如何确定进程是否在 lxc/Docker 中运行? [英] How to determine if a process runs inside lxc/Docker?

问题描述

有什么方法可以确定进程(脚本)是否在 lxc 容器(~Docker 运行时)内运行?我知道有些程序能够检测它们是否在虚拟机中运行，lxc/docker 是否有类似的功能?

Is there any way to determine if a process (script) runs inside an lxc container (~ Docker runtime)? I know that some programs are able to detect whether they run inside a virtual machine, is something similar available for lxc/docker?

推荐答案

最可靠的方法是检查/proc/1/cgroup.它会告诉您 init 进程的控制组，当您不在在容器中时，对于所有层次结构，它将是 / .当您在容器中时，您将看到锚点的名称.对于 LXC/Docker 容器，它将分别类似于 /lxc/ 或 /docker/.

The most reliable way is to check /proc/1/cgroup. It will tell you the control groups of the init process, and when you are not in a container, that will be / for all hierarchies. When you are inside a container, you will see the name of the anchor point. With LXC/Docker containers, it will be something like /lxc/<containerid> or /docker/<containerid> respectively.

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