I'm pretty sure it's an asyncssh error. I've never seen the issue, but
seems related. https://github.com/ronf/asyncssh/issues/725


On Fri, Mar 28, 2025, 11:43 Eugen Block <ebl...@nde.ag> wrote:

> Hi,
>
> you can use any pastebin to share verbose logs. I tried to find
> something in the code related to the message (Server not responding to
> keepalive), but couldn't find anything. Maybe it's not Ceph related?
> But I'm also not a dev, so I might just misunderstand.
>
> Zitat von Reid Kelley <r...@drawbridgedigital.com>:
>
> > Setting up a new cluster on fresh ubuntu 24.04 hosts using cephadm. The
> > first 5 hosts all added without issue, but the next N hosts all throw the
> > same error when adding through the dashboard or through ceph orch add...
> > All hosts have ssh access, docker and all base requirements confirmed.
> >
> > Command:
> > ceph orch host add foxtrot 10.1.20.16
> >
> > Error:
> > Error EINVAL: check-host failed:
> > Unable to write
> >
> foxtrot:/var/lib/ceph/260974b7-fbb6-11ef-911a-107c6152e887/cephadm.c6d8d2eb72a60267f2844dd3167700619f1207413db7701f1827abf652e86a11:
> > Server not responding to keepalive
> >
> > There is a long stack trace that references asyncssh and
> > the /lib/python3.9/site-packages/asyncssh/sftp.py file. Happy to share
> but
> > not sure best way in the mailing list.
> >
> > Thanks for any help and advice.
> > -Reid
> >
> > --
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