43 lines
1.4 KiB
Markdown
43 lines
1.4 KiB
Markdown
# Automatically add/update/remove containers from hosts-file
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docker-etchosts is a script that monitors dockers event stream, and
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adds/updates/removes containers to your (/etc/)hosts-file on the fly.
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The script is based on [dockermon by CyberInt](http://pythonwise.blogspot.de/2015/07/dockermon-docker-process-monitor.html).
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## Usage
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Started without further parameters the script will connect to `/var/run/docker.sock` and modify `hosts` in the current working directory.
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It will also process all currently running containers.
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To connect to a remote docker node or swarm cluster use `--socket-url`, e.g.
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python docker-etchosts.py --socket-url='tcp:///localhost:2335'
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To specify the full path to your hosts file you would like modified pass `--hosts-file=/etc/hosts`.
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To skip processing running containers on script startup pass `--skip-running`.
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## Running in a container
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The script runs fine dockerized, the supplied Dockerfile creates a image of about 80 MB size,
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running consumes about 15 MB RAM.
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### build
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docker build -t dockerhosts:pre .
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### run
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docker run -v /etc/hosts:/hosts -v /var/run/docker.sock:/var/run/docker.sock --privileged dockerhosts:pre
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### run and use tcp socket
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docker run -v /etc/hosts:/hosts --privileged dockerhosts:pre --socket-url=tcp:///localhost:2335
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### docker-compose
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...or instead of the above, just do:
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docker-compose up -d
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:)
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