Docker Container Logs

Question

We are running Century Link's Watchtower container. This allows us to have a watch a docker registry and download new images when they are created. When watchtower finds a new image it runs docker rmi which deletes the old container. With that the old logs go with it.

Is there a way without using a logging service to retain the logs when docker does it's clean up?

Answer 1

You can retain your logs by either logging to shared data volume :

Say you have logs of container in /apps/logs location

 docker volume create logs
 docker run -v logs:/apps/logs <image>

Or you can directly log onto host directory

docker run -v /apps/logs:/apps/logs <image>

So, by these methods you can retain your logs even after old containers and images are deleted.