muninlite/munin-node.in

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#!/bin/sh
#
# Simple Bourne Shell script that implements Munin protocoll and
# some common Linux plugins.
#
# For latest version, see http://muninlite.sf.net/
#
# Copyright (c) 2007-2011 Rune Nordb<64>e Skillingstad <rune@skillingstad.no>
#
# Licensed under GPLv2 (see LICENSE file for full License)
#
# $Id: $
#
VERSION="@@VERSION@@"
@@CONF@@
# if plugindir_ is present in $PLUGINS,
# iexecutables (scripts, binaries) matching the following pattern will be scanned and operated as plugins
PLUGINPATTERN=$(dirname $0)"/munin-node-plugin.d/*"
# Remove unwanted plugins from this list
PLUGINS="@@PLUGINS@@"
# ===== LIB FUNCTIONS =====
clean_fieldname() {
echo "$@" | sed -e 's/^[^A-Za-z_]/_/' -e 's/[^A-Za-z0-9_]/_/g'
}
# ===== PLUGINS CODE =====
@@PLSTR@@
# ===== NODE CODE =====
do_list() {
echo $PLUGINS
}
do_nodes() {
echo "$HOSTNAME"
echo "."
}
do_config() {
if echo "$PLUGINS" | grep "\b$1\b" >/dev/null 2>&1; then
config_$1
else
echo "# Unknown service"
fi
echo "."
}
do_fetch() {
if echo "$PLUGINS" | grep "\b$1\b" >/dev/null 2>&1; then
fetch_$1
else
echo "# Unknown service"
fi
echo "."
}
do_version() {
echo "munins node on $HOSTNAME version: $VERSION (munin-lite)"
}
do_quit() {
exit 0
}
# ===== Runtime config =====
RES=""
for PLUG in $PLUGINS
do
if [ "$PLUG" = "if_" ]; then
for INTER in $(grep '^ *\(ppp\|eth\|wlan\|ath\|ra\|ipsec\)\([^:]\)\{1,\}:' /proc/net/dev | cut -f1 -d: | sed 's/ //g');
do
INTERRES=$(echo $INTER | sed 's/\./VLAN/')
RES="$RES if_$INTERRES"
eval "fetch_if_${INTERRES}() { fetch_if $INTER $@; };"
eval "config_if_${INTERRES}() { config_if $INTER $@; };"
done
elif [ "$PLUG" = "if_err_" ]; then
for INTER in $(grep '^ *\(ppp\|eth\|wlan\|ath\|ra\|ipsec\)\([^:]\)\{1,\}:' /proc/net/dev | cut -f1 -d: | sed 's/ //g');
do
INTERRES=$(echo $INTER | sed 's/\./VLAN/')
RES="$RES if_err_$INTERRES"
eval "fetch_if_err_${INTERRES}() { fetch_if_err $INTER $@; };"
eval "config_if_err_${INTERRES}() { config_if_err $INTER $@; };"
done
elif [ "$PLUG" = "netstat" ]; then
if netstat -s >/dev/null 2>&1; then
RES="$RES netstat"
fi
elif [ "$PLUG" = "plugindir_" ]; then
for MYPLUGIN in $(ls -1 $PLUGINPATTERN 2>/dev/null );
do
if [ -f $MYPLUGIN -a -x $MYPLUGIN ]; then
MYPLUGINNAME=$(basename $MYPLUGIN)
#ensure we don't have name collision
if echo "$RES" | grep "\b$MYPLUGINNAME\b" >/dev/null 2>&1 ; then
MYPLUGINNAME="plugindir_$MYPLUGINNAME"
fi
RES="$RES $MYPLUGINNAME"
eval "fetch_${MYPLUGINNAME}() { $MYPLUGIN ; };"
eval "config_${MYPLUGINNAME}() { $MYPLUGIN config ; };"
fi
done
else
RES="$RES $PLUG";
fi
done
PLUGINS=$RES
# ===== MAIN LOOP =====
FUNCTIONS="list nodes config fetch version quit"
HOSTNAME=$(hostname -f 2>/dev/null || hostname)
echo "# munin node at $HOSTNAME"
while read arg0 arg1
do
arg0=$(echo "$arg0" | xargs)
arg1=$(echo "$arg1" | xargs)
if ! echo "$FUNCTIONS" | grep "\b$arg0\b" >/dev/null 2>&1 ; then
echo "# Unknown command. Try" $(echo "$FUNCTIONS" | sed -e 's/\( [[:alpha:]]\{1,\}\)/,\1/g' -e 's/,\( [[:alpha:]]\{1,\}\)$/ or\1/')
continue
fi
do_$arg0 $arg1
done