Docker的网络访问：
#systemctl start docker
#ifconfig
[root@zizhen02 ~]# ifconfig
docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255
ether 02:42:b2:e3:5b:db txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
必须安装网桥工具bridge-utils，运行命令：#yum install bridge-utils
https://fp-moon.iteye.com/blog/1468650
[root@zizhen02 ~]# brctl show
bridge name bridge id STP enabled interfaces
docker0 8000.0242b2e35bdb no
docker网络访问有两种访问方式： 随机映射和指定映射
随机映射：docker run -P
#docker images
#docker run –d –P nginx #docker 运行到后台
#[root@zizhen02 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
2ce4f13ed654 nginx "nginx -g 'daemon of…" 22 seconds ago Up 21 seconds 0.0.0.0:32768->80/tcp condescending_wilbur
查看路由表 #iptables –t nat -vnL
[root@zizhen02 ~]# iptables -t nat -vnL
Chain PREROUTING (policy ACCEPT 10 packets, 1030 bytes)
pkts bytes target prot opt in out source destination
34 1760 DOCKER all -- * * 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst-type LOCAL
Chain INPUT (policy ACCEPT 10 packets, 1030 bytes)
pkts bytes target prot opt in out source destination
Chain OUTPUT (policy ACCEPT 24 packets, 1448 bytes)
pkts bytes target prot opt in out source destination
1 60 DOCKER all -- * * 0.0.0.0/0 !127.0.0.0/8 ADDRTYPE match dst-type LOCAL
Chain POSTROUTING (policy ACCEPT 53 packets, 2964 bytes)
pkts bytes target prot opt in out source destination
0 0 MASQUERADE all -- * !docker0 172.17.0.0/16 0.0.0.0/0
0 0 MASQUERADE tcp -- * * 172.17.0.2 172.17.0.2 tcp dpt:80
Chain DOCKER (2 references)
pkts bytes target prot opt in out source destination
0 0 RETURN all -- docker0 * 0.0.0.0/0 0.0.0.0/0
29 1516 DNAT tcp -- !docker0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:32768 to:172.17.0.2:80
#ps -aux |grep dhcp
#cat /var/lib/libvirt/dnsmasq/default.conf
[root@zizhen02 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
2ce4f13ed654 nginx "nginx -g 'daemon of…" 16 minutes ago Up 16 minutes 0.0.0.0:32768->80/tcp condescending_wilbur
[root@zizhen02 ~]# docker logs 2ce4f13ed654
指定映射：
-p hostPort:containerPort
-p ip: hostPort:containerPort
-p ip: : containerPort
-p hostPort:containerPort:udp
-p 443:443 -p 81:80
#
[root@zizhen02 ~]# docker run -d -p 192.168.1.107:8000:80 --name mynginx nginx
5cb5e2fb6d1151d4cf5a1bf5c5241ce6baa55375fc319d97723b5ae17ed98199
[root@zizhen02 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
5cb5e2fb6d11 nginx "nginx -g 'daemon of…" 16 seconds ago Up 15 seconds 192.168.1.107:8000->80/tcp mynginx
2ce4f13ed654 nginx "nginx -g 'daemon of…" 23 minutes ago Up 23 minutes 0.0.0.0:32768->80/tcp condescending_wilbur
[root@zizhen02 ~]# docker ps -l
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
5cb5e2fb6d11 nginx "nginx -g 'daemon of…" 23 seconds ago Up 22 seconds 192.168.1.107:8000->80/tcp mynginx
[root@zizhen02 ~]# curl 192.168.1.107:8000
<!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>
#
[root@zizhen02 ~]# docker port mynginx
80/tcp -> 192.168.1.107:8000
[root@zizhen02 ~]# docker run -d -p 443:443 -p 8001:80 --name nginxv2 nginx
97b6ec6152522ef7d747d60e0d9b611fab741fd4a05e14baa645d1dd23c6d874
[root@zizhen02 ~]# docker ps -l
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
97b6ec615252 nginx "nginx -g 'daemon of…" 10 seconds ago Up 8 seconds 0.0.0.0:443->443/tcp, 0.0.0.0:8001->80/tcp nginxv2
[root@zizhen02 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
97b6ec615252 nginx "nginx -g 'daemon of…" 20 seconds ago Up 18 seconds 0.0.0.0:443->443/tcp, 0.0.0.0:8001->80/tcp nginxv2
5cb5e2fb6d11 nginx "nginx -g 'daemon of…" 8 minutes ago Up 8 minutes 192.168.1.107:8000->80/tcp mynginx
2ce4f13ed654 nginx "nginx -g 'daemon of…" 32 minutes ago Up 32 minutes 0.0.0.0:32768->80/tcp condescending_wilbur
[root@zizhen02 ~]# docker port ngixv2
Error: No such container: ngixv2
[root@zizhen02 ~]# docker port nginxv2
443/tcp -> 0.0.0.0:443
80/tcp -> 0.0.0.0:8001
[root@zizhen02 ~]#
#