[ClusterLabs] ocf:pacemaker:ping every X seconds

Rohit Saini rohitsaini111.forum at gmail.com
Fri Oct 9 01:21:55 EDT 2020

Hi Team,
I am using  ocf:pacemaker:ping resource to check aliveness of a machine
every X seconds. As I understand, monitor interval 'Y' will cause ping to
happen every 'Y' seconds. So, for my case, Y should be equal to X?
I do not see this behavior though. I see pings happening every 7 seconds.
1) How is 7 sec coming here?
2) What do I need to do to make ping happen every X seconds.

pcs resource delete rsc1
pcs resource create rsc1 ocf:pacemaker:ping host_list=""
debug=true attempts=3 timeout=200ms
pcs resource update rsc1 op monitor interval=2s

*Pcs config:*
[root at rohit-abc1 ~]# pcs config
Cluster Name: ucc1
Corosync Nodes:
 rohit-abc1 rohit-abc2
Pacemaker Nodes:
 rohit-abc1 rohit-abc2

 Master: ucc1-master
  Meta Attrs: master-node-max=1 clone-max=2 ordered=true master-max=1
notify=true clone-node-max=1
  Resource: ucc1 (class=ocf provider=pw type=uc)
   Attributes: state=/var/run/uc/role
   Operations: demote interval=0 on-fail=restart timeout=20
               monitor interval=10 role=Master timeout=20
               monitor interval=11 role=Slave timeout=20
               promote interval=0 on-fail=restart timeout=20
               start interval=0s timeout=20 (ucc1-start-interval-0s)
               stop interval=0s timeout=20 (ucc1-stop-interval-0s)
 Resource: rsc1 (class=ocf provider=pacemaker type=ping)
  Attributes: attempts=3 debug=true host_list= timeout=200ms
  Operations: monitor interval=2s (rsc1-monitor-interval-2s)
              start interval=0s timeout=60 (rsc1-start-interval-0s)
              stop interval=0s timeout=20 (rsc1-stop-interval-0s)

[root at rohit~]# taillog |grep
2020-10-09T05:16:54.628154+00:00 rohit ping(rsc1)[1721]: WARNING: is inactive
2020-10-09T05:17:01.427983+00:00 rohit ping(rsc1)[1778]: WARNING: is inactive
2020-10-09T05:17:10.194989+00:00 rohit ping(rsc1)[1858]: WARNING: is inactive

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