[ceph-users] CEPH Cluster mon is out of quorum

13 Nov 2023

      Dear Concern
I am observing a mon is out of quorum. The current running version of Ceph
is octopus.

Total Node in the cluster: 13
Mon: 3/3
Network: 20G(10Gx 2) bonded link
Each node capacity: 512GB RAM + 72 Core CPU

root@ceph6:/var/run/ceph# systemctl status ceph-mon@ceph6.service
â— ceph-mon@ceph6.service - Ceph cluster monitor daemon
   Loaded: loaded (/lib/systemd/system/ceph-mon@.service; indirect; vendor
preset: enabled)
   Active: active (running) since Mon 2023-11-13 14:18:28 +06; 55min ago
 Main PID: 165299 (ceph-mon)
    Tasks: 26
   CGroup: /system.slice/system-ceph\x2dmon.slice/ceph-mon@ceph6.service
           â””â”€165299 /usr/bin/ceph-mon -f --cluster ceph --id ceph6
--setuser ceph --setgroup ceph

Nov 13 15:13:09 ceph6.bol-online.com ceph-mon[165299]:
2023-11-13T15:13:09.190+0600 7f7855600700 -1 mon.ceph6@2(probing) e6
get_health_metrics reporting 8 slow ops, oldest is log(1 entries from seq 1
at 2023-11-13T14:27:42.428071+0600)
Nov 13 15:13:14 ceph6.bol-online.com ceph-mon[165299]:
2023-11-13T15:13:14.190+0600 7f7855600700 -1 mon.ceph6@2(probing) e6
get_health_metrics reporting 8 slow ops, oldest is log(1 entries from seq 1
at 2023-11-13T14:27:42.428071+0600)
Nov 13 15:13:34 ceph6.bol-online.com ceph-mon[165299]:
2023-11-13T15:13:34.190+0600 7f7855600700 -1 mon.ceph6@2(probing) e6
get_health_metrics reporting 8 slow ops, oldest is log(1 entries from seq 1
at 2023-11-13T14:27:42.428071+0600)
Nov 13 15:13:39 ceph6.bol-online.com ceph-mon[165299]:
2023-11-13T15:13:39.191+0600 7

root@ceph6:/var/run/ceph# ceph -s
  cluster:
    id:     f8096ec7-51db-4557-85e6-57d7fdfe9423
    health: HEALTH_WARN
            1/3 mons down, quorum ceph2,mon1
            nodeep-scrub flag(s) set
            614 pgs not deep-scrubbed in time

  services:
    mon:     3 daemons, quorum ceph2,mon1 (age 8h), out of quorum: ceph6
    mgr:     ceph4(active, since 2w), standbys: mon1, ceph3, ceph1, ceph6
    mds:     cephfs:1 {0=ceph8=up:active} 1 up:standby
    osd:     107 osds: 102 up (since 3h), 102 in (since 3h); 24 remapped pgs
             flags nodeep-scrub
    rgw:     4 daemons active (ceph10.rgw0, ceph7.rgw0, ceph9.rgw0,
mon1.rgw0)
    rgw-nfs: 2 daemons active (ceph7, ceph9)

root@ceph6:/var/run/ceph# ceph daemon mon.ceph6 mon_status
{
    "name": "ceph6",
    "rank": 2,
    "state": "probing",
    "election_epoch": 0,
    "quorum": [],
    "features": {
        "required_con": "2449958747315978244",
        "required_mon": [
            "kraken",
            "luminous",

Total 3 mon in the cluster and all addresses are able to ping and telnet
between them.

   1. mon1: 10.10.10.71
   2. ceph2: 10.10.10.52
   3. ceph6: 10.10.10.56

Regards
Mosharaf Hossain
Manager, Product Development
IT Division

Bangladesh Export Import Company Ltd.

Level-8, SAM Tower, Plot #4, Road #22, Gulshan-1, Dhaka-1212,Bangladesh

Tel: +880 9609 000 999, +880 2 5881 5559, Ext: 14191, Fax: +880 2 9895757

Cell: +8801787680828, Email: mosharaf.hossain@bol-online.com, Web:
www.bol-online.com
<https://www.google.com/url?q=http://www.bol-online.com&sa=D&source=hangouts&ust=1557908951423000&usg=AFQjCNGMxIuHSHsD3qO6y5JddpEZ0S592A>