mirror of
https://github.com/munin-monitoring/contrib.git
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67 lines
1.5 KiB
Bash
Executable File
67 lines
1.5 KiB
Bash
Executable File
#!/bin/bash
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: <<=cut
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=head1 NAME
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minecraft-users-ram_ - monitor ressource usage of a local minecraft server
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=head1 APPLICABLE SYSTEMS
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Every system with a running minecraft server.
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=head1 USAGE
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Symlink this plugin to /etc/munin/plugins/ by adding the TCP port number used
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by the local mincecraft server. Afterwards restart the munin-node.
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Some more instructions: http://wiki.natenom.name/minecraft/munin-plugin
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=head1 AUTHOR
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2011 Natenom
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2017 Leandro Späth
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=head1 MAGIC MARKERS
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#%# family=manual
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#%# capabilities=
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=cut
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LC_LANG=C
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MC_PORT=${0##*_}
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if [ "$1" = "config" ]
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then
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printf 'graph_title Minecraft-Server (Port %s)\n' ${MC_PORT}
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printf 'graph_category games'
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printf 'graph_scale no\n'
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printf 'graph_vlabel Players / RAM / CPU\n'
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printf 'users.label Players\n'
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printf 'ramusage.label RAM usage in GiB\n'
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printf 'cpuusage.label CPU usage\n'
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exit 0
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fi
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PLAYERCOUNT=$(netstat -tn | grep -i ${MC_PORT} | grep ESTABLISHED | wc -l)
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MC_PID=$(netstat -tlpn | grep ${MC_PORT} | sed -n -e '1p' | awk '{ print $7 }' | cut -d'/' -f1)
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if [ ! -z "${MC_PID}" ]
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then #is running
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MEMORYRSS=$(ps -p ${MC_PID} -o rss | cut -d'
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' -f2)
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MEMGiB=$(echo "scale=2;${MEMORYRSS}/1024/1024" | bc -l)
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CPUPERCENT=$(top -bp ${MC_PID} -n 1 | sed -n '$p' | tr -s ' ' | cut -d ' ' -f10)
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CPU=$(echo "scale=2;${CPUPERCENT}/100" | bc -l)
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else
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MEMGiB=0
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CPU=0
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fi
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printf "users.value %i\n" "${PLAYERCOUNT}"
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printf "ramusage.value %3.2f\n" "${MEMGiB}"
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printf "cpuusage.value %3.2f\n" "${CPU}"
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