Clean shutdown DOCKER containers before reboot or shutdown OMV

You can stop docker

systemctl stop docker

Then run dockerd -D

After it goes stable you can press ctrl+c

and you will see how docker terminates all containers, the same happens on shutdown via systemd. In general docker tries to stop, if that doesn't happen in the first 10 seconds it will forcibly kill it.

I cannot find any information in the documentation on how to extend the stop time wait, or change the termination signal for a container when docker daemon is stopped


docker run provides:

--stop-signal string Signal to stop a container (default "SIGTERM")
--stop-timeout int Timeout (in seconds) to stop a container

Quote from alvins82

Is there a way to do this automatically without having to login via shell every-time I want to reboot/shutdown OMV? I've had a couple of times where my docker containers are in a dead state after stopping/starting my box.

What exactly are you referring to?

Quote from alvins82

I would have thought OMV would be doing a graceful shutdown of docker then itself before power-off? Looks like it is not the case.

Why do you blame omv? docker gets stopped in the same way i described above by systemd unit which is provided by docker

https://github.com/moby/moby/issues/32357

Here is an interesting discussion especially the comment at the end. Don’t make it about the issue but more like how containers are stopped or killed.