91 lines
2.2 KiB
Bash
91 lines
2.2 KiB
Bash
#!/bin/sh
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#
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# Check bandwidth plugin for Nagios
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#
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# Usage: check_bandwidth.sh [-i interface] [-s sleep] [-w warning] [-c critical]
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# -i, --interface Interface name (eth0 by default)
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# -s, --sleep Sleep time between both statistics measures
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# -w, --warning Warning value (KB/s)
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# -c, --critical Critical value (KB/s)
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# -h, --help Display this screen
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#
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# (c) 2014, Benjamin Dos Santos <benjamin.dossantos@gmail.com>
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# https://github.com/bdossantos/nagios-plugins
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#
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while [[ -n "$1" ]]; do
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case $1 in
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--interface | -i)
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interface=$2
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shift
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;;
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--sleep | -s)
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sleep=$2
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shift
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;;
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--warning | -w)
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warning=$2
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shift
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;;
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--critical | -c)
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critical=$2
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shift
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;;
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--help | -h)
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sed -n '2,11p' "$0" | tr -d '#'
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exit 3
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;;
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*)
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echo "Unknown argument: $1"
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exec "$0" --help
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exit 3
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;;
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esac
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shift
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done
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warning=${warning:=5000}
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critical=${critical:=8000}
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interface=${interface:=eth0}
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sleep=${sleep:=1}
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if [[ $warning -ge $critical ]]; then
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echo "UNKNOWN - warning ($warning) can't be greater than critical ($critical)"
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exit 3
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fi
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if [[ ! -f "/sys/class/net/${interface}/statistics/rx_bytes" ]] ||
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[[ ! -f "/sys/class/net/${interface}/statistics/tx_bytes" ]]; then
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echo "CRITICAL - Could not fetch '${interface}' interface statistics"
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exit 2
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fi
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rx1=$(cat "/sys/class/net/${interface}/statistics/rx_bytes")
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tx1=$(cat "/sys/class/net/${interface}/statistics/tx_bytes")
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sleep "$sleep"
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rx2=$(cat "/sys/class/net/${interface}/statistics/rx_bytes")
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tx2=$(cat "/sys/class/net/${interface}/statistics/tx_bytes")
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tx_bps=$((tx2 - tx1))
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rx_bps=$((rx2 - rx1))
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tx_kbps=$((tx_bps / 1024))
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rx_kbps=$((rx_bps / 1024))
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status="tx ${interface}: $tx_kbps kb/s, rx ${interface}: $rx_kbps kb/s | tx=$tx_kbps rx=$rx_kbps"
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if [[ $rx_kbps -ge $warning ]] || [[ $tx_kbps -ge $warning ]]; then
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if [[ $rx_kbps -ge $critical ]] || [[ $tx_kbps -ge $critical ]]; then
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exit_status=2
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echo "CRITICAL - $status"
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else
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exit_status=1
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echo "WARNING - $status"
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fi
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else
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exit_status=0
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echo "OK - $status"
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fi
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exit ${exit_status:=3}
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