{"id":526,"date":"2020-06-12T10:52:20","date_gmt":"2020-06-12T02:52:20","guid":{"rendered":"https:\/\/www.funnymuddy.com\/?p=526"},"modified":"2020-06-12T11:51:39","modified_gmt":"2020-06-12T03:51:39","slug":"openstack%e7%9a%84%e7%bd%91%e7%bb%9c","status":"publish","type":"post","link":"https:\/\/www.funnymuddy.com\/?p=526","title":{"rendered":"OpenStack\u7684\u7f51\u7edc"},"content":{"rendered":"\n

\u7f51\u7edc\u7c7b\u578b\u6709local\uff0cflat\uff0cvlan\uff0cvxlan\u3002\u8fd9\u4e9b\u4e0d\u540c\u7f51\u7edc\u7c7b\u578b\u7684\u5b9e\u73b0\u501f\u52a9\u4e8enetwork driver\uff0c\u6bd4\u5982Linux Bridge\u548cOpen vSwitch\u3002\u73af\u5883\u642d\u5efa\u9700\u8981\u591a\u4e2a\u7f51\u5361\uff0c\u63a7\u5236\u8282\u70b9\u6216\u7f51\u7edc\u8282\u70b9\u9700\u8981\u4e00\u4e2a\u6253\u901a\u5916\u7f51\uff08\u96c6\u7fa4\u5916\uff09\u7684\u7f51\u5361\u3002<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

local<\/h2>\n\n\n\n

local\u7f51\u7edc\u4e0d\u652f\u6301\u8de8\u8282\u70b9\uff0c\u6240\u6709\u7f51\u7edc\u5185\u7684\u865a\u62df\u673a\u901a\u8fc7bridge\u8054\u901a\u3002bridge\u4e0d\u4f1a\u901a\u8fc7\u7f51\u5361\u5bf9\u5916\u901a\u8baf\u3002
<\/p>\n\n\n\n

\"\"
Linux Bridge – local<\/figcaption><\/figure>\n\n\n\n

<\/p>\n\n\n\n

flat<\/h2>\n\n\n\n

flat\u7f51\u7edc\u548c\u7269\u7406\u7f51\u5361\u4e00\u5bf9\u4e00\u7ed1\u5b9a\u3002\u4e0d\u5b58\u5728\u4e00\u4e2a\u7269\u7406\u7f51\u5361\u80fd\u652f\u6301\u591a\u4e2aflat\u7f51\u7edc\u7684\u60c5\u51b5\u3002flat\u53ef\u4ee5\u8de8\u8282\u70b9\u3002<\/p>\n\n\n\n

\u6bcf\u4e00\u4e2aflat \u7f51\u7edc\u90fd\u6709\u4e00\u4e2adhcp\u670d\u52a1\uff0c\u5b9e\u9645\u4e0a\u662f\u5728\u7f51\u7edc\u63a7\u5236\u8282\u70b9\u4e0a\u7684\u4e00\u4e2a\u72ec\u6709\u7684dnsmasq\u8fdb\u7a0b\uff0c\u6bcf\u4e2a\u8fdb\u7a0b\u72ec\u5360\u4e00\u4e2a\u7f51\u7edcnamespace, \u4ee5\u4fbf\u4e3a\u67d0\u4e2aflat\u7f51\u7edc\u5355\u72ec\u670d\u52a1\u3002\u901a\u8fc7veth pair\u548cflat bridge\u76f8\u8fde\uff0c\u6253\u901a\u4e24\u4e2anamespace\u3002<\/p>\n\n\n\n

\u521b\u5efaflat\u7f51\u7edc\u5b9e\u4f8b\uff0copenstack\u4f1a\u6839\u636e\u8be5flat\u7f51\u7edc\u7684\u8bbe\u7f6e\u5206\u914d\u4e00\u4e2aport \u5305\u62ecip\u548cmac\uff0c\u5e76\u88abdhcp\u83b7\u53d6\uff0cnova\u4f1a\u7ed9vm VIF\u865a\u62df\u7f51\u5361\u5206\u914d\u8fd9\u4e2amac\u3002\u83b7\u53d6ip\u7684\u8fc7\u7a0b\u662f\u8fd9\u6837\u7684\uff0cdhcp\u8fdb\u7a0b\u901a\u8fc7\u865a\u62df\u7f51\u5361\u5bf9\u76d1\u542c\u5230\u5b9e\u4f8b\u542f\u52a8\uff0cvm\u4f1a\u53d1\u5e7f\u64ad\u5230\u6574\u4e2aflat\u7f51\u7edc\uff0cdhcp\u7684\u865a\u62df\u7f51\u5361\u4f1a\u76d1\u542c\u5230\uff0cdhcp\u6839\u636e\u81ea\u5df1\u7684host\u6587\u4ef6\u548cmac\u67e5\u8be2\u5230\u5bf9\u5e94\u4fe1\u606f\uff0c\u7136\u540e\u5206\u914dip\u5b50\u7f51\u63a9\u7801\u548c\u5730\u5740\u79df\u7528\u671f\u9650\u3002\u4e0d\u540c\u8ba1\u7b97\u8282\u70b9\u4e0a\u7684\u5b9e\u4f8b\u53ef\u4ee5\u4e92\u76f8\u901a\u4fe1\uff0c\u6bcf\u4e2a\u8282\u70b9\u4e0a\u7684bridge\u540d\u79f0\u662f\u4e00\u6837\u7684\uff0c\u6bcf\u4e2aflat\u7f51\u7edc\u7ed1\u5b9a\u72ec\u5360\u4e00\u4e2a\u7f51\u5361\u3002<\/p>\n\n\n\n

\"\"
Linux Bridge – flat<\/figcaption><\/figure>\n\n\n\n

vlan<\/h2>\n\n\n\n

\u4e00\u4e2a\u7269\u7406\u7f51\u5361\u53ef\u4ee5\u652f\u6301\u591a\u4e2avlan\u3002vlan\u53ef\u4ee5\u662f\u5938\u8282\u70b9\u7684\uff0c\u6bcf\u4e2a\u8282\u70b9\u7684bridge\u540d\u5b57\u76f8\u540c\u3002bridge\u901a\u8fc7vlan\u7f51\u53e3eth1.100\u4e0e\u7269\u7406\u7f51\u5361\u8054\u901a\u3002\u4e0d\u540cvlan\u53ef\u4ee5\u901a\u8fc7\u8def\u7531router\u4e92\u901a\uff0c\u53ef\u4ee5\u662f\u7269\u7406\u8def\u7531\u5668\uff0c\u63a5\u5230\u4ea4\u6362\u673a\u4e4b\u5916\uff0c\u4e0a\u9762\u914d\u7f6e\u9700\u8981\u6253\u901a\u7684\u6240\u6709vlan\u7684\u7f51\u5173\u3002\u4e5f\u53ef\u4ee5\u662f\u865a\u62df\u8def\u7531\uff0c\u9996\u5148\u5efa\u7acb\u4e00\u4e2a\u865a\u62df\u7f51\u7edc\uff0c\u53ef\u4ee5\u662fflat\u7c7b\u578b\u7684\uff0c\u901a\u8fc7\u7269\u7406\u7f51\u5361\u8054\u901a\u5916\u7f51\uff0c\u5b58\u5728\u4e8e\u5355\u72ec\u7684network namespace\uff0c\u7531veth pair\u6253\u901a\u548cvlan bridge\u7684\u901a\u4fe1\u3002\u7f51\u5173\u914d\u7f6e\u5728\u8def\u7531\u5230bridge\u7684tap\u4e0a\u3002<\/p>\n\n\n\n

\u548c\u8def\u7531\u76f8\u8fde\u7684\u6240\u8c13\u7684\u5916\u90e8\u7f51\u7edc\uff0c\u7ed1\u5b9a\u4e00\u4e2a\u63a7\u5236\u8282\u70b9\u7684\u7f51\u5361\uff0c\u4ee5\u540e\u6240\u6709\u5bf9\u5916\u901a\u4fe1\u90fd\u901a\u8fc7\u8fd9\u4e2a\u7f51\u7edc\uff0c\u7f51\u7edc\u548c\u7f51\u7edc\u4e4b\u95f4\u7528veth pair\u6253\u901a\u3002<\/p>\n\n\n\n

\"\"
Linux Bridge – vlan<\/figcaption><\/figure>\n\n\n\n

\u901a\u8fc7\u8def\u7531\u548c\u76f8\u8fde\u63a5\u7684\u5916\u7f51\u53ef\u4ee5\u8bbe\u7f6e\u67d0\u4e2avm\u7684floating ip\uff0cfloating IP \u662f\u914d\u7f6e\u5728 router \u63d0\u4f9b\u7f51\u5173\u7684\u5916\u7f51 interface \u4e0a\u7684\uff0c\u800c\u975e instance \u4e2d\u3002\u6240\u4ee5\u8def\u7531\u4fdd\u5b58\u6709floating ip\u548c\u7f51\u5185ip\u7684\u6620\u5c04\uff0c\u662f\u4e00\u79cd\u9759\u6001NAT\u3002floating ip\u65b9\u4fbf\u5916\u7f51\u76f4\u63a5\u8bbf\u95ee\u5185\u7f51vm\u3002<\/p>\n\n\n\n

\u5982\u679c\u6ca1\u6709floating ip\uff0c\u5411\u5916\u7684\u6d41\u91cf\uff0c\u8def\u7531\u4f1a\u628a\u5185\u7f51ip\u8f6c\u4e3a\u81ea\u5df1\u7684\u5916\u7f51ip\uff0c\u5f53\u6d41\u91cf\u8fd4\u56de\u65f6\uff0c\u8def\u7531\u4f1a\u627e\u5230\u76f8\u5e94\u7684\u5185\u7f51ip\uff0c\u8fd9\u5c31\u662f\u6240\u8c13\u7684source NAT\u3002<\/p>\n\n\n\n

\u8def\u7531\u9ed8\u8ba4\u7f51\u5173\u662f\u5916\u7f51\u7f51\u5173\uff0c\u6240\u6709\u5185\u7f51\u865a\u62df\u673a\u8bbf\u95ee\u9664\u4e86\u5185\u7f51\u7684\u6d41\u91cf\u90fd\u4f1a\u8d70\u5411\u8fd9\u4e2a\u9ed8\u8ba4\u7684\u7f51\u5173\u3002floating IP \u914d\u7f6e\u5230 router \u7684\u5916\u7f51 interface qg-b8b32a88-03 \u4e0a\u3002<\/p>\n\n\n\n

\u5176\u4ed6\u7684\u6bd4\u5982dhcp\u548cflat\u7f51\u7edc\u5dee\u4e0d\u591a\u3002
<\/p>\n\n\n\n

\"\"
Linux Bridge – vlan \u8def\u7531 \u5916\u7f51 \u4e24\u4e2a\u5185\u7f51\u7684\u903b\u8f91\u5173\u7cfb\u56fe<\/figcaption><\/figure>\n\n\n\n

<\/p>\n\n\n\n

vxlan<\/h2>\n\n\n\n

\u7531\u901a\u9053\u6280\u672f\u5b9e\u73b0\u7684\u865a\u62df\u7f51\u7edc\u3002\u662f\u57fa\u4e8e\u4e09\u5c42\u7f51\u7edc\u534f\u8bae\u5b9e\u73b0\u7684\u7684\u4e8c\u5c42\u534f\u8bae\u3002\u6838\u5fc3\u662fvtep\uff0c\u4e00\u79cd\u865a\u62df\u7f51\u5361\u3002\u57fa\u672c\u601d\u8def\uff0c\u7531vtep\u5c01\u88c5\u4e8c\u5c42\u534f\u8bae\u5305\u6253\u4e0avxlan\u6807\u7b7e\uff0c\u5e76\u7528ip+udp\u5c01\u88c5\uff0c\u901a\u8fc7\u539f\u59cbip\u548c\u7ec8\u70b9ip\u6253\u901a\u901a\u4fe1\u3002\u6240\u4ee5\u662f\u4e00\u79cd\u57fa\u4e8e\u7f51\u7edc\u4e4b\u4e0a\u7684\u865a\u62df\u7f51\u7edc\u3002<\/p>\n\n\n\n

vxlan\u662f\u4e00\u79cd\u865a\u62df\u4e8c\u5c42\u7f51\u7edc\uff0c\u652f\u6301arp\uff0c\u4e0d\u8fc7\u5728openstack\u4e2d\u4e0d\u9700\u8981\u5e7f\u64ad\uff0c\u56e0\u4e3a\u6709\u4ee3\u7406\u4f1a\u76f4\u63a5\u628aip mac\u7684\u4fe1\u606f\u5206\u4eab\u7ed9\u865a\u62df\u673a\u3002<\/p>\n\n\n\n

\u501f\u52a9linux bridge \u6216 open vswitch\u53ef\u4ee5\u5b9e\u73b0vxlan\u3002\u548cvlan\u76f8\u6bd4\uff0cvxlan\u9002\u5408\u66f4\u5927\u89c4\u6a21\u7684\u96c6\u7fa4\u3002\u5176\u4ed6\u7684\u6bd4\u5982dhcp\u548crouter\u57fa\u672c\u548cvlan\u4e00\u6837\u3002
<\/p>\n\n\n\n

\"\"
Linux Bridge vxlan<\/figcaption><\/figure>\n\n\n\n

<\/p>\n\n\n\n

Security Group\u548cFWaaS<\/h2>\n\n\n\n

\u8fd9\u4e24\u79cd\u90fd\u662fOpenStack\u7684\u5b89\u5168\u7b56\u7565\uff0c\u90fd\u662f\u901a\u8fc7iptables\u6765\u5b9e\u73b0\u7684\uff0c\u524d\u8005\u662f\u5bf9\u7279\u5b9a\u865a\u62df\u673a\u6765\u8bbe\u7f6e\u7684\uff0c\u540e\u8005\u662f\u5bf9\u6574\u4e2a\u5b9a\u5236\u7f51\u7edc\u7684subnet\u6307\u5b9a\u7684\u5b89\u5168\u7b56\u7565\u3002\u53ef\u7ed3\u5408\u4f7f\u7528\u3002<\/p>\n\n\n\n

OpenStack LBaaS<\/h2>\n\n\n\n

OpenStack Loadbalance as a Service\u3002\u65b9\u4fbf\u642d\u5efalb\u96c6\u7fa4\uff0c\u9ed8\u8ba4HAProxy\uff0c\u53ef\u4ee5\u9009\u62e9\u5176\u4ed6\u3002<\/p>\n\n\n\n

\u9700\u8981\u4e00\u4e2alb server\u7684\u865a\u62df\u673a\uff0c\u8fd9\u4e2alb server\u6709\u4e00\u4e2aVIP\uff0c\u662f\u5c5e\u4e8e\u548c\u96c6\u7fa4(web server)\u76f8\u540c\u7f51\u6bb5\u7684IP\uff0c\u5728\u5916\u56f4\u8def\u7531\u914d\u7f6efloating ip\uff0c\u8fd9\u6837\u96c6\u7fa4\u5916\u53ef\u901a\u8fc7floating ip\u8bbf\u95eelb\u3002OpenStack\u754c\u9762\u652f\u6301lb\u7684\u5404\u79cd\u7b56\u7565\uff0c\u7b2c\u4e00\u6b21\u8bbf\u95ee\u7684\u7b56\u7565\uff0c\u6bd4\u5982round robin\uff0cleast connection\uff0csource ip\u3002\u4e4b\u540e\u7684session persistence\u7b56\u7565\u6bd4\u5982source ip\uff0chttp cookie\uff0capp cookie\u7b49\u3002\u540e\u4e24\u8005\u662f\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef\u7279\u5b9a\u7684cookie\uff0c\u6bd4\u5982srv\uff0c\u8bb0\u5f55\u4e0a\u6b21\u8fde\u63a5\u7684server\u4fe1\u606f\u3002<\/p>\n\n\n\n

Open vSwitch<\/h2>\n\n\n\n

\u548cLinux Bridge\u4e00\u6837\uff0cOpen vSwitch\u4e5f\u53ef\u7528\u6765\u5b9e\u73b0\u4e0d\u540c\u7f51\u7edc\u7c7b\u578b\u3002\u4e0d\u540c\u7684\u662f\uff0cOVS\u6709\u81ea\u5df1\u4e13\u6709\u7684\u7f51\u6865\u4ee5\u53ca\u5229\u7528flow rule\u6765\u9694\u79bbvlan\uff0c\u800c\u4e0d\u662fLinux Bridge\u7684veth1.100, eth1.101\u7b49vlan interface\u3002
– br-int(integration)\uff0c\u6253\u901ainstance\u548c\u5176\u4ed6\u865a\u62df\u7f51\u7edc\u8bbe\u5907
– br-ex(external)\uff0c\u548c\u7f51\u5361\u76f4\u8fde\uff0c\u6253\u901a\u548c\u5916\u7f51\u7684\u901a\u9053
– br-tun(tunnel)\uff0c\u53ea\u9002\u7528\u4e8e\u57fa\u4e8etunnel\u6280\u672f\u7684vxlan\u548cGRE\u7f51\u7edc<\/p>\n\n\n\n

\"\"
OVS vlan<\/figcaption><\/figure>\n\n\n\n


<\/p>\n\n\n\n

\"\"
OVS vxlan<\/figcaption><\/figure>\n\n\n\n

\u6ce8\uff1a\u539f\u521b\u3002\u56fe\u8868\u6765\u6e90\u4e8eCloudMan<\/p>\n\n\n\n

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<\/div>","protected":false},"excerpt":{"rendered":"

\u7f51\u7edc\u7c7b\u578b\u6709local\uff0cflat\uff0cvlan\uff0cvxlan\u3002\u8fd9\u4e9b\u4e0d\u540c\u7f51\u7edc\u7c7b\u578b\u7684\u5b9e\u73b0\u501f\u52a9\u4e8enetwork driver… \u9605\u8bfb\u66f4\u591a »OpenStack\u7684\u7f51\u7edc<\/span><\/a><\/p>\n

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