Files
docker-autoheal/docker-entrypoint
T
2017-03-20 12:13:03 -06:00

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#!/usr/bin/env sh
set -e
DOCKER_SOCK=/tmp/docker.sock
if [ "$1" = 'autoheal' ] && [ -e ${DOCKER_SOCK} ]; then
# https://docs.docker.com/engine/api/v1.25/
# Set container selector
if [ "$AUTOHEAL_CONTAINER_LABEL" == "all" ]; then
selector() {
jq -r .[].Id
}
else
selector() {
jq -r '.[] | select(.Labels["'${AUTOHEAL_CONTAINER_LABEL:=autoheal}'"] == "true") | .Id'
}
fi
echo "Monitoring containers for unhealthy status"
while true; do
sleep ${AUTOHEAL_INTERVAL:=5}
CONTAINERS=$(curl --no-buffer -s -XGET --unix-socket ${DOCKER_SOCK} http://localhost/containers/json | selector)
for CONTAINER in $CONTAINERS; do
HEALTH=$(curl --no-buffer -s -XGET --unix-socket ${DOCKER_SOCK} http://localhost/containers/${CONTAINER}/json | jq -r .State.Health.Status)
if [ "unhealthy" = "$HEALTH" ]; then
DATE=$(date +%d-%m-%Y" "%H:%M:%S)
echo "$DATE Container ${CONTAINER:0:12} found to be unhealthy. Restarting container ..."
# Note: kill and stop didn't honor the restart policy
#curl --no-buffer -s -XPOST --data '{"signal":"SIGKILL"}' --unix-socket ${DOCKER_SOCK} http://localhost/containers/${CONTAINER}/kill
curl --no-buffer -s -XPOST --unix-socket ${DOCKER_SOCK} http://localhost/containers/${CONTAINER}/restart
fi
done
done
else
exec "$@"
fi