wireguard watchdog script

wg-watchdog.sh

#!/bin/bash

tries=0
while [[ $tries -lt 3 ]]
do
        if /bin/ping -c 1 10.200.200.1
        then
#               echo "wg working"
                logger -n winterfell -i -t "wg-watchdog" -p user.notice "wireguard working"
                exit 0
        fi
##      echo "wg fail"
        tries=$((tries+1))
done
#echo "restarting wg"
sudo systemctl restart wg-quick@wg0
logger -n winterfell -i -t "wg-watchdog" -p user.notice "wireguard restarted"

#crontab entry
#*/15 * * * * /home/mkasun/bin/wg-watchdog.sh

I am surprised we need to do that :(

This is my version of the script:

#!/bin/sh

set -e
set -u
#set -x

wg_server=1.2.3.4


if ping -c 3 "${wg_server}"; then
        echo "ok" > /tmp/wg-watchdog.txt
else
        echo "reboot" > /tmp/wg-watchdog.txt
        systemctl restart [email protected]
fi

exit 0

I have a one-liner in cron
*/1 * * * * root if ! /bin/ping -c 1 10.10.10.11; then systemctl restart wg-quick@wg9; fi