mirror of
https://github.com/munin-monitoring/contrib.git
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65 lines
1.7 KiB
Bash
Executable File
65 lines
1.7 KiB
Bash
Executable File
#!/bin/bash
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# probably will run with sh
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# Plugin to monitor traffic rate to specific host.
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#
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# Requirements:
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# - tcpdump
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# - should be run as root or any other user for tcpdump
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#
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# Parameters supported:
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#
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# config
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#
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# Configurable variables
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#
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# type - monitor type. Available values: packets, bytes. Defaults to packets because it's faster
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# hostname - mandatory. Hostname (ip) to monitor connections to. Actually just a part of tcpdump expr
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#
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# Revision 0.1 2011/08/06 Artem Sheremet
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if [ -z "$type" ]; then
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type=packets
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fi
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if [ -z "$hostname" ]; then
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echo "Configuration problem"
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exit 1
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fi
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if [ "$1" = "config" ]; then
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echo "graph_title Number of $type to and from $hostname"
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if [ "$type" == "bytes" ]; then
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echo "graph_args --base 1024"
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fi
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echo "graph_category network"
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echo "graph_vlabel $type per second"
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echo "graph_info This plugin shows number of $type within $hostname through the tcp protocol using tcpdump"
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echo "$type.label $type within $hostname"
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exit 0
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fi
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TMP_DIR=/tmp/host_traffic_${hostname}_${type}
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if [ ! -f $TMP_DIR ]; then
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mkdir -p $TMP_DIR
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fi
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if [ -f $TMP_DIR/pid ]; then
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if [ "$type" == "packets" ]; then
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echo packets.value $[`wc -l $TMP_DIR/data | cut -d' ' -f1`/300]
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fi
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kill -TERM `cat $TMP_DIR/pid`
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if [ "$type" == "bytes" ]; then
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gawk -Ftcp '
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BEGIN { total = "U"; } # U = Unknown.
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{ total = total + $2; }
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END { print "bytes.value", total/300; }' $TMP_DIR/data
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fi
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fi
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tcpdump -n -q -t host $hostname >$TMP_DIR/data 2>/dev/null &
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echo $! > $TMP_DIR/pid
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