How to check the status of docker-compose up -d command

Question

When we run docker-compose up-d command to run dockers using docker-compose.yml file, it starts building images or pulling images from the registry. We can see each and every step of this command on the terminal.

I am trying to run this command from a python script. The command starts successfully but after the command, I do not have any idea of how much the process has been completed. Is there any way I can monitor the status of docker-compose up -d command so that script can let the user (who is using the script) know how much the process has completed or if the docker-compose command has failed due to some reasons.?

Thanks

CODE:

from pexpect import pxssh

session = pxssh.pxssh()
if not session.login(ip_address,<USERNAME>, <PASSWORD>):
    print("SSH session failed on login")
    print(str(session))
else:
    print("SSH session login successfull")
    session.sendline("sudo docker-compose up -d")
    session.prompt()
    resp = session.before
    print(resp)

Answer 1

You can view docker compose logs with following ways

1. Use docker compose up -d to start all services in detached mode (-d) (you won't see any logs in detached mode)
2. Use docker compose logs -f -t to attach yourself to the logs of all running services, whereas -f means you follow the log output and the -t option gives you nice timestamps (Docs)

credit

EDIT: Docker Compose is now available as part of the core Docker CLI. docker-compose is still supported for now but most documentation I have seen now refers to docker compose as standard. See https://docs.docker.com/compose/#compose-v2-and-the-new-docker-compose-command for more.

Answer 2

What I do to debug small issues is to run:

docker-compose up {service_name} 

This way I get to see the output for an individual service. If the service has a dependency you can always start multiple services like so:

docker-compose up {service_name1} {service_name2}

Additionally I use:

docker-compose logs -f -t {service_name1}

To see the logs of an already running service or alternatively:

docker logs -t -f {container_name}

Notice that the command above needs the container name and not the service name

This way you can make sure service by service that everything works as expected and then you can launch them all in detached mode as suggested in the other answers