How to clean up residual docker images in RTF OR in PCE

1. Enter into gravity if you are using RTF appliances / PCE .

gravity enter

2. Fetch the list of all the images on a given node

docker images --format {{.Repository}}:{{.Tag}}

3. ​Fetch the list of all images belonging to the running containers

docker ps --format {{.Image}}

4. Fetch the list of all Unused images

runningImages=$(docker ps --format {{.Image}})
docker images --format {{.Repository}}:{{.Tag}} | grep -v "$runningImages"

5. Cleanup the unused images i.e.To prune including volumes

docker system prune -a --volumes

- all stopped containers
- all networks not used by at least one container
- all volumes not used by at least one container
- all images without at least one container associated to them
- all build cache

Note

1) The above steps need to be executed in all the cluster nodes.

2) You should also run the following to clean residual Gravity data from previous versions: How to Delete Old Gravity Version Directories in RTF