logging - Where is the Docker daemon log?

Question

Where is the Docker daemon log? Oddly cannot find an answer to this via man, StackOverflow or Docker Docs. Note I am not asking for the docker container STDOUT, but the daemon log for troubleshooting communications between the client and container via daemon / proxy.

Answer 1

It depends on your OS. Here are the few locations, with commands for few Operating Systems:

• Ubuntu (old using upstart ) - /var/log/upstart/docker.log
• Ubuntu (new using systemd ) - sudo journalctl -fu docker.service
• Amazon Linux AMI - /var/log/docker
• Boot2Docker - /var/log/docker.log
• Debian GNU/Linux - /var/log/daemon.log
• CentOS - /var/log/message | grep docker
• CoreOS - journalctl -u docker.service
• Fedora - journalctl -u docker.service
• Red Hat Enterprise Linux Server - /var/log/messages | grep docker
• OpenSuSE - journalctl -u docker.service
• OSX - ~/Library/Containers/com.docker.docker/Data/com.docker.driver.amd64-linux/log/d??ocker.log
• Windows - Get-EventLog -LogName Application -Source Docker -After (Get-Date).AddMinutes(-5) | Sort-Object Time, as mentioned here.