docker-transmission-openvpn/scripts/healthcheck.sh
clement-z 9317d7f512
Add DNS resolution checks (fix #1608) (#1617)
* Add dns resolution test to healthcheck script

* Add dns resolution test to start script

Co-authored-by: Patrick Kishino <patrick.a.kishino@gmail.com>
2021-01-19 10:37:08 +09:00

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#!/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
# Check DNS resolution works
nslookup $HOST > /dev/null
STATUS=$?
if [[ ${STATUS} -ne 0 ]]
then
echo "DNS resolution failed"
exit 1
fi
ping -c 2 -w 10 $HOST # Get at least 2 responses and timeout after 10 seconds
STATUS=$?
if [[ ${STATUS} -ne 0 ]]
then
echo "Network is down"
exit 1
fi
echo "Network is up"
#Service check
#Expected output is 2 for both checks, 1 for process and 1 for grep
OPENVPN=$(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