docker清理磁盘空间

Jan 5, 2022

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参考文档：
https://docs.docker.com/engine/reference/commandline/system_prune/
命令：
docker system prune [OPTIONS]
参数：
–all , -a Remove all unused images not just dangling ones
–filter API 1.28+
Provide filter values (e.g. ‘label==’)
–force , -f Do not prompt for confirmation
–volumes Prune volumes

# docker system prune
WARNING! This will remove:
        - all stopped containers
        - all volumes not used by at least one container
        - all networks not used by at least one container
        - all dangling images
Are you sure you want to continue? [y/N] y

加到crontab里自动执行：

docker clear disk
12 12 * * 0 docker system prune -f

手动清理：

# Remove exited containers
docker ps -a -q -f status=exited | xargs --no-run-if-empty docker rm -v

# Remove dangling images
docker images -f "dangling=true" -q | xargs --no-run-if-empty docker rmi

# Remove unused images
docker images | awk '/ago/  { print $3}' | xargs --no-run-if-empty docker rmi

# Remove dangling volumes
docker volume ls -qf dangling=true | xargs --no-run-if-empty docker volume rm

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