Ceph » mgr

zabbix plugin sends incorrect cluster status to zabbix server.

ceph -s shows cluster in WARNING state:
root@ocata-ceph-node4:~# ceph -s
cluster:
id: c11fa860-98ee-4dd2-9243-1788f7ee2364
health: HEALTH_WARN
1 osds down
1 host (1 osds) down
Degraded data redundancy: 830/2490 objects degraded (33.333%), 44 pgs unclean, 44 pgs degraded, 44 pgs undersized
too few PGs per OSD (22 < min 30)

services:
    mon: 3 daemons, quorum ocata-ceph-node2,ocata-ceph-node1,ocata-ceph-node3
    mgr: ocata-ceph-node1(active), standbys: ocata-ceph-node3, ocata-ceph-node2
    mds: cephfs-1/1/1 up  {0=ocata-ceph-node1=up:active}, 2 up:standby
    osd: 4 osds: 3 up, 4 in
    rgw: 1 daemon active

data:
    pools:   7 pools, 44 pgs
    objects: 830 objects, 978 MB
    usage:   13036 MB used, 69503 MB / 82539 MB avail
    pgs:     830/2490 objects degraded (33.333%)
             44 active+undersized+degraded

from tcpdump between zabbix client and server: {"host":"ocata-ceph-node1","key":"ceph.overall_status","value":"HEALTH_OK"}

issue disappears when active mgr is restarted.
running ceph 12.2.1-1~bpo90+1 on debian stretch

traces attached.

zabbix plugin configuration:
root@ocata-ceph-node1:~# ceph zabbix config-show {"zabbix_port": 10051, "zabbix_host": "192.168.10.9", "identifier": "ocata-ceph-node1", "zabbix_sender": "/usr/bin/zabbix_sender", "interval": 60}