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Docker Desktop System Logs

An overview of where Docker Desktop logs are stored and how long they are retained

Docker Desktop Logging:

Docker Desktop logs are comprised of 3 components:

  1. Docker Engine
  2. Electron
  3. Docker Desktop

Docker Engine Logging

  • Docker Engine logs are configurable

  • The defaults for Docker Engine logging are as follows:

    • Max file size of 20MiB
    • Maxmium retained files of 5
    • Compressed rotated log files is enabled

Changing Docker Engine Defaults

  • Example change to daemon.json to deviate from default retention. For more options see logging driver options and daemon.json configuration

    {
    "log-driver": "local",
    "log-opts": {
        "max-size": "10m"
    }
}

  • Windows daemon.json path

    %ProgramData%\docker\config\daemon.json

  • macOS daemon.json path

    /System/Volumes/Data/Users/kiener/.docker/daemon.json

Location of Log Files

  • Windows

    %LOCALAPPDATA%\Docker\log\vm\
%LOCALAPPDATA%\Docker\log\host\

  • macOS

    ~/Library/Containers/com.docker.docker/Data/log/vm/
~/Library/Containers/com.docker.docker/Data/log/host/

Docker Desktop Logging

  • Docker Desktop logging is currently non-configurable

  • The defaults for Docker Desktop logging are as follows

    • Maximum single log file size of 1MiB per component
    • Maximum log file space per component of 10MiB
    • There are fifteen components in Docker Desktop

Electron

  • Electron logging is currently non-configurable

  • The defaults for Electron logging are as follows

    • Maximum of 14 days of log files
    • Maximum single log file size of 20MiB

Space Utilization in Aggregate

  • Theoritical Maximum of 750MiB
  • Real-world power users generally see 150MiB as a high water mark

Citations and Helpful Files