Docker Stack Wait
Waits for a docker stack deploy to complete.
Example Usage:
docker-stack-wait.sh $stack_name
Help output:
$ ./docker-stack-wait.sh -h
docker-stack-wait.sh [opts] stack_name
-f filter: only wait for services matching filter, may be passed multiple
times, see docker stack services for the filter syntax
-h: this help message
-n name: only wait for specific service names, overrides any filters,
may be passed multiple times, do not include the stack name prefix
-p lines: print last n lines of relevant service logs at end
passed to the '--tail' option of docker service logs
-r: treat a rollback as successful
-s sec: frequency to poll service state (default 5 sec)
-t sec: timeout to stop waitingUsage as container
An image is available at:
- Docker Hub:
sudobmitch/docker-stack-wait - GHCR:
ghcr.io/sudo-bmitch/docker-stack-wait
To use this image, you will need to mount the docker socket:
$ docker run --rm -it \
-v /var/run/docker.sock:/var/run/docker.sock \
sudobmitch/docker-stack-wait $stack_nameor with an alias
$ alias docker-stack-wait='docker run --rm -it \
-v /var/run/docker.sock:/var/run/docker.sock \
sudobmitch/docker-stack-wait'Development
To test changes to the script easily, you can use the example example-docker-compose.yml file with:
docker-compose -f dind-docker-compose.yml up
docker-compose -f dind-docker-compose.yml exec dind sh
docker node ls || docker swarm init
docker stack deploy --compose-file work/example-docker-compose.yml the_stack
./work/docker-stack-wait.sh the_stackFilter Examples
The -n and -f options allow to select a subset of the services in a stack.
With the following compose yml file:
version: '3.7'
services:
normal:
image: busybox
command: /bin/sh -c ":>/healthy; tail -f /dev/null"
deploy:
labels:
deploy.wait: "true"
deploy.quick: "true"
healthcheck:
test: /bin/sh -c "[ -f /healthy ] && exit 0 || exit 1"
interval: 15s
start_period: 60s
retries: 3
slow:
image: busybox
command: /bin/sh -c "sleep 50; :>/healthy; tail -f /dev/null"
deploy:
labels:
deploy.wait: "true"
healthcheck:
test: /bin/sh -c "[ -f /healthy ] && exit 0 || exit 1"
interval: 15s
start_period: 60s
retries: 3
tooslow:
image: busybox
command: /bin/sh -c "sleep 300; :>/healthy; tail -f /dev/null"
deploy:
labels:
deploy.wait: "false"
healthcheck:
test: /bin/sh -c "[ -f /healthy ] && exit 0 || exit 1"
interval: 15s
start_period: 60s
retries: 3We can wait for only the first two services using labels:
docker-stack-wait.sh -f label=deploy.wait=true waittestOr by waiting on individual service names:
docker-stack-wait.sh -n normal -n slow waittestIf you deploy a stack using multiple compose files, you can wait for the
services in a single compose file using the following example that uses
docker-compose to generate a list of services from one file:
wait_args=""
for arg in $(docker-compose -f docker-compose.yml config --services 2>/dev/null); do
wait_args="${wait_args:+${wait_args} }-n $arg"
done
docker-stack-wait.sh $wait_args waittest