Proxmox 5.4-13 pveceph mon create failing when hostname is long

M

Marcin Kubica

Member
Feb 13, 2019
21
0
6
Hi

Proxmox 5.4-13 - stock debian stretch

Not sure if this is a known issue, been trying to google in vain.

The moment I have hostname longer than 31 characters pveceph mon create will fail. The fun bit is, it can continue popping the error forever, but when I cancel and start mon service it's working ok.

Another thing to point out is, during [Errno 2] if I use another console session and start the ceph-mon service it will finish properly.

Code: 
root@some-hostname-longer-than-31-chars:~# pveceph mon create
creating /etc/pve/priv/ceph.client.admin.keyring
monmaptool: monmap file /tmp/monmap
monmaptool: generated fsid 154a575c-b6c3-42b3-9a8c-2b941922a10a
epoch 0
fsid 154a575c-b6c3-42b3-9a8c-2b941922a10a
last_changed 2020-02-21 13:25:00.575531
created 2020-02-21 13:25:00.575531
0: 10.0.0.203:6789/0 mon.some-hostname-longer-than-31-chars
monmaptool: writing epoch 0 to /tmp/monmap (1 monitors)
Created symlink /etc/systemd/system/ceph-mon.target.wants/ceph-mon@some-hostname-longer-than-31-chars.service -> /lib/systemd/system/ceph-mon@.service.
admin_socket: exception getting command descriptions: [Errno 2] No such file or directory
INFO:ceph-create-keys:ceph-mon admin socket not ready yet.
admin_socket: exception getting command descriptions: [Errno 2] No such file or directory
INFO:ceph-create-keys:ceph-mon admin socket not ready yet.
admin_socket: exception getting command descriptions: [Errno 2] No such file or directory
INFO:ceph-create-keys:ceph-mon admin socket not ready yet.
admin_socket: exception getting command descriptions: [Errno 2] No such file or directory
INFO:ceph-create-keys:ceph-mon admin socket not ready yet.
admin_socket: exception getting command descriptions: [Errno 2] No such file or directory
INFO:ceph-create-keys:ceph-mon admin socket not ready yet.
admin_socket: exception getting command descriptions: [Errno 2] No such file or directory
INFO:ceph-create-keys:ceph-mon admin socket not ready yet.
admin_socket: exception getting command descriptions: [Errno 2] No such file or directory
INFO:ceph-create-keys:ceph-mon admin socket not ready yet.
admin_socket: exception getting command descriptions: [Errno 2] No such file or directory
INFO:ceph-create-keys:ceph-mon admin socket not ready yet.
admin_socket: exception getting command descriptions: [Errno 2] No such file or directory
INFO:ceph-create-keys:ceph-mon admin socket not ready yet.
admin_socket: exception getting command descriptions: [Errno 2] No such file or directory
INFO:ceph-create-keys:ceph-mon admin socket not ready yet.
^Creceived interrupt
 
Last edited:
The upper limit seems to be 32 characters. Anything above results in no MON being added to the monmap. You may want to report this upstream [0] or on the mailing list [1] if you want to have a bigger limit. But it is unusual to have such a long hostname, I guess that is why it hasn't been noticed yet.

[0] https://tracker.ceph.com/projects/ceph
[1] https://lists.ceph.io/postorius/lists/
 
Thanks @Alwin

Is this really ceph issue? I know of ceph deployments off-proxmox and they work well with long hostnames of even 50 characters long.
You sure this is not pveceph wrapper / perl lib?

Best
Marcin
 
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