Graph the number of connections to RabbitMQ

rabbitmq-connections

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+#!/bin/sh
+# 
+# Plugin to monitor the number of connections to RabbitMQ
+#
+# Usage: Link or copy into /etc/munin/node.d/
+#
+# Parameters
+#     env.conn_warn <warning connections>
+#     env.conn_crit <critical connections>
+#
+# Magic markers (optional - only used by munin-config and some
+# installation scripts):
+#
+#%# family=auto
+#%# capabilities=autoconf
+
+# If run with the "autoconf"-parameter, give our opinion on wether we
+# should be run on this system or not. This is optinal, and only used by
+# munin-config. In the case of this plugin, we should most probably
+# always be included.
+
+if [ "$1" = "autoconf" ]; then
+	echo yes
+	exit 0
+fi
+
+# If run with the "config"-parameter, give out information on how the
+# graphs should look. 
+
+if [ "$1" = "config" ]; then
+        CONN_WARN=${queue_warn:-500}
+        CONN_CRIT=${queue_crit:-1000}
+
+	# The host name this plugin is for. (Can be overridden to have
+	# one machine answer for several)
+
+	# The title of the graph
+	echo 'graph_title RabbitMQ connections'
+	# Arguments to "rrdtool graph". In this case, tell it that the
+	# lower limit of the graph is '0', and that 1k=1000 (not 1024)
+	echo 'graph_args --base 1000 -l 0'
+	# The Y-axis label
+	echo 'graph_vlabel queue_size'
+	# We want Cur/Min/Avg/Max unscaled (i.e. 0.42 load instead of
+	# 420 milliload)
+	#echo 'graph_scale no'
+
+	echo "connections.label Connections"
+	echo "connections.warning $CONN_WARN"
+	echo "connections.critical $CONN_CRIT"
+	echo "connections.info Number of active connections"
+
+	echo 'graph_info Shows the number of connections to RabbitMQ'
+	# Last, if run with the "config"-parameter, quit here (don't
+	# display any data)
+	exit 0
+fi
+
+# If not run with any parameters at all (or only unknown ones), do the
+# real work - i.e. display the data. Almost always this will be
+# "value" subfield for every data field.
+
+echo "connections.value $(rabbitmqctl list_connections | grep -v "^Listing" | grep -v "done.$" | wc -l)"