Restart a single service in the docker stack

Question

Does anyone know if there is a way for the docker router to restart one service that is part of the stack without restarting the entire stack?

Answer 1

Executing docker stack deployagain for me is the way to upgrade services. As Answer by Francois , as well as in my own experience, it updates only those services that need to be updated.

But sometimes it seems that it’s easier to test the material just to restart one service. In my case, I had to clear the volume and update the service to start it as if it were fresh. I am not sure if there is a flaw in the method that I will describe. I tested it in my development stack and it worked fine for me.

Get the identifier of the service you want to demolish, then use docker service update --force <id>it to force a service update that will effectively redeploy it.

$ docker stack services <stack_name>
ID                  NAME              ...
3xrdy2c7pfm3        stack-name_api    ...

$ docker service update --force 3xrdy2c7pfm3

The flag --forcewill cause the service to update, causing it to reboot.

Answer 2

Scale to 0 and backup:

docker service scale myservice=0
docker service scale myservice=10

Answer 3

- docker stack:

compose dab

: docker stack , docker compose. . , docker stack deploy , :

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service update , , .

You can also refer to this similar SO QA .

Answer 4

remove this:

docker stack rm stack_name

redeploy it:

docker stack deploy -c docker-compose.yml stack_name