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docker-convenience-scripts

This repository will contain different convenience scripts for docker I have gathered over time.

docker_clone_volume.sh

The purpose for this script is that I can easily create a clone of an existing docker data with a new name. This will allow me to create a duplicate of an existing data volume I use in the production environment of my blog for example and take that duplicate to my development version to ensure I have the latest production data also at development.

You can find more details in my blog post Cloning Docker Data Volumes

docker_clone_volume_across_servers.sh

The script relates to the above one, in addition, it adds the possibility to transfer named volume from one host machine to another.

It is worth noting, that :

  • you should have running docker daemon and have ssh available on both hosts;
  • you ought to have access to root;
  • you might want be ensured that your destination containers are stopped before copying the volume.

Refer to stackoverflow topic.

to do

check if target volume has already existed (or not needed, cauz user merely should understand circumstances)

docker_get_data_volume_info.sh

The purpose of this script is that I can easily get a list of details for all data volumes that are currently present. The information that is provided to the user as output is per data volume the current size of the data volume and a list of stopped or running containers that have a link to this data volume, including the image corresponding to the container. The script allows me to easily see if there are some data volumes on my disk that are taking up a lot of space and are not needed anymore.

You can find more details in my blog post Listing information for all your named/unnamed data volumes

docker_remove_untagged_img.sh

The purpose for this script is to remove all untagged images from the docker local registry. When building the same docker images multiple times, it is easy to leave a lot of them behind without tags, especially when using <latest> tags. These eat up precious space in the hard drive and have little benefit. The convenience script executes the docker rmi command for all images with no tags assigned.

License

The contents of this repository are covered under the MIT License