±à¼ÍƼö: |
±¾ÎÄÀ´×ÔÓÚcsdn£¬ÊµÀý½âÎöDockerÍøÂç¹ÜÀí»úÖÆ,½éÉÜDockerĬÈϵÄÍøÂ緽ʽ,²¢´´½¨×Ô¼ºµÄÍøÂçÇŽӷ½Ê½,½«¿ª·¢µÄÈÝÆ÷Ìí¼ÓÖÁ×Ô¼ºÐ½¨µÄÍøÂç,Ìá¸ßDockerÍøÂ簲ȫºÍͨÐÅ. |
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1.¸ø×Ô¼ºµÄdocker (Dcoker1.12GA)ÈÝÆ÷Æð¸öÃû³Æ
¸ødockerÃû³ÆµÄºÃ´¦ÊÇ:
- ÈÝÒ×¼Ç
- ¿ÉÒÔͨ¹ýÌØÊâÃüÁî,ʹµÃÃû³Æ¿ÉÒÔÔÚÈÝÆ÷ºÍÈÝÆ÷Ö®¼äʹÓÃ
1.1.²é¿´dockerÒѾ´æÔڵľµÏñ
wxl@wxl-pc:~$
docker images |

1.2.Ñ¡Ôñtraining/webappÕâ¸ö¾µÏñ,ͨ¹ý¨CnameÃüÁîÉèÖÃÃû³Æ
wxl@wxl-pc:~$
docker run -d -P --name wangxiaoleiweb training/webapp
python app.py |
×îºóÒ»ÐпÉÒÔ¿´µ½wangxiaoleiwebÒѾÃüÃû³É¹¦

¿ÉÒÔʹÓÃdocker inspectͨ¹ý¸Õ¸ÕÉèÖõÄÃû³ÆÀ´²é¿´wangxiaoleiweb
wxl@wxl-pc:~$
docker inspect wangxiaoleiweb |

1.3.ɾ³ýdockerÃû³Æ,dockerµÄÃû³Æ¶¼ÊÇΨһµÄ,¼´Ò»µ«Ê¹ÓÃÁ˾Ͳ»ÄÜÔÚÁíÒ»¸ö¾µÏñʹÓøÃÃû³Æ,¿ÉÒÔɾ³ýºóÖØÐÂÃüÃû.(ֻɾ³ýÃû×Ö,¾µÏñ²»»á±»É¾³ý)

2.ĬÈϵÄÈÝÆ÷µÄÍøÂç
2.1.Dockerͨ¹ýÍøÂçÇý¶¯(network driver),ĬÈÏÍøÂçÇý¶¯·Ö±ðÊÇÇŽÓ(bridge)ºÍ¸²¸Ç(overlay)Á½ÖÖ.

Ϊһ¸öÈÝÆ÷ÇŽÓÍøÂç
wxl@wxl-pc:~$
docker run -itd --name =networktest ubuntu:14.04
2a433c9467d3d35474 daa544dcac665ecc4b71b202b8 2d0bd59049f7d52e397f |
wxl@wxl-pc:~$
docker network inspect bridge
[
{ "Name": "bridge",
"Id": "7f6b9cbd3eece7301 d196363b5250c44fd0b 275f3c3d38a952 af2ad8b2fd38c2",
"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, "Containers":
{ "2a433c9467d3d35474daa 544dcac665ecc4b71b 202b82d0bd590 49f7d52e397f":
{ "Name": "networktest",
"EndpointID": "d0b94ec934b390784faa 5ad8946e9ba6031afe446 7889e1f7fe0eda5d79deac1",
"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": {}
}
] |
¿ÉÒÔ¿´µ½Í¨¹ý¼ì²éÍøÂç¿ÉÒÔ¿´µ½ÈÝÆ÷µÄIPµØÖ·,Ãû³ÆµÈÐÅÏ¢.
2.2.´ÓÍøÂçÖÐɾ³ýij¸öÈÝÆ÷,¿ÉÒÔͨ¹ý¸ÃÈÝÆ÷µÄÍøÂçÃû³Æ,ÈÝÆ÷Ãû³Æ,idÀ´×÷Ϊɾ³ýµÄ±êʾ,µ«ÊÇͨ¹ýÍøÂçÃû³ÆÊÇ·½±ãµÄ,Èçnetworktest
wxl@wxl-pc:~$
docker network disconnect bridge networktest |
ÔÙÓÃdocker network inspect bridge»á·¢ÏÖÒѾûÓÐnetworktestÐÅÏ¢ÁË
3.×Ô¶¨ÒåÈÝÆ÷µÄÍøÂç
ÈÝÆ÷µÄÍøÂç(network)ÊÇÓÃÀ´¸ôÀëÈÝÆ÷ºÍÈÝÆ÷Ö®¼ä»òÕßÍøÂçÓëÍøÂçÖ®¼äµÄ·½·¨,ËùÒÔ,ËùÒÔÎÒÃÇͨ¹ý½¨Á¢ÍøÂçÀ´¸ôÀëÈÝÆ÷.ÆäÖÐ,ÄÚÖõÄbridgeÍøÂçÊÇÎÞ·¨É¾³ýµÄ.
3.1.´´½¨ÍøÂç
Docker Engine Ö§³ÖÁ½ÖÖÍøÂçÇŽÓÍøÂç(bridge network)ºÍ¸²¸ÇÍøÂç(overlay
network),ÇŽӵÄÍøÂç¾ÖÏÞÓÚµ¥¸öÖ÷»úÔËÐеÄDocker Engine,¶ø¸²¸ÇÍøÂç¿ÉÒÔ°üº¬¶à¸öÖ÷»ú.
wxl@wxl-pc:~$
docker network create -d bridge my-bridge-network
3bfde1ba62a75e3823 6517f4f0731f48c281cec 107e976039773be134968c453 |
ÆäÖÐ,-dָʹÓÃDockerbridge(ÇŽÓ)·½Ê½µÄÍøÂç,Èç¹ûûÓмÓĬÈϵÄÒ²ÊÇÇŽÓÍøÂç.
ͨ¹ýdocker network lsÀ´²é¿´ÒѾ´´½¨ºÃµÄÍøÂç

3.2.½«Ò»¸öÈÝÆ÷Ìí¼ÓÖÁд´½¨µÄÍøÂçÖÐ
#ÕâÀï´´½¨ÁËÒ»¸ödbµÄÈÝÆ÷(Èô±¾µØÃ»ÓиþµÏñ»á×Ô¶¯ÀÈ¡)
wxl@wxl-pc:~$ docker run -d --network=my-bridge-network
--name db training/postgres |
ͨ¹ýinspectÃüÁî²é¿´ÒѾÌí¼ÓÖÁÍøÂçµÄdbÈÝÆ÷
wxl@wxl-pc:~$
docker inspect --format= '{{json .NetworkSettings.Networks}}'
db
{"my-bridge-network": {"IPAMConfig":null,"Links":null,
"Aliases":["237e0f7060b6"],
"NetworkID":"3bfde1ba62a75e3823 6517f4f0731f48c281 cec107e976039773be1 34968c453"
,"EndpointID":" 33516faca38c0f76b d2c6ebb6e8c2574c62e242 d5a0c10b77c49e14 b2549f3e5",
"Gateway":" 172.18.0.1"," IPAddress":"172.18.0.2", "IPPrefixLen":16
,"IPv6Gateway":"", "GlobalIPv6Address": "",
"GlobalIPv6PrefixLen" :0, "MacAddress":" 02:42:ac:12:00:02"}}
|
3.3.ͨ¹ýpingµÄ·½Ê½ÑéÖ¤ÍøÂçÁ¬Í¨ÐÔ,½«Á½¸öÈÝÆ÷(dbÈÝÆ÷ºÍwebÈÝÆ÷)´Ó²»Í¬µÄÍøÂç,·ÅÖÃͬһ¸öÍøÂç.
3.3.1.°Ñtraining/webappÈÝÆ÷ÃüÃûΪweb,·½±ãºóÐø²Ù×÷
wxl@wxl-pc:~$
docker run -d --name web training/webapp python
app.py
8f12cfaaedda2b348bef437 fa2eeed19ef69ad07 cd98aa72e0c2113710413e6f
|
3.3.2.²é¿´webÈÝÆ÷µÄip
wxl@wxl-pc:~$
docker inspect --format= '{{range .NetworkSettings.Networks}} {{.IPAddress}}{{end}}'
web
172.17.0.2
|
3.3.3.½øÈëdbÈÝÆ÷²¢ÇÒ³¢ÊÔpingÒ»ÏÂwebÈÝÆ÷,·¢ÏÖÊÇping²»Í¨,ctrl+cÖÕÖ¹ping,ÈçÏÂͼ
#½øÈëdbÈÝÆ÷
wxl@wxl-pc:~$ docker exec -it db bash
#Ê״γ¢ÊÔping webÈÝÆ÷
root@237e0f7060b6:/# ping 172.17.0.2
PING 172.17.0.2 (172.17.0.2) 56(84) bytes of
data.
^C
--- 172.17.0.2 ping statistics ---
24 packets transmitted, 0 received, 100% packet
loss, time 23183ms
root@237e0f7060b6:/# exit |

3.3.4.ÏÖÔÚ,½«webÈÝÆ÷Ìí¼ÓÖÁdbÈÝÆ÷µÄÍøÂç(¼´my-bridge-network),È»ºóÔÚping,¼´¿Épingͨ
wxl@wxl-pc:~$
docker network connect my-bridge-network web
|
#ÔٴνøÈëdbÈÝÆ÷
wxl@wxl-pc:~$ docker exec -it db bash
#ping webÈÝÆ÷,·¢ÏÖÒѾ¿ÉÒÔpingͨ
root@237e0f7060b6:/# ping web
PING web (172.18.0.3) 56(84) bytes of data.
64 bytes from web.my-bridge-network (172.18.0.3):
icmp_seq=1 ttl=64 time=0.097 ms
64 bytes from web.my-bridge-network (172.18.0.3):
icmp_seq=2 ttl=64 time=0.110 ms
64 bytes from web.my-bridge-network (172.18.0.3):
icmp_seq=3 ttl=64 time=0.109 ms
^C
--- web ping statistics ---
3 packets transmitted, 3 received, 0% packet
loss, time 1998ms
rtt min/avg/max/mdev = 0.097/0.105/0.110/0.010
ms
|

¿É¼û,²»Í¬µÄÈÝÆ÷ÔÚ²»Í¬µÄÍøÂçÊÇ¿ÉÒÔÆðµ½¸ôÀë×÷ÓõÄ,ËùÒÔ,×Ô¶¨ÒåÒ»¸öÍøÂç¿ÉÒÔ±£Ö¤ÈÝÆ÷ºÍÈÝÆ÷Ö®¼äͨÐŰ²È«.
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