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

User · Answer

Also you can see logs by this command   docker service ps --no-trunc  serviceName

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Add ways to find docker daemon log in windows   try  When using docker machine on Windows and Mac OSX  the daemon runs inside a virtual machine   First  find your active Docker machine   docker-machine ls Find the name of the active docker machine under the NAME column in the output   You can copy the docker daemon log file to your local directory for analysis   docker-machine scp default  var log docker log    Where default is the name of active your docker machine

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If your OS is using systemd then you can view docker daemon log with   sudo journalctl -fu docker service

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Docker for Mac  Beta     Library Containers com docker docker Data com docker driver amd64-linux log d  ocker log

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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

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For Mac with Docker Toolbox  ssh into the VM first with docker-machine ssh  VM-NAME  and then check  var log docker log

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I was not able to find the logs under Manjaro 20 Arch Linux  Instead i just stopped the docker daemon process and restarted daemon in debug mode with   sudo dockerd -D to produce logs  It s unfortunate that the official Docker docs don t provide this info for Arch  This should not only work for Arch  but for other systems in general

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For Docker Mac Native  without Boot2Docker or docker-machine  running your Docker installation without extra VirtualBox - which I would recommend over the others   all the answers didn  t work for me  But the Docker docs fortunately came to the rescue   If you want to see the docker daemon logs on commandline  just type   syslog -k Sender Docker   Alternatively from Mac OS Sierra on  you can use the newly designed Mac Console App  don  t get confused here with the App  Terminal   the Console App  s icon looks quite similar - I found it with the Launchpad below  Others      There  s an article here which describes the general usage of the new Mac OS Sierra Console App  which didn  t make it into the official Docker docs yet   Inside the Console App just choose system log and type Docker into the search bar  That  s it  Now you should see all Docker related logs

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The below solution worked for me in Ubuntu 20 04 Logs stored in   var lib docker containers  lt container id gt   lt container id gt -json log To know container Id    docker ps

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The location of docker logs has changed for Mac OSX to   Library Containers com docker docker Data com docker driver amd64-linux console-ring  See Docker Daemon Documentation

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In my environment docker for mac 17 07   there is no log file at   Library Containers com docker docker Data com docker driver amd64-linux log d  ocker log Instead I can find log file as below   Enter into VM     screen    Library Containers com docker docker Data com docker driver amd64-linux tty or    screen   Library Containers com docker docker Data vms 0 tty  Check log file     tail -f  var log docker log

User · Answer

Using CentOS7  logs are available using the command journalctl -u docker   Answering distinctly  because  sabin s answer might be accurate for older versions of CentOS but was not true for me      systemd has its own logging system called the journal  The logs for the docker daemon can be viewed using journalctl -u docker   Ref  https   docs docker com engine admin configuring

[logging] Where is the Docker daemon log?

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