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cant get mds services started


ghbiz
76 Posts
March 30, 2024, 3:42 am

MDS services appear to be down and not starting.

see below where it is having an issue with the ${CLUSTER} variable...

 

root@ceph-public1:~# systemctl status ceph-mds@ceph-public1
● ceph-mds@ceph-public1.service - Ceph metadata server daemon
Loaded: loaded (/lib/systemd/system/ceph-mds@.service; disabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Fri 2024-03-29 20:08:41 EDT; 3h 31min ago
Process: 1235714 ExecStart=/usr/bin/ceph-mds -f --cluster ${CLUSTER} --id ceph-public1 --setuser ceph --setgroup ceph (code=exited, status=1/FAILURE)
Main PID: 1235714 (code=exited, status=1/FAILURE)

Mar 29 20:08:41 ceph-public1 systemd[1]: ceph-mds@ceph-public1.service: Service hold-off time over, scheduling restart.
Mar 29 20:08:41 ceph-public1 systemd[1]: ceph-mds@ceph-public1.service: Scheduled restart job, restart counter is at 3.
Mar 29 20:08:41 ceph-public1 systemd[1]: Stopped Ceph metadata server daemon.
Mar 29 20:08:41 ceph-public1 systemd[1]: ceph-mds@ceph-public1.service: Start request repeated too quickly.
Mar 29 20:08:41 ceph-public1 systemd[1]: ceph-mds@ceph-public1.service: Failed with result 'exit-code'.
Mar 29 20:08:41 ceph-public1 systemd[1]: Failed to start Ceph metadata server daemon.
root@ceph-public1:~#

#1

ghbiz
76 Posts
March 30, 2024, 7:15 pm

Magid, i forgot to mention that above is on a 2.8.1 cluster that due to internal reasons are hesitating to migrate to 3.2.1 (latest) as we are working on other issues that are underlining this cluster with regards to iSCSI ...

#2

ghbiz
76 Posts
March 30, 2024, 9:10 pm

as an update. i followed your instructions on following link to recreate the mds services.

 

Forums

 

November 2, 2020, 9:54 pm
Quote

1) can you run
ceph versions

2) Was this a fresh 2.6 install or what was this an older cluster that was upgraded ?

3) Did you try manually to add other mds servers yourself ?

4) Try to re-create the mds servers
on management node:

# edit installed flag
nano /opt/petasan/config/flags/flags.json
change line
"ceph_mds_installed": true
to
"ceph_mds_installed": false

# delete key
ceph auth del mds.HOSTNAME

# recreate mds
/opt/petasan/scripts/create_mds.py

# check if up

systemctl status ceph-mds@HOSTNAME

if it works, do the same on the other 2 management nodes.

#3