106 lines
3.0 KiB
Bash
Executable File
106 lines
3.0 KiB
Bash
Executable File
#!/bin/sh
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#
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# Plugin to monitor CPU usage, for a selected set of users
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#
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# Usage: Place in /etc/munin/node.d/ (or link it there using ln -s)
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# Add this to your /etc/munin/plugin-conf.d/munin-node:
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# [cpubyuser]
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# env.USERS root yann
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#
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# If env.USERS is set to ALL, count all logged in users.
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#
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# root and yann being a list of the users to monitor.
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# You need to also make sure that awk is installed
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#
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# 2008-12-08 v 1.3.1 Hanisch Elián:
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# - support for dots in user names.
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# - fix labels
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#
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# 2008-12-01 v 1.3 Hanisch Elián:
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# - fixes, refactoring and code cleanup
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# - Users that use cpu but aren't in the USERS env var
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# are plotted as "others", set others.graph to 'no' if
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# you don't want this.
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#
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# 2008-03-20 v 1.2 fireball: fixed minor screwup, works now ^^
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#
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# 2008-01-09 v 1.1 fireball: fixed "-" in usernames, those get replaced by "_" now.
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# set usernames in config accordingly (that is with _)
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#
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#
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# Parameters understood:
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#
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# config (required)
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# autoconf (optional - used by munin-config)
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#
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#%# family=auto
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#%# capabilities=autoconf
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. "$MUNIN_LIBDIR/plugins/plugin.sh"
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OTHER_FIELD="others"
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[ "$USERS" = "ALL" ] && USERS=$(w --no-header | awk '{ print $1 }' | sort | uniq)
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if [ "$1" = "autoconf" ]; then
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if [ -n "$USERS" ]; then
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echo "yes"
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else
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echo "no (USERS setting is missing)"
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fi
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exit
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fi
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if [ "$1" = "config" ]; then
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echo "graph_args --base 1000 -r --lower-limit 0"
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echo "graph_title CPU usage, by user"
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echo "graph_category cpu"
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echo "graph_info This graph shows CPU usage, for monitored users."
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echo "graph_vlabel %"
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echo "graph_scale no"
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echo "graph_period second"
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user_fields="$(for user in $USERS; do clean_fieldname "$user" | tr '\n' ' '; done)"
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echo "graph_order $user_fields $OTHER_FIELD"
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for user in $USERS "$OTHER_FIELD"; do
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user_field="$(clean_fieldname "$user")"
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echo "${user_field}.label $user"
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echo "${user_field}.info CPU used by user $user"
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echo "${user_field}.type GAUGE"
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echo "${user_field}.draw AREASTACK"
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done
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exit
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fi
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top -b -n 1 | sed '1,/^ *PID /d' | \
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awk -v USERS="$USERS" '
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# Store the CPU usage of each process - the mapping to the
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# user happens later. We cannot use the second column
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# (username) directly, since it may be abbreviated (ending
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# with "+").
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{ CPU_PER_PID[$1]=$9 }
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END {
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split(USERS, user_array)
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for (user_index in user_array) {
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user = user_array[user_index]
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# retrieve all process IDs belonging to the user
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"ps -u "user" -o pid --no-headers 2>/dev/null | tr \"\n\" \" \"" | getline pids
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user_cpu = 0
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split(pids, pid_array)
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# summarize the cpu usage of this usage
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for (pid_index in pid_array) {
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pid = pid_array[pid_index]
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user_cpu += CPU_PER_PID[pid]
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delete CPU_PER_PID[pid]
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}
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print user, user_cpu
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}
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# add all remaining cpu usages into "others"
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others_sum = 0
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for (other_usage in CPU_PER_PID) others_sum+=CPU_PER_PID[other_usage]
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print "'"$OTHER_FIELD"'", others_sum;
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}' | while read -r user count; do
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# apply fieldname cleanup
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echo "$(clean_fieldname "$user").value $count"
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done
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