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Review of category processes, system, snmp

plugins/user/cpubyuser

@@ -0,0 +1,105 @@
+#!/bin/sh
+#
+# 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 [ "$1" = "config" ]; then
+	echo "graph_args --base 1000 -r --lower-limit 0"
+	echo "graph_title CPU usage, by user"
+	echo "graph_category cpu"
+	echo "graph_info This graph shows CPU usage, for monitored users."
+	echo "graph_vlabel %"
+	echo "graph_scale no"
+	echo "graph_period second"
+	user_fields="$(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 "${user_field}.draw AREASTACK"
+	done
+	exit
+fi
+
+top -b -n 1 | sed '1,/^ *PID /d' | \
+	awk -v USERS="$USERS" '
+		# Store the CPU usage of each process - the mapping to the
+		# user happens later. We cannot use the second column
+		# (username) directly, since it may be abbreviated (ending
+		# with "+").
+		{ CPU_PER_PID[$1]=$9 }
+		END {
+			split(USERS, user_array)
+			for (user_index in user_array) {
+				user = user_array[user_index]
+				# retrieve all process IDs belonging to the user
+				"ps -u "user" -o pid --no-headers 2>/dev/null | tr \"\n\" \" \"" | getline pids
+				user_cpu = 0
+				split(pids, pid_array)
+				# summarize the cpu usage of this usage
+				for (pid_index in pid_array) {
+					pid = pid_array[pid_index]
+					user_cpu += CPU_PER_PID[pid]
+					delete CPU_PER_PID[pid]
+				}
+				print user, user_cpu
+			}
+			# add all remaining cpu usages into "others"
+			others_sum = 0
+			for (other_usage in CPU_PER_PID) others_sum+=CPU_PER_PID[other_usage]
+			print "'"$OTHER_FIELD"'", others_sum;
+		}' | while read -r user count; do
+			# apply fieldname cleanup
+			echo "$(clean_fieldname "$user").value $count"
+		done

plugins/user/multipsu

@@ -0,0 +1,45 @@
+#!/bin/bash
+#
+# Script to monitor number of processes by user. Programs are configured
+# in /etc/munin/plugin-conf.d/munin-node
+#
+# Parameters:
+#
+# 	config   (required)
+# 	autoconf (optional - used by lrrd-config)
+#
+# Configuration example
+#
+# [multipsu]
+# env.multipsunames root exim ftp 
+# 
+#
+# Magic markers (optional):
+#%# family=manual
+#%# capabilities=autoconf
+
+if [ "$1" = "autoconf" ]; then
+        if [ -z "$multipsunames" ]; then
+            echo "Configuration required $multipsunames"
+        else
+            echo yes
+        fi
+	exit 0
+fi	  
+
+if [ "$1" = "config" ]; then
+
+	echo graph_title Number of selected processes
+	echo 'graph_category processes'
+	echo 'graph_args --base 1000 --vertical-label processes -l 0'
+	for name in $multipsunames; do
+		echo "$name.label $name"
+		echo "$name.draw LINE2"
+	done
+	exit 0
+fi
+
+for name in $multipsunames; do
+	printf "$name.value "
+	(pgrep -u "$name"; pgrep -U "$name") | sort -u | wc -l
+done

plugins/user/proc_mem_by_user

@@ -0,0 +1,66 @@
+#!/bin/sh
+#
+# (c) 2015, Raphaël Droz <raphael.droz@gmail.com>
+# (c) 2014, Gilles Fauvie <gfauvie@opendbteam.com>
+# Based on the 'du_multidirs' plugin, written by Christian Kujau <lists@nerdbynature.de>
+#
+# Configure it by using the processes env var, i.e.:
+#
+# WARNING: SELINUX can block this plugin
+#
+# [proc_mem_by_user]
+# env.users     munin-node         jprod
+#
+# see bug:
+# http://munin-monitoring.org/ticket/921
+# /usr/share/munin/plugins/plugin.sh (clean_fieldname())
+
+. "$MUNIN_LIBDIR/plugins/plugin.sh"
+users=${users:-munin-node}
+
+
+if [ "$1" = autoconf ]; then
+    ok=1
+    [ -z "$users" ] && ok=0
+
+    for user in $users; do
+	ps u -U "$user" 1> /dev/null 2>&1 || ok=0
+    done
+
+    if [ $ok = 1 ]; then echo yes
+    else echo no; fi
+    exit 0
+fi
+
+if [ "$1" = config ]; then
+    cat <<EOF
+graph_title Memory usage by process by user
+graph_args --base 1024 -l 0
+graph_vlabel Bytes
+graph_category memory
+graph_info This graph shows the memory usage of several processes of one user
+graph_order $(echo "$users"|sed 's/\broot\b/__root/g')
+EOF
+
+    for user in $users; do
+	munin_safe_name=$(clean_fieldname "$user")
+	cat<<EOF
+$munin_safe_name.label $user
+$munin_safe_name.info $user
+$munin_safe_name.min 0
+$munin_safe_name.draw LINESTACK2
+$munin_safe_name.type GAUGE
+EOF
+    done
+
+    #       echo "$u".warning 0
+    #       echo "$u".critical 0
+
+    exit 0
+fi
+
+for user in $users; do
+    munin_safe_name=$(clean_fieldname "$user")
+    sum=$(ps u -U "$user" | awk 'BEGIN { sum = 0 } NR > 1 { sum += $6 }; END { print sum * 1024 }')
+    echo "$munin_safe_name.value ${sum:-U}"
+done