picoded/docker-logrotate repository overview

⁠picoded/docker-logrotate

https://hub.docker.com/r/picoded/docker-logrotate/⁠ https://github.com/picoded/dockerfiles/tree/master/logging/docker-logrotate/⁠

⁠Summary

You will need the following volume mounted, with read/write access. /var/lib/docker/containers/:/var/lib/docker/containers/:rw

⁠More details

An oversimplified logrotation setup for docker. That functions as a base default for docker deployments.

This was designed to be used along with FileBeat.

https://hub.docker.com/r/picoded/docker-filebeat/⁠ https://github.com/picoded/dockerfiles/tree/master/logging/docker-filebeat/⁠

For crtical production use of logs however, you will need to setup, a full log infrastructure stack. Such as ELK

And even without filebeat, I would still ensure that this is running, so that individual container logs do not build up to gigbyte sizes.

The following is the summary of the container.

• Pickup new containers within 5 minutes
• Works with FileBeat
• Clearing of log entry within 10 days
• Accept possible log loss (due to copytruncate) on rotation

⁠Docker and copytruncate issue

Copytruncate issue : https://linux.die.net/man/8/logrotate⁠ (Search the copytruncate segment)

Docker issue : https://github.com/docker/docker/issues/7333⁠

Because it seem that docker will not be supporting the logging filehandle change notification "anytime soon", without re-configuring the container. Usage of copytruncate is still needed for containers, not having their own dedicate logging infrastructure.

⁠Issue filling

Any problems / comments / kudos should be filed at github =) https://github.com/picoded/dockerfiles⁠