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check_mysql_connections

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FileDescription
check_mysql_connectionsCheck script V1.1.1
Checks the number of connections to a mysql server.
Checks the number of connections to a mysql server.

Shell script.
- requires mysqladmin.
- requires bash.
- requires utils.sh from nagios plugins package
Reviews (2)
May I suggest a little patch to support PNP4Nagios? I am quite new at this an I do not know how to do in a different way, so as the patch is very small, I am pasting it here. Hope it can help.

roberto

=====
--- old/check_mysql_connections 2011-06-13 09:41:19.000000000 +0200
+++ new/check_mysql_connections 2011-06-13 09:46:49.000000000 +0200
@@ -14,6 +14,7 @@
# V1.1.0 gs 20060818 user mysqladmin options
# V1.1.1 gs 20070405 fix result calculation
# fix by and thanks to Stephan Helas
+# 20110613 added PNP4nagios support - Roberto Resecco

source /usr/lib/nagios/plugins/utils.sh

@@ -84,15 +85,15 @@
CONNS=$((`mysqladmin $MYSQLOPTS processlist 2>/dev/null|wc -l`-4))

if [ $CONNS -ge $CRIT ]; then
- echo "CRITICAL: $CONNS/$MAXCONNS mysql connections"
+ echo "CRITICAL: $CONNS/$MAXCONNS mysql connections|mysqlConnections=$CONNS"
exit $STATE_CRITICAL
elif [ $CONNS -ge $WARN ]; then
- echo "WARNING: $CONNS/$MAXCONNS mysql connections"
+ echo "WARNING: $CONNS/$MAXCONNS mysql connections|mysqlConnections=$CONNS"
exit $STATE_WARNING
elif [ $CONNS -ge 0 ]; then
- echo "OK: $CONNS/$MAXCONNS mysql connections"
+ echo "OK: $CONNS/$MAXCONNS mysql connections|mysqlConnections=$CONNS"
exit $STATE_OK
else
- echo "UNKNOWN: Cannot determine number of connections"
+ echo "UNKNOWN: Cannot determine number of connections|mysqlConnections=$CONNS"
exit $STATE_UNKNOWN
fi
=======
Been running this plug-in for a year or two now, but didn't notice until today that it wasn't actually sourcing the utils.sh file. I had to add the full path to line 18 "source /usr/local/nagios/libexec/utils.sh". With out this the status is already returned as "OK" but with the Warning, Critical, or OK text.

Now that I have that in place it works like a charm. Probably something I missed when I first started this plugin.