Hands-On Microservices with Kotlin

Controlling the service

We can list the instance of one service with the command:

docker service ps hello-service

This will output something like:

ID            NAME             IMAGE                     suqe3o61n38e  hello-service.1  localhost:5000/hello:latestenhf89re1kz9  hello-service.2  localhost:5000/hello:latestsqmo44zoaqnc  hello-service.3  localhost:5000/hello:latest

We can now open a shell session on those containers with the following command:

docker exec -it hello-service.2.enhf89re1kz9cieyvdgmnl9l1 /bin/sh

This will open a terminal to that Docker container, and we need to use the exit command to terminate it.

Finally, if we want to, we can delete a service with the following command:

docker service rm hello-service

With this last command, all service instances will be terminated, ...