037、外部网络如何访问容器（2019-02-26 周二）

朴灿烈づ我的快乐病毒、 2022-01-07 11:51 194阅读 0赞

参考 [https://www.cnblogs.com/CloudMan6/p/7118860.html][https_www.cnblogs.com_CloudMan6_p_7118860.html]

外部访问容器的方法：端口映射

动态映射    -p 80    将容器的 tcp 80 端口映射到dockerhost的一个动态端口上

静态映射    -p 80:80 将容器的 tcp 80 端口映射到docker host的一个tcp80端口上

出容器使用的是 NAT ，进容器使用的是端口映射docker-proxy

root@docker-lab:~\# docker run -d -p 80 httpd    \#    将容器的80口映射到docker host的一个随机端口

3f65c28de842fded2a32a9c98afdefd289fc9013b4cf537236bdaee12ec8d87a

root@docker-lab:~\# docker ps

CONTAINER ID        IMAGE               COMMAND              CREATED             STATUS              PORTS                   NAMES

3f65c28de842        httpd               "httpd-foreground"   9 seconds ago       Up 7 seconds         0.0.0.0:32768->80/tcp   quizzical\_morse

root@docker-lab:~\# docker run -d -p 80:80 nginx    \#    将容器的80口映射到docker host的80口

a7e821d05e1d68c9db005db7d38c932234e7b06fcf38ec973dde0870207bae87

root@docker-lab:~\# docker ps

CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                   NAMES

a7e821d05e1d        nginx               "nginx -g 'daemon of…"   4 seconds ago       Up 3 seconds        0.0.0.0:80->80/tcp      quizzical\_banach

3f65c28de842        httpd               "httpd-foreground"       34 seconds ago      Up 32 seconds        0.0.0.0:32768->80/tcp   quizzical\_morse

root@docker-lab:~\# curl http://127.0.0.1:80    \#    在容器外面访问docker host IP：80 验证

<!DOCTYPE html>

<html>

<head>

<title>Welcome to nginx!</title>

</style>

</head>

<body>

<h1>Welcome to nginx!</h1>

<p> If you see this page, the nginx web server is successfully installed and

working. Further configuration is required.</p>

<p>For online documentation and support please refer to

<a href="http://nginx.org/">nginx.org</a>.<br/>

Commercial support is available at

<a href="http://nginx.com/">nginx.com</a>.</p>

<p><em>Thank you for using nginx.</em></p>

</body>

</html>

root@docker-lab:~\# curl http://127.0.0.1:32768    \#    在容器外面访问docker host IP：32768 验证

<html><body><h1> It works!</h1></body></html>

root@docker-lab:~\# ps -ef | grep proxy    \#    docker host 上提供端口映射服务的是 docker-proxy 进程

root     31150 24323  0 09:02 ?        00:00:00 /usr/bin/docker-proxy -proto tcp -host-ip 0.0.0.0 -host-port 32768 -container-ip 172.17.0.2 -container-port 80

root     31465 24323  0 09:02 ?        00:00:00 /usr/bin/docker-proxy -proto tcp -host-ip 0.0.0.0 -host-port 80 -container-ip 172.17.0.3 -container-port 80

![Image 1][]

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转载于:https://www.cnblogs.com/www1707/p/10435261.html

[https_www.cnblogs.com_CloudMan6_p_7118860.html]: https://www.cnblogs.com/CloudMan6/p/7118860.html
[Image 1]: