contrib-munin/plugins/pf/pf_bytes

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#!/bin/sh
#
# OpenBSD's pf(4) monitoring for OpenBSD
# 2007, Originally by Gergely Czuczy <phoemix@harmless.hu>
# for FreeBSD systems. Ported and splitted by the
# immerda admin team admin(at)immerda.ch
# this version is adapted for openbsd and is only tested on
# openbsd systems.
#
# Needs to run as root.
# Add "user root" for the [pf] into plugins.conf.
#
#%# family=auto
#%# capabilities=autoconf
pfctl='/sbin/pfctl'
case $1 in
config)
cat <<EOF
graph_title OpenBSD pf label bytes statistics
graph_vlabel bytes per second
graph_scale no
graph_category network
graph_args -l 0
graph_info OpenBSD's pf label bytes usage statistics
EOF
pfctl -sl | awk '
BEGIN {
total=0
}
{
l=$1;
f_bytes=l;
gsub(/[^a-z0-9A-Z]/, "_", f_bytes);
fields[f_bytes]=l;
total=total+1
}
END {
if ( total == 0 ) exit 0;
for ( k in fields ) print k".label "fields[k]"\n"k".type DERIVE\n"k".min 0"
}'
exit 0
;;
autoconf)
# FreeBSD
ostype=`uname -s`
# OpenBSD
if [ ${ostype} = "OpenBSD" ]; then
# enabled?
if [ `pfctl -si 2>/dev/null | awk '/^Status:/{print $2}'` != "Enabled" ]; then
echo "no (pf(4) is not enabled, consult pfctl(8)"
exit 0
fi
# Other OSes
else
echo "no (this plugin is not supported on your OS)"
exit 0
fi
echo "yes"
exit 0
;;
suggest)
exit 0;
;;
esac
pfctl -sl | awk '
BEGIN {
total=0
}
{
l=$1;
f_bytes=l;
gsub(/[^a-z0-9A-Z]/, "_", f_bytes);
total=total+1;
fields[f_bytes]=fields[f_bytes]+$4;
}
END {
if ( total == 0 ) exit 0;
for ( k in fields ) print k".value "fields[k]
}'