Docker之容器端口映射-蒲公英云

Docker之容器端口映射

女爷i 2023-06-18 14:52 68阅读 0赞

1.启动一个nginx容器

如果没有下载ngin镜像的话,先下载一个

docker pull nginx

启动nginx容器

docker run —name web-nginx -d nginx

2.查看当前bridge的网络情况

[root@localhost ~]# docker network inspect bridge
[
    {
        "Name": "bridge",
        "Id": "19fa32c5bc3e1f64e4d2818d6899d65a73a6290b687a890166ded26460a5ab6c",
        "Created": "2019-03-01T08:47:29.847096345+08:00",
        "Scope": "local",
        "Driver": "bridge",
        "EnableIPv6": false,
        "IPAM": {
            "Driver": "default",
            "Options": null,
            "Config": [
                {
                    "Subnet": "172.17.0.0/16",
                    "Gateway": "172.17.0.1"
                }
            ]
        },
        "Internal": false,
        "Attachable": false,
        "Ingress": false,
        "ConfigFrom": {
            "Network": ""
        },
        "ConfigOnly": false,
        "Containers": {
            "1c709e2c5d8f99081f030c6fbdb92150fbd51d0133cd5e5066207b24b31fb611": {
                "Name": "web-nginx",
                "EndpointID": "de3a703e2c6808af069f97ee04f246924f4bdc1b1320b7d595d59284252c34fc",
                "MacAddress": "02:42:ac:11:00:02",
                "IPv4Address": "172.17.0.2/16",
                "IPv6Address": ""
            }
        },
        "Options": {
            "com.docker.network.bridge.default_bridge": "true",
            "com.docker.network.bridge.enable_icc": "true",
            "com.docker.network.bridge.enable_ip_masquerade": "true",
            "com.docker.network.bridge.host_binding_ipv4": "0.0.0.0",
            "com.docker.network.bridge.name": "docker0",
            "com.docker.network.driver.mtu": "1500"
        },
        "Labels": {}
    }
]

发现web-nginx的ip地址为 172.17.0.2/16

3.测试地址发访问

[root@localhost ~]# curl http://172.17.0.2:80
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
    body {
        width: 35em;
        margin: 0 auto;
        font-family: Tahoma, Verdana, Arial, sans-serif;
    }
</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>

如果用该地址去访问是可以的,但是如果用127.0.0.1:80去访问就不行了

4.端口映射(-p 参数)

(1).先停止移除掉刚创建的容器
停止以及移除

docker stop web-nginx
docker rm web-nginx

(2) 重新创建nginx容器,将nginx的80端口,映射到本机的80端口

docker run --name web-nginx -d -p 80:80 nginx

重新使用127.0.0.1:80访问,发现可以访问了

[root@localhost ~]# curl 127.0.0.1:80
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
    body {
        width: 35em;
        margin: 0 auto;
        font-family: Tahoma, Verdana, Arial, sans-serif;
    }
</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>