3.4.17 ps/kill/rm/rmi

ps

• 用法

  Usage: docker ps [OPTIONS]

  List containers

  -a, --all=false       Show all containers (default shows just running)
  --before=             Show only container created before Id or Name
  -f, --filter=[]       Filter output based on conditions provided
  --help=false          Print usage
  -l, --latest=false    Show the latest created container, include non-running
  -n=-1                 Show n last created containers, include non-running
  --no-trunc=false      Don't truncate output
  -q, --quiet=false     Only display numeric IDs
  -s, --size=false      Display total file sizes
  --since=              Show created since Id or Name, include non-running
  

• 例子

$ sudo docker ps -a
CONTAINER ID  IMAGE    COMMAND       CREATED       STATUS                      PORTS    NAMES
b448f729a0b0  centos   "/bin/bash"   4 days ago    Exited (137) 4 days ago              pensive_wilson
54c7b6d6632e  centos   "/bin/bash"   4 days ago    Exited (0) 3 days ago                adoring_wozniak

利用筛选器筛选出exied状态时0的容器：

$ sudo docker ps -a --filter 'exited=0'
CONTAINER ID        IMAGE                     COMMAND             CREATED             STATUS                  PORTS               NAMES
8d92293a65e9        registry.liugang/centos   "/bin/bash"         7 days ago          Exited (0) 5 days ago                       web
8410f389ea65        registry.liugang/centos   "/bin/bash"         7 days ago          Exited (0) 7 days ago                       test_link

• 总结

-a参数列出所有状态的容器， -l列出最新创建的容器，包括停止运行状态的容器。

kill

• 用法

Usage: docker kill [OPTIONS] CONTAINER [CONTAINER...]

Kill a running container using SIGKILL or a specified signal

  --help=false         Print usage
  -s, --signal=KILL    Signal to send to the container

• 例子

$ sudo docker kill pensive_wilson
pensive_wilson

这将停止该容器

• 总结

结合ps命令，可以做到kill所有正在运行的容器：

$ sudo docker kill $(sudo docker ps -a -q)

rm

• 用法

Usage: docker rm [OPTIONS] CONTAINER [CONTAINER...]

Remove one or more containers

  -f, --force=false      Force the removal of a running container (uses SIGKILL)
  --help=false           Print usage
  -l, --link=false       Remove the specified link
  -v, --volumes=false    Remove the volumes associated with the container

• 例子

$ sudo docker rm pensive_wilson
pensive_wilson

这将删除一个已经停止运行的容器，若容器正在运行，则将会使docker报错，停止容器再删除，或者加上-f参数强制删除（不建议）。

• 总结

类似的我们也结合ps删除所有容器：

$ sudo docker kill $(sudo docker ps -a -q)
...
...
...
$ sudo docker rm $(sudo docker ps -a -q)
...
...
...

要清空容器，首先要保证没有容器在运行。

rmi

• 用法

Usage: docker rmi [OPTIONS] IMAGE [IMAGE...]

Remove one or more images

  -f, --force=false    Force removal of the image
  --help=false         Print usage
  --no-prune=false     Do not delete untagged parents

• 例子

$ sudo docker rmi centos:6.5
...
...
...

• 总结

要区分rm于rmi多用法。 与docker images命令配合来清空镜像：

$ sudo docker rmi $(sudo docker images -a -q)