RickyXwang 2287ee9cc4
Update HealthCheck for auto-recover TUN down (#1373)
* Update tunnelDown.sh

Add attempt to restart TUN
2020-09-29 08:51:34 +09:00

65 lines
1.3 KiB
Bash
Executable File

#!/bin/bash
#Network check
# Ping uses both exit codes 1 and 2. Exit code 2 cannot be used for docker health checks,
# therefore we use this script to catch error code 2
HOST=${HEALTH_CHECK_HOST}
if [[ -z "$HOST" ]]
then
echo "Host not set! Set env 'HEALTH_CHECK_HOST'. For now, using default google.com"
HOST="google.com"
fi
ping -c 1 $HOST
STATUS=$?
if [[ ${STATUS} -ne 0 ]]
then
echo "Network is down"
INTERFACE=$(ls /sys/class/net | grep tun)
ISINTERFACE=$?
if [[ ${ISINTERFACE} -ne 0 ]]
then
echo "TUN Interface not found"
exit 1
fi
echo "Resetting TUN"
ip link set ${INTERFACE} down
sleep 1
ip link set ${INTERFACE} up
echo "Sent kill SIGUSR1 to openvpn"
pkill -SIGUSR1 openvpn
sleep 20
fi
ping -c 1 $HOST
STATUS=$?
if [[ ${STATUS} -ne 0 ]]
then
echo "Network is still down"
exit 1
fi
echo "Network is up"
#Service check
#Expected output is 2 for both checks, 1 for process and 1 for grep
OPENVPN=$(pgrep openvpn | wc -l )
TRANSMISSION=$(pgrep transmission | wc -l)
if [[ ${OPENVPN} -ne 1 ]]
then
echo "Openvpn process not running"
exit 1
fi
if [[ ${TRANSMISSION} -ne 1 ]]
then
echo "transmission-daemon process not running"
exit 1
fi
echo "Openvpn and transmission-daemon processes are running"
exit 0