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contrib-munin/plugins/tcp/tcp-states

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2010-11-11 14:59:12 +01:00
#!/bin/sh
#
# Plugin to monitor TCP states.
#
# Parameters:
#
# config (required)
# autoconf (optional - only used by munin-config)
#
# (C) Marki - count number of connections in each state
# - no LISTEN as we are running netstat without the "-a" option
#
#
# Magic markers (optional - used by munin-config and some installation
# scripts):
#%# family=auto
#%# capabilities=autoconf
if [ "$1" = "autoconf" ]; then
if ( netstat -nt 2>/dev/null >/dev/null ); then
echo yes
exit 0
else
if [ $? -eq 127 ]
then
echo "no (netstat program not found)"
exit 1
else
echo no
exit 1
fi
fi
fi
if [ "$1" = "config" ]; then
echo 'graph_title TCP Connection States'
echo 'graph_args -l 0 --base 1000'
echo 'graph_vlabel connections'
echo 'graph_category network'
echo 'graph_period second'
echo 'graph_info This graph shows the TCP connections states of all the network interfaces combined.'
for i in ESTABLISHED SYN_SENT SYN_RECV FIN_WAIT1 FIN_WAIT2 TIME_WAIT CLOSE CLOSE_WAIT LAST_ACK CLOSING; do
echo "$i.label $i"
echo "$i.type GAUGE"
echo "$i.max 32999"
echo "$i.min 0"
done
exit 0
fi
netstat -nt | awk '/^tcp/ { states[$6]++ } END { for (idx in states) print idx ".value " states[idx] }'