docker-reg-gc

The Docker Registry Garbage Collector is a small script which allows you to clean up your registry v2.

Dependencies

On the machine where the script is running, should be installed the following components (tested with given versions):

• curl 7.29.0
• jq-1.5
• Awk 4.0.2

Howto use

1. Update registry configuration file (config.yml) and restart registry storage: delete: enabled: true or set the ENV REGISTRY_STORAGE_DELETE_ENABLED=true
2. Befor you can run the script, please change the value of the variable DOCKER_REGISTRY to your registry url and make the script runable (chmod 775). You can add a LIVINGDAYS parameter, but don't need to. The default for this parameter is 150 Days. Than just call the script: ./docker-reg-gc.sh (LIVINGDAYS) It is using API calls and soft-removes all older images from your registry
3. Add a cronjob to your registryserver which calls the docker registry garbagecollector itself docker exec -it "${REGISTRY_CONTAINER_ID}" bin/registry garbage-collect "${REGISTRY_CONFIG}" That will clean up your docker registry filesystem.