Forgot to say we're on Pacific 16.2.13.

On Tue, 11 Jul 2023 at 08:55, Adam Huffman <adam.huffman.li...@gmail.com>
wrote:

> Hello
>
> I'm trying to add MONs in advance of a planned downtime.
>
> This has actually ended up removing an existing MON, which isn't helpful.
>
> The error I'm seeing is:
>
> Invalid argument: /var/lib/ceph/mon/ceph-<hostname>/store.db: does not
> exist (create_if_missing is false)
> error opening mon data directory at '/var/lib/ceph/mon/ceph-<hostname>':
> (22) Invalid argument
>
> It appears that the fsid is being stripped, because the directory was
> there.
> It's now in /var/lib/ceph/<fsid>/removed
>
> This appears to be similar to:
> https://tracker.ceph.com/issues/45167
> which was closed for lack of a reproducer.
>
> The command I ran was:
>
> sudo ceph orch apply mon --placement="comma-separated hostname list"
>
> after running that with "--dry-run".
>
> Would be grateful for some advice here - I wasn't expecting to reduce the
> MON count.
>
> Best Wishes,
> Adam
>
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