89 lines
2.0 KiB
Bash
Executable File
89 lines
2.0 KiB
Bash
Executable File
#!/bin/bash
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# (c) 2012 - Bushmills
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# License : GPLv2
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#%# family=auto
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#%# capabilities=autoconf
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interval=1 # mpstat sampling interval
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timeout=1200 # 20 minutes daemon watchdog timeout
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watchdog=60 # test for timeout every $watchdog seconds
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pluginfull="$0" # full name of plugin
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plugin="${0##*/}" # name of plugin
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pidfile="$MUNIN_PLUGSTATE/munin.$plugin.pid"
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cache="$MUNIN_PLUGSTATE/munin.$plugin.value"
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graph="$plugin"
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style="AREA"
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cpus=$(grep -c ^processor /proc/cpuinfo)
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run_watchdog() { # should also trap kill and term signals
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kill -0 $(cat $pidfile) 2> /dev/null || rm -f $pidfile
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}
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run_acquire() {
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echo "$$" > $pidfile
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LANG=C mpstat -P ALL $interval |
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awk -v cpus=$cpus '$2>=0&&$2<99 {print $2, systime(), (100-$11)/cpus; system("");}' >> $cache
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rm -f $pidfile $cache
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}
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run_daemon() {
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run_watchdog
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if [ -f $pidfile ]; then
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touch $pidfile
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else
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$pluginfull acquire &
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fi
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}
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# --------------------------------------------------------------------------
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run_autoconf() {
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run=(yes no)
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type -t mpstat > /dev/null
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echo "${run[$?]}"
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}
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run_config() {
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run_daemon
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cat << EOF
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graph_title $graph
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graph_category 1sec
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graph_vlabel average cpu use %
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graph_scale no
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graph_total All CPUs
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update_rate 1
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graph_data_size custom 1d, 10s for 1w, 1m for 1t, 5m for 1y
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EOF
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cpun=0
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for ((i=0; i<$cpus; i++)); do
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cat << EOF
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cpu${cpun}.label CPU $cpun
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cpu${cpun}.draw $style
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cpu${cpun}.min 0
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EOF
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style=STACK
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((cpun++))
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done
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}
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run_fetch() {
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run_daemon
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awk 'NF==3 {print "cpu" $1 ".value " $2 ":" $3}' $cache
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> $cache
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}
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run_${1:-fetch}
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exit 0
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# export -f functionname export functionname to subshell, avoiding the need
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# for locating plugin for subshell calling, when process needs a different
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# pid. Instead, $SHELL -c functionname can be used. useful for calling
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# acquire which needs a different pid than watchdog, otherwise watchdog
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# could/will kill itself when expiring before the watched process is killed.
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# not a POSIX feature.
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