Logging

Configuration ​

Check the current logging driver with:

docker info --format '{{.LoggingDriver}}'

To change the log configuration globally, edit the file /etc/docker/daemon.json.

Local ​

Recommended for development, the local driver is optimized for performance and disk use. By default it preserves 100MB of log messages per container and uses automatic compression.

{
  "log-driver": "local",
  "log-opts": {
    "max-size": "20m",
    "max-file": "5",
    "compress": "true"
  }
}

Syslog ​

The syslog driver outputs the logs to a file inside /var/log. Sometimes used on some production servers.

{
  "log-driver": "syslog",
  "log-opts": {
    "tag": "app_service"
  }
}