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@thehutgroup.com>:
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@thehutgroup.com [THG Ingenuity Logo]<https://www.thg.com> [https://i.imgur.com/wbpVRW6.png]<https://www.linkedin.com/company/thgplc/?originalSubdomain=uk> [https://i.imgur.com/c3040tr.png] <https://twitter.com/thgplc?lang=en> _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io