Added munin plugins for OpenBSD.

munin/files/plugins/load

@@ -0,0 +1,127 @@
+#!/bin/sh
+# 
+# Plugin to monitor the load average on a system.
+#
+# Usage: Link or copy into /etc/munin/node.d/
+#
+# Magic markers (optional - only used by munin-config and some
+# installation scripts):
+#
+# $Log$
+# Revision 1.3.2.1  2005/01/28 14:51:22  lupe
+# Add graph_info and some filed.info
+#
+# Revision 1.4  2005/01/28 14:47:31  lupe
+# Add graph_info and some filed.info
+#
+# Revision 1.3  2004/05/20 19:02:36  jimmyo
+# Set categories on a bunch of plugins
+#
+# Revision 1.2  2004/01/15 16:58:10  jimmyo
+# FreeBSD-plugin load bugfix from Robert Lindgren (SF#865928).
+#
+# Revision 1.1  2004/01/02 18:50:00  jimmyo
+# Renamed occurrances of lrrd -> munin
+#
+# Revision 1.1.1.1  2004/01/02 15:18:07  jimmyo
+# Import of LRRD CVS tree after renaming to Munin
+#
+# Revision 1.3  2003/11/07 17:43:16  jimmyo
+# Cleanups and log entries
+#
+#
+#
+#%# 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
+    if [ -x /sbin/sysctl ]; then
+        /sbin/sysctl vm.loadavg > /dev/null
+    	if [ $? = "0" ]; then
+	    	echo yes
+    		exit 0
+    	else
+		    echo no
+		    exit 1
+	    fi
+    else
+        echo no
+        exit 1
+    fi
+fi
+
+# If run with the "config"-parameter, give out information on how the
+# graphs should look. 
+ 
+if [ "$1" = "config" ]; then
+	# 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 Load average'
+	# 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 load'
+	# We want Cur/Min/Avg/Max unscaled (i.e. 0.42 load instead of
+	# 420 milliload)
+	echo 'graph_noscale true'
+	# The category of the plugin. Defaults to "other".
+	echo 'graph_category system'
+	# The fields. "label" is used in the legend. "label" is the only
+	# required subfield. 
+	echo 'load.label load'
+	# These two are optional. They are only used if you have
+	# configured your munin to tell a Nagios-server about any
+	# problems
+	echo 'load.warning 10'
+	echo 'load.critical 120'
+	# This one is purely to add an explanation to the web page. The first
+	# one is for the graph itself, while the second one is for the field
+	# "load".
+	echo 'graph_info The load average of the machine describes how many processes are in the run-queue (scheduled to run "immediately").'
+	echo 'load.info Average load for the five minutes.'
+
+	# 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 -n "load.value "
+/sbin/sysctl vm.loadavg | cut -f3 -d' '
+
+# How could this plugin have been written in its simplest form?
+# Something like this:
+#
+# ---------------------
+# #!/bin/sh
+
+#
+# if [ "$1" = "config" ]; then
+
+# 	echo "graph_title Load average"
+#	echo 'graph_args --base 1000 -l 0'
+#	echo 'graph_vlabel load'
+# 	echo "load.label load"
+# 	exit 0
+# fi
+# echo -n "load.value "
+# cut -f1 -d' ' < /proc/loadavg
+# ---------------------
+#
+# Except for the Nagios-warnings (which most people don't have any need
+# for) and things used by installation scripts and munin-config (which
+# you don't need if you don't plan on submitting your plugin to the
+# pacakge), the two versions will work identically.