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分类: 虚拟化

2018-03-21 16:27:51

Docker Networking using Host network
Host Network
描述:使用Docker host的网络作为container的网络。Docker容器使用namespace和cgroup技术,命名空间将会把资源(网络,存储,进程命名空间)进行隔离,使用这种方式,network将不会做隔离,直接使用host的网络。
How to use host network?
  • 查看目前docker host中的网络
[root@localhost ~]# docker network ls
NETWORK ID NAME DRIVER SCOPE
2b65f9fa598b bridge bridge local
726cbc66240c host host local
f80e6afec2c4 none null local
  • 运行一个容器使用host network
[root@localhost ~]# docker run --rm -dit --network host --name my_nginx nginx
Unable to find image 'nginx:latest' locally
latest: Pulling from library/nginx
2a72cbf407d6: Pull complete
eccc107d7abd: Pull complete
76aa3935d77c: Pull complete
Digest: sha256:f6e250eaa36af608af9ed1e4751f063f0ca0f5310b1a5d3ad9583047256f37f6
Status: Downloaded newer image for nginx:latest
9966b671587a12c53885898d0b1ff724aef8edec910055efa9f57042bb214ee6
  • 查看主机的网络信息
1: lo: mtu 65536 qdisc noqueue state UNKNOWN qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens9: mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 52:54:00:6b:cc:77 brd ff:ff:ff:ff:ff:ff
inet 192.168.122.206/24 brd 192.168.122.255 scope global dynamic ens9
valid_lft 3264sec preferred_lft 3264sec
inet6 fe80::a473:1249:7f61:f5ea/64 scope link
valid_lft forever preferred_lft forever
3: eth0: mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 52:54:00:97:1d:2e brd ff:ff:ff:ff:ff:ff
inet 192.168.122.51/24 brd 192.168.122.255 scope global dynamic eth0
valid_lft 3179sec preferred_lft 3179sec
inet6 fe80::5054:ff:fe97:1d2e/64 scope link
valid_lft forever preferred_lft forever
4: docker0: mtu 1500 qdisc noqueue state DOWN
link/ether 02:42:fb:73:ee:25 brd ff:ff:ff:ff:ff:ff
inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
valid_lft forever preferred_lft forever

[root@localhost ~]# netstat -pln|grep 80
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 16413/nginx: master

[root@localhost ~]# ps -ef|grep 16413
root 16413 16398 0 03:39 pts/0 00:00:00 nginx: master process nginx -g daemon off;
101 16434 16413 0 03:39 pts/0 00:00:00 nginx: worker process
  • 在主机上访问web
[root@localhost ~]# curl http://localhost:80
Welcome to nginx!

Welcome to nginx!

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

working. Further configuration is required.


For online documentation and support please refer to

Commercial support is available at

Thank you for using nginx.


[root@localhost libvirt]# curl http://192.168.122.206:80
Welcome to nginx!

Welcome to nginx!

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

working. Further configuration is required.


For online documentation and support please refer to

Commercial support is available at

Thank you for using nginx.

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