Hi,
the docs [1] cover that part, there's not much to it really. The
easiest way is probably to export the current configuration (and keep
it as backup):
ceph orch ls --export --format yaml > cluster.yml
Make a copy and then edit the yaml file, remove the node from the
placement section(s) and apply the changes.
# Before #
service_type: mon
placement:
hosts:
- host1
- host2
# After #
service_type: mon
placement:
hosts:
- host1
ceph orch apply -i new-cluster.yml
ceph orch host rm host2
Regards,
Eugen
[1] https://docs.ceph.com/en/latest/cephadm/host-management/#removing-hosts
Zitat von mabi <mabi@xxxxxxxxxxxxx>:
Hello,
On my Octopus cluster with 6 nodes (3 mon/mgr, 3 OSD), I would like
to re-install the operating system of the first mon/mgr node. For
that purpose I tried "ceph host rm mynode" but then I got the
following two health warnings:
2 stray daemon(s) not managed by cephadm
1 stray host(s) with 2 daemon(s) not managed by cephadm
So I did not proceed with the re-installation and added the node back.
What would be the correct command in order to do that? I can live
with mon/mgr which are do not have the quorum for the time of the
re-installation. I just need my CephFS to still be available. Right
now there is 2 mon daemons running and 1 active mgr and 2 standby
mgrs.
Thank you,
Mabi
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