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