102 lines
2.2 KiB
Bash
Executable File
102 lines
2.2 KiB
Bash
Executable File
#! /bin/sh
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pluginfull="$0" # full name of plugin
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plugin="${0##*/}" # name of plugin
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pidfile="$MUNIN_PLUGSTATE/munin.$plugin.pid"
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cache="$MUNIN_PLUGSTATE/munin.$plugin.value"
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IFACE="${0##*/if1sec_}" # interface
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if [ ! -r "/sys/class/net/$IFACE/statistics/tx_bytes" ]
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then
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echo "# Unknown Interface : $IFACE"
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exit 1
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fi
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if [ "$1" = "acquire" ]
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then
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(
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exec <&- >&- 2>&-
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while sleep 1
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do
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read tx < /sys/class/net/$IFACE/statistics/tx_bytes
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read rx < /sys/class/net/$IFACE/statistics/rx_bytes
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echo "$tx $rx"
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done | awk "{
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now = systime()
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print \"${IFACE}_tx.value \" now \":\" \$1
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print \"${IFACE}_rx.value \" now \":\" \$2
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system(\"\")
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}" >> $cache
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) &
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echo $! > $pidfile
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exit 0
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fi
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if [ "$1" = "config" ]
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then
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cat <<EOF
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graph_title Interface 1sec stats for ${IFACE}
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graph_category network
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graph_data_size custom 1d, 10s for 1w, 1m for 1t, 5m for 450d
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graph_vlabel bits/sec
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update_rate 1
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${IFACE}_tx.label ${IFACE} TX bits
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${IFACE}_tx.cdef ${IFACE}_tx,8,*
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${IFACE}_tx.type DERIVE
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${IFACE}_tx.min 0
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${IFACE}_rx.label ${IFACE} RX bits
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${IFACE}_rx.cdef ${IFACE}_rx,8,*
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${IFACE}_rx.type DERIVE
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${IFACE}_rx.min 0
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EOF
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# If max speed is easily available, report it. More complex
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# code could be copied from "if_".
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if [ -r /sys/class/net/$IFACE/speed ]
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then
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SPEED=$(cat /sys/class/net/$IFACE/speed)
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echo "${IFACE}_rx.max" $((SPEED / 8 * 1000000))
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echo "${IFACE}_tx.max" $((SPEED / 8 * 1000000))
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echo "${IFACE}_rx.info Received traffic on the $IFACE interface. Maximum speed is ${SPEED} Mbps."
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echo "${IFACE}_tx.info Transmitted traffic on the $IFACE interface. Maximum speed ${SPEED} Mbps."
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fi
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exit 0
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fi
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# Autorun logic
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running=true
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if [ ! -e ${cache} ]
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then
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# no cache file
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running=false
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elif [ ! -s ${cache} ]
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then
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# empty cache file
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if [ -s ${pidfile} ]
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then
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# kill -0 will return success if this user is allowed to send
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# a signal to the process. This means the PID exists and
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# belongs to the plugin user, which should have few false
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# positives.
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if ! kill -0 $(cat ${pidfile})
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then
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running=false
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fi
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else
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running=false
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fi
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fi
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if ! $running
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then
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$0 acquire &
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# wait a little so we have some data to report
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sleep 3
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fi
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# Finally: Print collected values, truncate to mark spot.
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cat ${cache}
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> ${cache}
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exit 0
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