Munin contributed plugins

#!/bin/bash

#

# Plugin to monitor CPU usage, for a selected set of users

#

# Usage: Place in /etc/munin/node.d/ (or link it there  using ln -s)

#        Add this to your /etc/munin/plugin-conf.d/munin-node:

#		[cpubyuser]

#		env.USERS root yann

#

#        If env.USERS is set to ALL, count all logged in users.

#

#	 root and yann being a list of the users to monitor.

#	 You need to also make sure that awk is installed

#

# 2008-12-08 v 1.3.1 Hanisch Elián:

#				- support for dots in user names.

#				- fix labels

#

# 2008-12-01 v 1.3 Hanisch Elián:

#				- fixes, refactoring and code cleanup

#				- Users that use cpu but aren't in the USERS env var

#				are plotted as "others", set others.graph to 'no' if

#				you	don't want this.

#

# 2008-03-20 v 1.2 fireball:	fixed minor screwup, works now ^^

#

# 2008-01-09 v 1.1 fireball:	fixed "-" in usernames, those get replaced by "_" now.

#				set usernames in config accordingly (that is with _)

#

#

# Parameters understood:

#

#       config   (required)

#       autoconf (optional - used by munin-config)

#

#%# family=auto

#%# capabilities=autoconf

. "$MUNIN_LIBDIR/plugins/plugin.sh"

OTHER_FIELD="others"

[ "$USERS" = "ALL" ] && USERS=$(w --no-header | awk '{ print $1 }' | sort | uniq)

if [ "$1" = "autoconf" ]; then

	if [ -n "$USERS" ]; then

		echo "yes"

	else

		echo "no (USERS setting is missing)"

	fi

	exit

fi

if [ "$1" = "config" ]; then

	echo "graph_args --base 1000 -r --lower-limit 0"

	echo "graph_title CPU usage, by user"

	echo "graph_category system"

	echo "graph_info This graph shows CPU usage, for monitored users."

	echo "graph_vlabel %"

	echo "graph_scale no"

	echo "graph_period second"

	user_fields="$(for user in $USERS; do clean_fieldname "$user" | tr '\n' ' '; done)"

	echo "graph_order $user_fields $OTHER_FIELD"

	for user in $USERS "$OTHER_FIELD"; do

	        user_field="$(clean_fieldname "$user")"

		echo "${user_field}.label $user"

		echo "${user_field}.info CPU used by user $user"

		echo "${user_field}.type GAUGE"

		echo "${user_field}.draw AREASTACK"

	done

	exit

fi

top -b -n 1 | tail -n +8 | \

	awk -v USERS="$USERS" '

		{ if ($2 != "USER") CPU_USER[$2]+=$9 }

		END {

			others_sum = 0

			for (user in CPU_USER) {

				m = match(USERS,user)

				if (m != 0) {

					_user=user

					gsub(/[-.]/,"_", _user);

					print _user".value", CPU_USER[user]

				} else

					others_sum += CPU_USER[user]

			}

		print "others.value", others_sum;

	}'