如何在全球范围内显示由 docker-compose 创建的所有正在运行的容器，而不考虑 docker-compose.yml

Question

I have several docker-compose.yml files, running ok with docker-compose up , individually.

Each docker-compose runs several containers.

After they are up, I can't see what containers are up with docker ps .
I can see something with docker-compose ps , but only for a specific docker-compose.yml.

I want access to global polling of the containers state.

How can I list all running containers, no matter their origin?

Answer 1

Here is kind of a guess based on the clues of your question.

When you do run containers via docker-compose up , please do mind that hitting CTRL+C will actually stop your containers.

Here is an example of doing this:

$ docker-compose up
[+] Running 1/0
 ⠿ Container docker-test-1  Created                                  0.0s
Attaching to docker-test-1
^CGracefully stopping... (press Ctrl+C again to force)
[+] Running 1/1
 ⠿ Container docker-test-1  Stopped                                 10.2s
canceled

The important part here being: ^CGracefully stopping...

If you want to keep them running, you will have to run docker-compose up in a detached mode, with the help of the -d option.

 -d, --detach Detached mode: Run containers in the background, print new container names. Incompatible with --abort-on-container-exit.

^{Source: https://docs.docker.com/compose/reference/up/}

---

So doing,

docker-compose up -d && docker ps

Should actually give you what you expected.
Eg:

$ docker-compose up -d && docker ps
[+] Running 2/2
 ⠿ Network docker_default   Created                                                                                   0.1s
 ⠿ Container docker-test-1  Started                                                                                   0.5s
CONTAINER ID   IMAGE     COMMAND               CREATED        STATUS                  PORTS     NAMES
ab9f422247c9   alpine    "tail -f /dev/null"   1 second ago   Up Less than a second             docker-test-1

---

And if you want to see all container, regardless of their state, you can use the -a option of docker ps .

 --all, -a Show all containers (default shows just running)

^{Source: https://docs.docker.com/engine/reference/commandline/ps/}

Eg:

$ docker-compose up  
[+] Running 2/2
 ⠿ Network docker_default   Created                                                                                   0.1s
 ⠿ Container docker-test-1  Created                                                                                   0.1s
Attaching to docker-test-1
^CGracefully stopping... (press Ctrl+C again to force)
[+] Running 1/1
 ⠿ Container docker-test-1  Stopped                                                                                  10.2s
canceled
$ docker ps -a
CONTAINER ID   IMAGE                 COMMAND               CREATED          STATUS                       PORTS     NAMES
615bcc6f1e50   alpine                "tail -f /dev/null"   18 seconds ago   Exited (137) 3 seconds ago             docker-test-1

Answer 2

Docker compose adds labels to each container that it creates. If you want to get all containers created by compose, you can perform a container ls and apply a filter.

docker container ls --filter label=com.docker.compose.project

This will show all running container created by compose, regardless of the project name.

For example, I created 2 apps in 2 different compose projects. loadbalancer and manager . With the command, I get both back, but no other container that have not been created by compose and therefore don't container a project label.

$ docker container ls --filter label=com.docker.compose.project --format \
   'table {{.ID}}\t{{.Names}}\t{{.Status}}\t{{.Label "com.docker.compose.project"}}\t{{.Networks}}'

CONTAINER ID   NAMES                STATUS          project        NETWORKS
791f4059b4af   loadbalancer_app_1   Up 11 minutes   loadbalancer   loadbalancer_default
8d26e4503721   manager_app_1        Up 24 minutes   manager        manager_default

Answer 3

To list all running containers in docker

$docker ps

When containers are running and are created as a part of docker definition present in docker-compose.yml files. In a basic scenario, i would do

$docker-compose up -d

to start the container and use the below command to check the containers are running

$ docker-compose ps

First command should contain the results from the compose command as well.