docker 常用知识总结

[victoryw]

docker 部署体系介绍

镜像、容器、服务、栈、分布式部署等等
https://docs.docker.com/get-started/part2/

docker rm container, images and Volumes, especially dangling

https://www.digitalocean.com/community/tutorials/how-to-remove-docker-images-containers-and-volumes

docker rm contaner

docker rm exited container

$ docker ps -a -f status=exited
$ docker rm $(docker ps -a -f status=exited -q)

if more than one filter

$ docker ps -a -f status=exited -f status=created
$ docker rm $(docker ps -a -f status=exited -f status=created -q)

docker rm by grep

$ docker ps -a |  grep "pattern”
$ docker ps -a | grep "pattern" | awk '{print $3}' | xargs docker rmi

Stop and remove all containers

$ docker stop $(docker ps -a -q)
$ docker rm $(docker ps -a -q

Removing Volumes

$ docker volume rm $(docker volume ls -f dangling=true -q)

$ docker volume ls
$ docker volume rm volume_name volume_name

docker移除无用image

docker images -q --filter "dangling=true" | xargs -t --no-run-if-empty docker rmi

https://docs.docker.com/compose/reference/down/

docker composer 的 health check

• v2.1: https://github.com/peter-evans/docker-compose-healthcheck
• v3: 建议使用 docker stack 而不是 docker compose。
  depends_on 不再被支持：Depends_on in version3 docker/compose#4305
  以及在分布式部署下的解决方法：Missing Depends_ON functionality during start process within docker-swarm moby/moby#31333
• wait 脚本: https://github.com/betalo-sweden/await

docker for mac 空间回收

from docker/for-mac#371

brew install  qemu
$ pwd
/Users/nick/Library/Containers/com.docker.docker/Data/com.docker.driver.amd64-linux
$ mv Docker.qcow2 Docker.qcow2.original
$ du -hs Docker.qcow2.original
12G     Docker.qcow2.original
$ qemu-img convert -O qcow2 Docker.qcow2.original Docker.qcow2
$ rm Docker.qcow2.original
$ du -hs Docker.qcow2

772M Docker.qcow2