[ClusterLabs] About the log indicating RA execution

[井上和徳]

Hi all,

We think it is desirable to output the log indicating the start and
finish of RA execution to syslog on the same node. (End users
monitoring the syslog are requesting that the output be on the same
node.)

Currently, the start[1] and finish[2] logs may be output by different
nodes.

Cluster Summary:
  * Stack: corosync
  * Current DC: r81-2 (version 2.0.4-556cef416) - partition with quorum
  * Last updated: Thu Jul  2 12:42:17 2020
  * Last change:  Thu Jul  2 12:42:13 2020 by hacluster via crmd on r81-2
  * 2 nodes configured
  * 3 resource instances configured

Node List:
  * Online: [ r81-1 r81-2 ]

Full List of Resources:
  * dummy1      (ocf::pacemaker:Dummy):  Started r81-1
  * fence1-ipmilan      (stonith:fence_ipmilan):         Started r81-2
  * fence2-ipmilan      (stonith:fence_ipmilan):         Started r81-1

*1
Jul  2 12:42:15 r81-2 pacemaker-controld[18009]:
 notice: Initiating start operation dummy1_start_0 on r81-1
*2
Jul  2 12:42:15 r81-1 pacemaker-controld[10109]:
 notice: Result of start operation for dummy1 on r81-1: ok

As a suggestion,

1) change the following log levels to NOTICE and output the start and
   finish logs to syslog on the node where RA was executed.

Jul 02 12:42:15 r81-1 pacemaker-execd     [10106] (log_execute)
  info: executing - rsc:dummy1 action:start call_id:10
Jul 02 12:42:15 r81-1 pacemaker-execd     [10106] (log_finished)
  info: dummy1 start (call 10, PID 10164) exited with status 0
(execution time 91ms, queue time 0ms)

2) alternatively, change the following log levels to NOTICE and
   output a log indicating the finish at the DC node.

Jul 02 12:42:15 r81-2 pacemaker-controld  [18009] (process_graph_event)
  info: Transition 2 action 7 (dummy1_start_0 on r81-1) confirmed: ok
| rc=0 call-id=10

What do you think about this? (Do you have a better idea?)

Best Regards,
Kazunori INOUE