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32 lines
700 B
Bash
Executable File
32 lines
700 B
Bash
Executable File
#!/bin/sh
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# munin plugin to show number of online network hosts on a subnet (needs fping)
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# link with subnet name as suffix like _192.168.1
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# will most likely need a custom timeout setting in /etc/munin/plugin-conf.d/munin-node
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# for example:
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# [net_hosts_*]
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# timeout 20
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#
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# (c) 2011 jon@jon.bpa.nu
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#%# family=manual
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SUBNET=`echo $0 | cut -d'_' -f3`
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TIMEOUT=50 # ms
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RETRIES=0
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case $1 in
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config)
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cat <<CFG
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graph_title hosts on network $SUBNET.
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graph_vlabel hosts
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graph_category network
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hosts.label hosts
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CFG
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exit 0;;
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esac
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if [ $SUBNET != "" ]; then
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echo "hosts.value `fping -t $TIMEOUT -r $RETRIES -ga \"$SUBNET.0/24\" 2>/dev/null | wc -l`"
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else
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echo "could not get subnet name ($SUBNET)"
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fi
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