> For the complete documentation index, see [llms.txt](https://camelgemonion.gitbook.io/docker/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://camelgemonion.gitbook.io/docker/docker-overview/docker-wang-luo/host-mo-shi.md).

# host模式

host模式可以让docker与宿主机共享同一个网络命名空间。它将容器的网络直接绑定到宿主机的网络上，但是这样一来主机网络与容器网络之间不再具有隔离性。

我们通过启动一个nginx容器来理解什么是host模式。启动一个nginx容器将它直接绑定到宿主机的80端口。从网络的角度来看，这与nginx进程直接在 Docker 主机上运行而不是在容器中运行是相同级别的隔离。但是，所有其他方面(如存储、进程空间和用户命名空间)，nginx进程与主机是隔离的。

### 执行步骤

1. 创建和启动一个容器，然后作为独立的一个进程运行。--rm选项表示一旦容器退出或停止就移除容器。-d表示使容器在后台运行。

```
docker run --rm -d --network host --name my_nginx nginx
```

&#x20;  2\. 通过<http://localhost:80/来访问nginx。>

&#x20;  3\. 使用下面的命令检查docker的网络栈：

* 检查所有的网络接口然后没有新的接口被创建。

  ```
  ip addr show
  ```
* 使用netstat来检查哪个进程被绑定到80端口。这里需要使用sudo，因为进程由Dokcer守护进程的用户拥有否则我们无法看到它的名字或PID。

  ```
  sudo netstat -tulpn | grep :80
  ```

&#x20;   4\. 停止容器，它会被自动删除，因为我们指定了--rm选项。

```
docker container stop my_nginx
```


---

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