#!/bin/sh # -*- sh -*- # # v0.1 - 2024-09-05 # # Plugin installation: # wget "https://pasternok.org/sources/load2_alt.sh?raw" -O /etc/munin/plugins/load2 # chmod +x /etc/munin/plugins/load2 # systemctl restart munin-node : << =cut =head1 NAME load2 - Plugin to monitor the load average on a system. =head1 CONFIGURATION The following environment variables are used by this plugin: =over 4 =item load<int>_warning <float> Threshold for when to report a warning =item load<int>_critical <float> Threshold for when to report a critical =back =head2 EXAMPLE CONFIGURATION [load2] env.load1_warning 5 env.load1_critical 10 =head1 NOTES If run with the "autoconf"-parameter, give our opinion on whether we should be run on this system or not. This is optional, and only used by munin-config. In the case of this plugin, we should most probably always be included. =head1 MAGIC MARKERS #%# family=auto #%# capabilities=autoconf =cut . "$MUNIN_LIBDIR/plugins/plugin.sh" if [ "$1" = "autoconf" ]; then echo yes exit 0 fi # If run with the "config"-parameter, give out information on how the # graphs should look. if [ "$1" = "config" ]; then # The host name this plugin is for. (Can be overridden to have # one machine answer for several) # The title of the graph echo 'graph_title Load average' # Arguments to "rrdtool graph". In this case, tell it that the # lower limit of the graph is '0', and that 1k=1000 (not 1024) echo 'graph_args --base 1000 -l 0' # The Y-axis label echo 'graph_vlabel processes in the run queue' # We want Cur/Min/Avg/Max unscaled (i.e. 0.42 load instead of # 420 milliload) echo 'graph_scale no' # Graph category. Defaults to 'other' echo 'graph_category system' # The fields. "label" is used in the legend. "label" is the only # required subfield. echo 'load1.label 1 minute average' echo 'load5.label 5 minute average' echo 'load15.label 15 minute average' # Visualization config echo 'load1.draw AREA' echo 'load1.min 0' echo 'load1.colour EACC00' echo 'load5.draw LINE2' echo 'load5.min 0' echo 'load5.colour EA8F00' echo 'load15.draw LINE2' echo 'load15.min 0' echo 'load15.colour FF0000' # These two read the environment for warning values for the field # "load<int>". If "load<int>_warning" or "warning" aren't set in the # environment, no warning levels are set. Likewise for "load<int>_critical" # and "critical". for i in 1 5 15 do print_warning load$i print_critical load$i done # This one is purely to add an explanation to the web page. The first # one is for the graph itself, while the other ones are for the fields # "load*". echo 'graph_info The load average of the machine describes how many processes are in the run-queue (scheduled to run "immediately").' echo 'load1.info 1 minute load average' echo 'load5.info 5 minute load average' echo 'load15.info 15 minute load average' # Last, if run with the "config"-parameter, quit here (don't # display any data) exit 0 fi # If not run with any parameters at all (or only unknown ones), do the # real work - i.e. display the data. Almost always this will be # "value" subfield for every data field. loadavg_data=$(cat /proc/loadavg) echo -n "load1.value " echo $loadavg_data | cut -f1 -d' ' echo -n "load5.value " echo $loadavg_data | cut -f2 -d' ' echo -n "load15.value " echo $loadavg_data | cut -f3 -d' '