Merge pull request IQSS#4182 from IQSS/4180-watch_timers

4180 watch timers

doc/sphinx-guides/source/_static/util/check_timer.bash

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+
+# example monitoring script for EBJ timers.
+# currently assumes that there are two timers
+# real monitoring commands should replace the echo statements for production use
+
+r0=`curl -s http://localhost:8080/ejb-timer-service-app/timer`
+
+if [ $? -ne 0 ]; then
+	echo "alert - no timer service" # put real alert command here
+fi
+
+r1=`echo $r0 | grep -c "There are 2 active persistent timers on this container"`
+
+if [ "1" -ne "$r1" ]; then
+	echo "alert - no active timers" # put real alert command here
+fi
+

doc/sphinx-guides/source/admin/monitoring.rst

@@ -9,3 +9,7 @@ In production you'll want to monitor the usual suspects such as CPU, memory, fre
 https://github.com/IQSS/dataverse/issues/2595 contains some information on enabling monitoring of Glassfish, which is disabled by default.
 
 There is a database table called ``actionlogrecord`` that captures events that may be of interest. See https://github.com/IQSS/dataverse/issues/2729 for more discussion around this table.
+
+Should you be interested in monitoring the EJB timers, this script may be used as an example:
+
+.. literalinclude:: ../_static/util/check_timer.bash