <host>), but this can potentially cause data loss
since the entire host will be removed from the crushmap. So I would
only choose that path after all PGs have been backfilled successfully
and your attempts to bring that host back takes longer than expected.
Maybe there are more options which I haven't thought of, but these two
came to mind.
Regards,
Eugen
Zitat von Bryce Nicholls <Bryce.Nicholls92@xxxxxxxxxxxxxxx>:
Hi
We put a host in maintenance and had issues bringing it back.
Is there a safe way of exiting maintenance while the host is
unreachable / offline?
We would like the cluster to rebalance while we are working to get
this host back online.
Maintenance was set using:
ceph orch host maintenance enter osd1
I tried exiting using:
ceph orch host maintenance exit osd1
but got the below stacktrace.
root@mon1 ~ # ceph orch host maintenance exit osd1
Error EINVAL: Traceback (most recent call last):
File "/usr/share/ceph/mgr/mgr_module.py", line 1756, in _handle_command
return self.handle_command(inbuf, cmd)
File "/usr/share/ceph/mgr/orchestrator/_interface.py", line 171,
in handle_command
return dispatch[cmd['prefix']].call(self, cmd, inbuf)
File "/usr/share/ceph/mgr/mgr_module.py", line 462, in call
return self.func(mgr, **kwargs)
File "/usr/share/ceph/mgr/orchestrator/_interface.py", line 107,
in <lambda>
wrapper_copy = lambda *l_args, **l_kwargs: wrapper(*l_args,
**l_kwargs) # noqa: E731
File "/usr/share/ceph/mgr/orchestrator/_interface.py", line 96, in wrapper
return func(*args, **kwargs)
File "/usr/share/ceph/mgr/orchestrator/module.py", line 455, in
_host_maintenance_exit
raise_if_exception(completion)
File "/usr/share/ceph/mgr/orchestrator/_interface.py", line 225,
in raise_if_exception
e = pickle.loads(c.serialized_exception)
TypeError: __init__() missing 2 required positional arguments:
'hostname' and 'addr'
Thanks
Bryce
Bryce Nicholls
OpenStack Engineer
Bryce.Nicholls92@xxxxxxxxxxxxxxx
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