Created attachment 1385771 [details]
ceph-version for mon

Description of problem:
The grafana page, ceph cluster -> ceph version Configuration -> MON Version reflects mon version as '-' after reboot of MON node, 

Version-Release number of selected component (if applicable):
[root@dell-r730-030 ceph-ansible]# ceph -v
ceph version 10.2.10-14.el7cp (b05aecbcede52a89a654e9f2bec179c2050ddff6)
[root@dell-r730-030 ceph-ansible]# rpm -qa | grep ansible
ansible-2.4.1.0-1.el7ae.noarch
ceph-ansible-3.0.19-1.el7cp.noarch
cephmetrics-ansible-1.0-8.el7cp.x86_64

How reproducible:
intermittent 

Steps to Reproduce:
1. Deploy a ceph cluster
2. Install cephmetrics as root user
3. reboot a ceph monitor node. 
4. The Mon details on grafana page, ceph cluster -> ceph version Configuration -> MON Version reflects as '-'

Actual results:
MON Version reflects as '-'

Expected results:
After reboot the version should be displayed

Additional info:
[root@dell-r730-030 ceph-ansible]# ceph -s
    cluster 09e3ae32-1a35-4040-954b-373f7230804a
     health HEALTH_OK
     monmap e3: 3 mons at {dell-r730-027=10.9.88.37:6789/0,dell-r730-029=10.9.88.39:6789/0,dell-r730-030=10.9.88.40:6789/0}
            election epoch 24, quorum 0,1,2 dell-r730-027,dell-r730-029,dell-r730-030
      fsmap e5: 1/1/1 up {0=dell-r730-027=up:active}
     osdmap e26: 4 osds: 4 up, 4 in
            flags sortbitwise,require_jewel_osds,recovery_deletes
      pgmap v66: 80 pgs, 3 pools, 2068 bytes data, 20 objects
            431 MB used, 13374 GB / 13374 GB avail
                  80 active+clean