如何杀死容器内的进程? Docker最高命令 [英] How to kill process inside container? Docker top command

问题描述

我有一个来自docker网站官方指南的简单示例.

I have simple example from official guide at docker website.

我运行以下命令:

sudo docker run -d ubuntu:latest /bin/sh -c "while true; do echo hello world; sleep 1; done"
a66asdasdhqie123...

然后从创建的容器中获取一些输出:

Then take some output from created container:

sudo docker logs a66
hello
hello
hello
...

然后我查找容器的运行过程:

Then I lookup the running processes of a container:

sudo docker top a66
UID                 PID                 PPID                C                   STIME               TTY                 TIME                CMD
root                25055               15152               0                   20:07               ?                   00:00:00            /bin/sh -c while true; do echo hello world; sleep 1; done
root                25295               25055               0                   20:10               ?                   00:00:00            sleep 1

接下来，我尝试杀死容器的第一个过程:

Next I try to kill the first process of container:

sudo docker exec a66 kill -9 25055

但是，在我将其更改之后，没有任何改变.进程仍然有效，并且每秒输出"hello".我怎么了?

However after I make it nothing changes. Process still works and output "hello" every second. What do I wrong?

推荐答案

当重现您的情况时，我看到docker top <container>和docker exec -it <container> ps -aux之间的PID不同.当您执行docker exec时，该命令在container =>内部执行，应使用容器的pid.否则，在没有docker的情况下，您可以直接从主机执行杀死操作，sudo kill -9 25055.

When I reproduce your situation I see different PIDs between docker top <container> and docker exec -it <container> ps -aux. When you do docker exec the command is executed inside the container => should use container's pid. Otherwise you could do the kill without docker straight from the host, in your case: sudo kill -9 25055.

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