Centos 6 Docker配置橋接網路

為了使本網中的機器和Docker容器更方便的通訊，我們經常會有將Docker容器配置到和主機同一網段的需求。這個需求其實很容易實現，我們只要將Docker容器和宿主機的網卡橋接起來，再給Docker容器配上IP就可以了。

Centos 6按照下面的方法操作（6與7的操作有所不同）

[root@localhost ~]# cd /etc/sysconfig/network-scripts/[root@localhost network-scripts]# lsifcfg-eth0   ifdown-ib    ifdown-ppp     ifup-aliases  ifup-ipv6   ifup-ppp       init.ipv6-globalifcfg-lo     ifdown-ippp  ifdown-routes  ifup-bnep     ifup-isdn   ifup-routes    net.hotplugifdown       ifdown-ipv6  ifdown-sit     ifup-eth      ifup-plip   ifup-sit       network-functionsifdown-bnep  ifdown-isdn  ifdown-tunnel  ifup-ib       ifup-plusb  ifup-tunnel    network-functions-ipv6ifdown-eth   ifdown-post  ifup           ifup-ippp     ifup-post   ifup-wireless[root@localhost network-scripts]# cp ifcfg-eth0 ifcfg-br0

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[root@localhost network-scripts]# vi ifcfg-eth0DEVICE=eth0HWADDR=00:0C:29:DB:B2:28TYPE=EthernetUUID=b2268aab-fa2e-49e9-bd67-2572f29e5790ONBOOT=yesNM_CONTROLLED=yesBOOTPROTO=staticIPADDR=192.168.1.179NETMASK=255.255.255.0GATEWAY=192.168.1.1DNS1=114.114.114.114DNS2=8.8.4.4

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增加BRIDGE=br0，刪除IPADDR、NETMASK、GATEWAY、DNS

DEVICE=eth0HWADDR=00:0C:29:DB:B2:28TYPE=EthernetUUID=b2268aab-fa2e-49e9-bd67-2572f29e5790ONBOOT=yesBRIDGE=br0BOOTPROTO=none#IPADDR=192.168.1.179#NETMASK=255.255.255.0#GATEWAY=192.168.1.1#DNS1=114.114.114.114#DNS2=8.8.4.4

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儲存退出

[root@localhost network-scripts]# vi ifcfg-br0DEVICE=eth0HWADDR=00:0C:29:DB:B2:28TYPE=EthernetUUID=b2268aab-fa2e-49e9-bd67-2572f29e5790ONBOOT=yesNM_CONTROLLED=yesBOOTPROTO=staticIPADDR=192.168.1.179NETMASK=255.255.255.0GATEWAY=192.168.1.1DNS1=114.114.114.114DNS2=8.8.4.4

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修改DEVICE為br0，Type為Bridge，把eth0的網路設定設定到這裡來

DEVICE=br0TYPE=BridgeONBOOT=yesBOOTPROTO=staticIPADDR=192.168.1.179NETMASK=255.255.255.0GATEWAY=192.168.1.1DNS1=114.114.114.114DNS2=8.8.4.4

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儲存退出

[root@localhost network-scripts]# service network restart

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這一步我出現了問題，不過重啟宿主機後就OK了。

[root@localhost ~]# ifconfigbr0       Link encap:Ethernet  HWaddr 00:0C:29:DB:B2:28          inet addr:192.168.1.179  Bcast:192.168.1.255  Mask:255.255.255.0          inet6 addr: fe80::20c:29ff:fedb:b228/64 Scope:Link          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1          RX packets:137 errors:0 dropped:0 overruns:0 frame:0          TX packets:93 errors:0 dropped:0 overruns:0 carrier:0          collisions:0 txqueuelen:0          RX bytes:13745 (13.4 KiB)  TX bytes:11095 (10.8 KiB)docker0   Link encap:Ethernet  HWaddr C6:01:70:AF:C6:E4          inet addr:172.17.42.1  Bcast:0.0.0.0  Mask:255.255.0.0          inet6 addr: fe80::c401:70ff:feaf:c6e4/64 Scope:Link          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1          RX packets:0 errors:0 dropped:0 overruns:0 frame:0          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0          collisions:0 txqueuelen:0          RX bytes:0 (0.0 b)  TX bytes:468 (468.0 b)eth0      Link encap:Ethernet  HWaddr 00:0C:29:DB:B2:28          inet6 addr: fe80::20c:29ff:fedb:b228/64 Scope:Link          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1          RX packets:137 errors:0 dropped:0 overruns:0 frame:0          TX packets:101 errors:0 dropped:0 overruns:0 carrier:0          collisions:0 txqueuelen:1000          RX bytes:15663 (15.2 KiB)  TX bytes:11959 (11.6 KiB)lo        Link encap:Local Loopback          inet addr:127.0.0.1  Mask:255.0.0.0          inet6