DOCKER_SERVICE_RESTART.md

List Docker swarm stacks

Get a list of Docker swarm stacks:

docker stack ls

List running services

Use a stack name from the above Docker swarm stack list to list services running in the stack:

docker stack ps <stack name> | grep Running

Example

docker stack ps transitdata-prod | grep Running

Restart service

Restart a service by first scaling it to 0 replicas and then scaling it back to 1 replica:

docker service scale <service name>=0 && docker service scale <service name>=1

Example

docker service scale transitdata-prod_transitdata_omm_alert_source=0 && docker service scale transitdata-prod_transitdata_omm_alert_source=1

Restart by force updating

Using docker service scale command described above is the preferred way to restart a service but it is possible to use docker service update --force <service name>. However this may unexpectedly update the Docker image resulting in different version of an application running.