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https://github.com/novatiq/packages.git
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Florian Eckert
1fd3f85d4f
If mwan3track will not stop immediately after sending the kill signal, the clean_up handler will delete the pid file later while the new mwan3track is already running. This could result in a situation that mwan3track is running more then once because the old mwan3track service could not be killed, because the pid file is missing. Using pgrep to kill all mwan3track for the tracked interface and not using pid file should fix this issue. Signed-off-by: Florian Eckert <fe@dev.tdt.de>
129 lines
2.9 KiB
Bash
Executable File
129 lines
2.9 KiB
Bash
Executable File
#!/bin/sh
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. /lib/functions.sh
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LOG="/usr/bin/logger -t $(basename "$0")[$$] -p"
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INTERFACE=""
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DEVICE=""
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IFDOWN_EVENT=0
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clean_up() {
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$LOG notice "Stopping mwan3track for interface \"${INTERFACE}\""
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if [ "$(pgrep -f "mwan3track ${INTERFACE}")" = "" ]; then
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rm -rf "/var/run/mwan3track/${INTERFACE}" &> /dev/null
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fi
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if [ -z "$(ls -A "/var/run/mwan3track")" ]; then
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rm -rf "/var/run/mwan3track"
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fi
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exit 0
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}
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if_down() {
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$LOG info "Detect ifdown event on interface ${INTERFACE} (${DEVICE})"
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IFDOWN_EVENT=1
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}
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main() {
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local reliability count timeout interval failure_interval
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local recovery_interval down up size
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[ -z "$3" ] && echo "Error: should not be started manually" && exit 0
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INTERFACE=$1
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DEVICE=$2
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mkdir -p /var/run/mwan3track/$1
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trap clean_up SIGINT SIGTERM
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trap if_down SIGUSR1
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config_load mwan3
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config_get reliability $1 reliability 1
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config_get count $1 count 1
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config_get timeout $1 timeout 4
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config_get interval $1 interval 10
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config_get down $1 down 5
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config_get up $1 up 5
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config_get size $1 size 56
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config_get failure_interval $1 failure_interval $interval
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config_get recovery_interval $1 recovery_interval $interval
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local score=$(($down+$up))
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local track_ips=$(echo $* | cut -d ' ' -f 3-99)
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local host_up_count=0
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local lost=0
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local sleep_time=0
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local turn=0
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echo "offline" > /var/run/mwan3track/$1/STATUS
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while true; do
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sleep_time=$interval
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for track_ip in $track_ips; do
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ping -I $2 -c $count -W $timeout -s $size -q $track_ip &> /dev/null
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if [ $? -eq 0 ]; then
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let host_up_count++
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echo "up" > /var/run/mwan3track/$1/TRACK_${track_ip}
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else
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let lost++
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echo "down" > /var/run/mwan3track/$1/TRACK_${track_ip}
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fi
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done
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if [ $host_up_count -lt $reliability ]; then
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let score--
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if [ $score -lt $up ]; then
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score=0
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else
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sleep_time=$failure_interval
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fi
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if [ $score -eq $up ]; then
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echo "offline" > /var/run/mwan3track/$1/STATUS
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$LOG notice "Interface $1 ($2) is offline"
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env -i ACTION=ifdown INTERFACE=$1 DEVICE=$2 /sbin/hotplug-call iface
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score=0
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fi
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else
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if [ $score -lt $(($down+$up)) ] && [ $lost -gt 0 ]; then
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$LOG info "Lost $(($lost*$count)) ping(s) on interface $1 ($2)"
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fi
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let score++
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lost=0
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if [ $score -gt $up ]; then
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echo "online" > /var/run/mwan3track/$1/STATUS
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score=$(($down+$up))
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elif [ $score -le $up ]; then
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sleep_time=$recovery_interval
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fi
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if [ $score -eq $up ]; then
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$LOG notice "Interface $1 ($2) is online"
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env -i ACTION=ifup INTERFACE=$1 DEVICE=$2 /sbin/hotplug-call iface
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rm -rf "/var/run/mwan3track/${1}" &> /dev/null
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exit 0
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fi
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fi
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let turn++
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echo "${lost}" > /var/run/mwan3track/$1/LOST
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echo "${score}" > /var/run/mwan3track/$1/SCORE
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echo "${turn}" > /var/run/mwan3track/$1/TURN
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host_up_count=0
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sleep "${sleep_time}" &
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wait
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if [ "${IFDOWN_EVENT}" -eq 1 ]; then
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score=0
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echo "offline" > /var/run/mwan3track/$1/STATUS
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IFDOWN_EVENT=0
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fi
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done
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}
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main "$@"
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