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Bug #22142

mon doesn't send health status after paxos service is inactive temporarily

Added by Jan Fajerski over 1 year ago. Updated over 1 year ago.

Status:
Resolved
Priority:
Normal
Assignee:
Category:
-
Target version:
-
Start date:
11/16/2017
Due date:
% Done:

0%

Source:
Tags:
Backport:
luminous
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Component(RADOS):
Monitor
Pull request ID:

Description

To reproduce:

#start a vstart cluster
../src/vstart.sh -n -s -d
#start the prometheus module for health status, the dashboard shows the same info
bin/ceph mgr module enable prometheus
# confirm healthy cluster state
curl 192.168.178.4:9283/metrics | grep "ceph_health_status 0.0" 
# kill a mon and wait a bit for status to change
kill `cat out/mon.a.pid`
sleep 1m
# check of health warn
bin/ceph -s
# mgr modules still show healthy
curl 192.168.178.4:9283/metrics | grep "ceph_health_status 1.0" # 1.0 is warn
curl 192.168.178.4:9283/metrics | grep "ceph_health_status 0.0" # 0.0 is healthy

Alternatively check the mgr dashboard (see screenshot).

It seems like sometimes the status propagates correctly, i.e. the dashboard and prometheus module show the WARN state

2017-11-16-132808_1897x943.png View - mgr dashboard with incorrect health status (141 KB) Jan Fajerski, 11/16/2017 12:28 PM


Related issues

Duplicated by mgr - Bug #22511: Dashboard showing stale health data Duplicate 12/20/2017
Copied to RADOS - Backport #22421: mon doesn't send health status after paxos service is inactive temporarily Resolved

History

#1 Updated by Jan Fajerski over 1 year ago

  • Description updated (diff)

#2 Updated by Jan Fajerski over 1 year ago

  • Description updated (diff)

#3 Updated by Jan Fajerski over 1 year ago

mon/MgrMonitor::send_digests() stops the periodic digests if PaxosService goes inactive for a time (say when a MON goes down). Proposed fix coming up.

#4 Updated by Jan Fajerski over 1 year ago

  • Project changed from mgr to RADOS
  • Status changed from New to In Progress
  • Assignee set to Jan Fajerski

#5 Updated by Jan Fajerski over 1 year ago

  • Subject changed from mgr doesn't get health status change to warn when mon goes down to mon doesn't send health status after paxos service is inactive temporarily

#6 Updated by Jan Fajerski over 1 year ago

  • Status changed from In Progress to Need Review

#7 Updated by Sage Weil over 1 year ago

  • Backport set to luminous

#8 Updated by Kefu Chai over 1 year ago

  • Status changed from Need Review to Pending Backport
  • Component(RADOS) Monitor added

#9 Updated by Jan Fajerski over 1 year ago

  • Copied to Backport #22421: mon doesn't send health status after paxos service is inactive temporarily added

#10 Updated by John Spray over 1 year ago

  • Duplicated by Bug #22511: Dashboard showing stale health data added

#11 Updated by John Spray over 1 year ago

  • Status changed from Pending Backport to Resolved

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