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95ded14891
Add an argument to dcgc that allows dcgc to ignore removing a container and its child images based on the container's label
133 lines
2.8 KiB
ReStructuredText
133 lines
2.8 KiB
ReStructuredText
Docker Custodian
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================
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.. image:: https://travis-ci.org/Yelp/docker-custodian.svg
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:target: https://travis-ci.org/Yelp/docker-custodian
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Keep docker hosts tidy.
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.. contents::
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:backlinks: none
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Install
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-------
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There are three installation options
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Container
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~~~~~~~~~
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.. code::
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docker pull yelp/docker-custodian
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docker run -ti \
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-v /var/run/docker.sock:/var/run/docker.sock \
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yelp/docker-custodian dcgc --help
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Debian/Ubuntu package
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~~~~~~~~~~~~~~~~~~~~~
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First build the package (requires `dh-virtualenv`)
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.. code:: sh
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dpkg-buildpackage -us -uc
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Then install it
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.. code:: sh
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dpkg -i ../docker-custodian_*.deb
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Source
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~~~~~~
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.. code:: sh
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pip install git+https://github.com/Yelp/docker-custodian.git#egg=docker_custodian
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dcgc
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----
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Remove old docker containers and docker images.
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``dcgc`` will remove stopped containers and unused images that are older than
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"max age". Running containers, and images which are used by a container are
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never removed.
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Maximum age can be specificied with any format supported by
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`pytimeparse <https://github.com/wroberts/pytimeparse>`_.
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Example:
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.. code:: sh
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dcgc --max-container-age 3days --max-image-age 30days
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Prevent images from being removed
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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``dcgc`` supports an image exclude list. If you have images that you'd like
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to keep around forever you can use the exclude list to prevent them from
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being removed.
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::
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--exclude-image
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Never remove images with this tag. May be specified more than once.
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--exclude-image-file
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Path to a file which contains a list of images to exclude, one
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image tag per line.
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You also can use basic pattern matching to exclude images with generic tags.
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.. code::
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user/repositoryA:*
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user/repositoryB:?.?
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user/repositoryC-*:tag
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Prevent containers and associated images from being removed
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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``dcgc`` also supports a container exclude list based on labels. If there are
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stopped containers that you'd like to keep, then you can check the labels to
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prevent them from being removed.
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::
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--exclude-container-label
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Never remove containers that have the label key=value. =value can be
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omitted and in that case only the key is checked. May be specified
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more than once.
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You also can use basic pattern matching to exclude generic labels.
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.. code::
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foo*
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com.docker.compose.project=test*
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com.docker*=*bar*
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dcstop
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------
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Stop containers that have been running for too long.
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``dcstop`` will ``docker stop`` containers where the container name starts
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with `--prefix` and it has been running for longer than `--max-run-time`.
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Example:
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.. code:: sh
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dcstop --max-run-time 2days --prefix "projectprefix_"
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