{"id":14850,"date":"2024-08-21T13:48:17","date_gmt":"2024-08-21T05:48:17","guid":{"rendered":"https:\/\/www.simcentric.com\/?p=14850"},"modified":"2024-08-21T13:49:32","modified_gmt":"2024-08-21T05:49:32","slug":"what-is-an-elastic-public-ip-and-what-does-it-do","status":"publish","type":"post","link":"https:\/\/www.simcentric.com\/tc\/hong-kong-dedicated-server-tc\/what-is-an-elastic-public-ip-and-what-does-it-do\/","title":{"rendered":"\u4ec0\u9ebc\u662f\u5f48\u6027\u516c\u7db2IP\uff1f\u6709\u4ec0\u9ebc\u4f5c\u7528\uff1f"},"content":{"rendered":"
\n

\u89e3\u6790\u5f48\u6027\u516c\u7db2IP<\/strong><\/h2>\n

\u5728\u7db2\u8def\u67b6\u69cb\u9818\u57df\uff0c\u5f48\u6027\u516c\u7db2IP\uff08EIP\uff09\u5c0d\u6280\u8853\u611b\u597d\u8005\u548c\u5c08\u696d\u4eba\u58eb\u800c\u8a00\u90fd\u662f\u4e00\u500b\u904a\u6232\u898f\u5247\u6539\u8b8a\u8005\u3002\u4f46\u9019\u500b\u795e\u79d8\u7684\u6982\u5ff5\u7a76\u7adf\u662f\u4ec0\u9ebc\uff0c\u70ba\u4ec0\u9ebc\u5982\u679c\u4f60\u6df1\u5165\u7814\u7a76\u9999\u6e2f\u4f3a\u670d\u5668\u79df\u7528\u89e3\u6c7a\u65b9\u6848<\/a>\u6642\u61c9\u8a72\u5c0d\u5b83\u611f\u8208\u8da3\u5462\uff1f<\/p>\n

\u516c\u7db2IP vs. \u79c1\u6709IP<\/h3>\n

\u5728\u6df1\u5165\u63a2\u8a0e\u6211\u5011\u4e3b\u89d2\u7684\u5f48\u6027\u7279\u6027\u4e4b\u524d\uff0c\u8b93\u6211\u5011\u5148\u5feb\u901f\u56de\u9867\u4e00\u4e0bIP\u4f4d\u5740<\/a>\u3002\u516c\u7db2IP\u662f\u4f60\u901a\u5f80\u7db2\u969b\u7db2\u8def\u5ee3\u95ca\u5929\u5730\u7684\u9580\u7968\uff0c\u800c\u79c1\u6709IP\u5247\u662f\u672c\u5730\u7db2\u8def\u5167\u8a2d\u5099\u7684VIP\u901a\u884c\u8b49\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u5feb\u901f\u6bd4\u8f03\uff1a<\/p>\n

\r\n    \u516c\u7db2IP\uff1a\r\n    - \u5168\u7403\u552f\u4e00\r\n    - \u7531ISP\u5206\u914d\r\n    - \u793a\u4f8b\uff1a203.0.113.1\r\n\r\n    \u79c1\u6709IP\uff1a\r\n    - \u672c\u5730\u552f\u4e00\r\n    - \u7531\u672c\u5730\u7db2\u8def\u5206\u914d\r\n    - \u793a\u4f8b\uff1a192.168.0.1, 10.0.0.1\r\n    <\/code><\/pre>\n
\u5f48\u6027\u512a\u52e2\uff1aEIP\u7684\u7279\u5225\u4e4b\u8655<\/h3>\n
\u73fe\u5728\uff0c\u8b93\u6211\u5011\u4ecb\u7d39\u5f48\u6027\u516c\u7db2IP\u3002\u5b83\u4e0d\u50c5\u50c5\u662f\u4efb\u4f55\u516c\u7db2IP\uff1b\u5b83\u662fIP\u4f4d\u5740\u4e2d\u7684\u745e\u58eb\u8ecd\u5200\u3002EIP\u5e36\u4f86\u4e86\u9748\u6d3b\u6027\uff0c\u5141\u8a31\u4f60\u96a8\u6642\u5c07\u5176\u8207\u4e0d\u540c\u7684\u5be6\u4f8b\u6216\u7db2\u8def\u4ecb\u9762\u95dc\u806f\u548c\u89e3\u9664\u95dc\u806f\u3002\u9019\u7a2e\u5f48\u6027\u5728\u96f2\u74b0\u5883\u548c\u9999\u6e2f\u4f3a\u670d\u5668\u79df\u7528\u5834\u666f\u4e2d\u5c24\u70ba\u91cd\u8981\uff0c\u56e0\u70ba\u52d5\u614b\u8cc7\u6e90\u5206\u914d\u5728\u9019\u4e9b\u74b0\u5883\u4e2d\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n
\u5be6\u529b\u5c55\u73fe\uff1aEIP\u7684\u95dc\u9375\u529f\u80fd<\/strong><\/h2>\n
\u5f48\u6027\u516c\u7db2IP\u4e0d\u50c5\u50c5\u662f\u4e00\u500b\u82b1\u4fcf\u7684\u8853\u8a9e\uff1b\u5b83\u662f\u4e00\u500b\u529f\u80fd\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u6539\u8b8a\u4f60\u7684\u7db2\u8def\u7ba1\u7406\u65b9\u6cd5\uff0c\u7279\u5225\u662f\u5728\u9999\u6e2f\u4f3a\u670d\u5668\u79df\u7528\u74b0\u5883\u4e2d\u3002<\/p>\n
1.\u6700\u5927\u5316\u7db2\u8def\u8cc7\u6e90\u5229\u7528<\/h3>\n
EIP\u5141\u8a31\u9ad8\u6548\u4f7f\u7528IP\u8cc7\u6e90\u3002\u4f60\u53ef\u4ee5\u52d5\u614b\u5206\u914dIP\u8cc7\u6e90\u5230\u9700\u8981\u7684\u5730\u65b9\uff0c\u800c\u4e0d\u662f\u5c07\u975c\u614bIP\u7d81\u5b9a\u5230\u9592\u7f6e\u7684\u5be6\u4f8b\u4e0a\u3002\u9019\u5728\u9999\u6e2f\u7af6\u722d\u6fc0\u70c8\u7684\u4f3a\u670d\u5668\u79df\u7528\u5e02\u5834\u4e2d\u7279\u5225\u6709\u76ca\uff0c\u56e0\u70ba\u8cc7\u6e90\u512a\u5316\u53ef\u4ee5\u986f\u8457\u5f71\u97ff\u6210\u672c\u548c\u6548\u80fd\u3002<\/p>\n
2.\u63d0\u5347\u4f3a\u670d\u5668\u7ba1\u7406\u9748\u6d3b\u6027<\/h3>\n
\u4f7f\u7528EIP\uff0c\u4f60\u7372\u5f97\u4e86IP\u79fb\u52d5\u6027\u7684\u8d85\u80fd\u529b\u3002\u9700\u8981\u5c07IP\u5f9e\u4e00\u500b\u5931\u6548\u7684\u5be6\u4f8b\u5207\u63db\u5230\u4e00\u500b\u5065\u5eb7\u7684\u5be6\u4f8b\u55ce\uff1f\u53ea\u9700\u5e7e\u500bAPI\u8abf\u7528\u5c31\u80fd\u5b8c\u6210\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u507d\u4ee3\u78bc\u7247\u6bb5\u4f86\u8aaa\u660e\uff1a<\/p>\n
\r\n    # \u5047\u8a2d\u6211\u5011\u4f7f\u7528\u96f2\u63d0\u4f9b\u5546\u7684SDK\r\n    import cloud_provider_sdk as cp\r\n\r\n    def reassign_eip(eip_id, new_instance_id):\r\n        try:\r\n            cp.disassociate_eip(eip_id)\r\n            cp.associate_eip(eip_id, new_instance_id)\r\n            print(\"EIP\u6210\u529f\u91cd\u65b0\u5206\u914d\")\r\n        except Exception as e:\r\n            print(f\"\u91cd\u65b0\u5206\u914dEIP\u6642\u51fa\u932f\uff1a{e}\")\r\n\r\n    # \u4f7f\u7528\u65b9\u6cd5\r\n    reassign_eip('eip-12345', 'i-67890')\r\n    <\/code><\/pre>\n
3.\u512a\u5316\u7db2\u8def\u5b89\u5168\u7b56\u7565<\/h3>\n
EIP\u901a\u904e\u5141\u8a31\u4f60\u5728\u4e0d\u66f4\u6539\u9762\u5411\u516c\u773e\u7684IP\u7684\u60c5\u6cc1\u4e0b\u66ff\u63db\u53d7\u640d\u5be6\u4f8b\uff0c\u589e\u52a0\u4e86\u4e00\u5c64\u984d\u5916\u7684\u5b89\u5168\u6027\u3002\u9019\u5c0d\u65bc\u5728\u9999\u6e2f\u4f3a\u670d\u5668\u79df\u7528\u74b0\u5883\u4e2d\u7dad\u8b77\u670d\u52d9\u9023\u7e8c\u6027\u540c\u6642\u89e3\u6c7a\u5b89\u5168\u554f\u984c\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n
EIP\u5be6\u6230\uff1a\u9999\u6e2f\u4f3a\u670d\u5668\u79df\u7528\u5834\u666f<\/strong><\/h2>\n
\u9999\u6e2f\u7684\u6230\u7565\u4f4d\u7f6e\u4f7f\u5176\u6210\u70ba\u4f3a\u670d\u5668\u79df\u7528\u670d\u52d9\u7684\u7406\u60f3\u5730\u9ede\u3002\u8b93\u6211\u5011\u63a2\u8a0e\u4e00\u4e0b\u5f48\u6027\u516c\u7db2IP\u5982\u4f55\u589e\u5f37\u9019\u4e9b\u670d\u52d9\u3002<\/p>\n
1.\u652f\u6301\u8de8\u5340\u57df\u8ca0\u8f09\u5e73\u8861<\/h3>\n
EIP\u5728\u591a\u5340\u57df\u8a2d\u7f6e\u4e2d\u8868\u73fe\u51fa\u8272\u3002\u60f3\u50cf\u4e00\u4e0b\u4f60\u6b63\u5728\u9999\u6e2f\u548c\u9130\u8fd1\u5730\u5340\u4e4b\u9593\u9032\u884c\u6d41\u91cf\u8ca0\u8f09\u5e73\u8861\u3002\u4f7f\u7528EIP\uff0c\u4f60\u53ef\u4ee5\u901a\u904e\u5c07IP\u91cd\u65b0\u5206\u914d\u7d66\u4e0d\u540c\u7684\u5340\u57df\u4f3a\u670d\u5668\u4f86\u8fc5\u901f\u91cd\u5b9a\u5411\u6d41\u91cf\uff0c\u78ba\u4fdd\u6700\u4f73\u6548\u80fd\u548c\u5197\u9918\u3002<\/p>\n
\r\n    # \u4f7f\u7528EIP\u9032\u884c\u8de8\u5340\u57df\u8ca0\u8f09\u5e73\u8861\u7684\u507d\u4ee3\u78bc\r\n    def balance_load(traffic_threshold, hk_server, sg_server):\r\n        hk_load = get_server_load(hk_server)\r\n        if hk_load > traffic_threshold:\r\n            eip = get_eip(hk_server)\r\n            detach_eip(eip, hk_server)\r\n            attach_eip(eip, sg_server)\r\n            log(\"\u6d41\u91cf\u5df2\u91cd\u5b9a\u5411\u5230\u65b0\u52a0\u5761\u4f3a\u670d\u5668\")\r\n    \r\n    # \u5b9a\u671f\u904b\u884c\u6b64\u6aa2\u67e5\r\n    schedule.every(5).minutes.do(balance_load, 80, \"hk-server-01\", \"sg-server-01\")\r\n    <\/code><\/pre>\n
2.\u4fc3\u9032\u707d\u96e3\u5fa9\u539f\u548c\u9ad8\u53ef\u7528\u6027<\/h3>\n
\u5728\u9999\u6e2f\u4f3a\u670d\u5668\u79df\u7528\u7684\u5feb\u7bc0\u594f\u4e16\u754c\u4e2d\uff0c\u505c\u6a5f\u662f\u4e0d\u53ef\u63a5\u53d7\u7684\u3002EIP\u5141\u8a31\u5728\u707d\u96e3\u5fa9\u539f\u5834\u666f\u4e2d\u5feb\u901f\u6545\u969c\u8f49\u79fb\u3002\u5982\u679c\u4e3b\u5be6\u4f8b\u5931\u6557\uff0c\u4f60\u53ef\u4ee5\u8fc5\u901f\u5c07EIP\u6307\u5411\u5099\u7528\u5be6\u4f8b\uff0c\u4fdd\u6301\u9ad8\u53ef\u7528\u6027\u3002<\/p>\n
3.\u52a0\u901f\u5168\u7403\u696d\u52d9\u64f4\u5f35<\/h3>\n
\u5c0d\u65bc\u4ee5\u9999\u6e2f\u70ba\u5168\u7403\u64f4\u5f35\u8df3\u677f\u7684\u4f01\u696d\u800c\u8a00\uff0cEIP\u63d0\u4f9b\u4e86\u5728\u4e0d\u66f4\u6539\u516c\u7db2IP\u7684\u60c5\u6cc1\u4e0b\u8abf\u6574\u7db2\u8def\u914d\u7f6e\u7684\u9748\u6d3b\u6027\u3002\u9019\u5c0d\u65bc\u5728\u64f4\u5c55\u57fa\u790e\u8a2d\u65bd\u7684\u540c\u6642\u7dad\u8b77\u4e00\u81f4\u7684\u5916\u90e8\u7aef\u9ede\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n
EIP\u9078\u64c7\uff1a\u6280\u8853\u5c08\u696d\u4eba\u58eb\u7684\u6e05\u55ae<\/strong><\/h2>\n
\u70ba\u9999\u6e2f\u4f3a\u670d\u5668\u79df\u7528\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u5f48\u6027\u516c\u7db2IP\u8a2d\u7f6e\u9700\u8981\u4ed4\u7d30\u8003\u616e\u3002\u4ee5\u4e0b\u662f\u4f60\u9700\u8981\u8a18\u4f4f\u7684\u4e8b\u9805\uff1a<\/p>\n
1.\u983b\u5bec\u548c\u8a08\u8cbb\u6a21\u5f0f<\/h3>\n
\u4e0d\u540c\u7684\u63d0\u4f9b\u5546\u70baEIP\u63d0\u4f9b\u5404\u7a2e\u983b\u5bec\u9078\u9805\u548c\u8a08\u8cbb\u6a21\u5f0f\u3002\u5728\u9999\u6e2f\u7af6\u722d\u6fc0\u70c8\u7684\u4f3a\u670d\u5668\u79df\u7528\u5e02\u5834\u4e2d\uff0c\u5c07\u9019\u4e9b\u8207\u4f60\u7684\u6d41\u91cf\u6a21\u5f0f\u4fdd\u6301\u4e00\u81f4\u81f3\u95dc\u91cd\u8981\u3002\u8003\u616e\u4ee5\u4e0b\u6bd4\u8f03\uff1a<\/p>\n
\r\n    EIP\u8a08\u8cbb\u6a21\u5f0f\uff1a\r\n    1. \u6309\u983b\u5bec\u4ed8\u8cbb\uff1a\r\n       - \u512a\u9ede\uff1a\u6210\u672c\u53ef\u9810\u6e2c\r\n       - \u7f3a\u9ede\uff1a\u53ef\u80fd\u70ba\u672a\u5145\u5206\u5229\u7528\u7684\u983b\u5bec\u591a\u4ed8\u8cbb\r\n\r\n    2. \u6309\u6d41\u91cf\u4ed8\u8cbb\uff1a\r\n       - \u512a\u9ede\uff1a\u53ea\u70ba\u4f7f\u7528\u7684\u90e8\u5206\u4ed8\u8cbb\r\n       - \u7f3a\u9ede\uff1a\u6d41\u91cf\u6fc0\u589e\u6642\u6210\u672c\u53ef\u80fd\u98c6\u5347\r\n\r\n    3. \u6df7\u5408\u6a21\u5f0f\uff08\u983b\u5bec + \u8d85\u984d\u8cbb\u7528\uff09\uff1a\r\n       - \u512a\u9ede\uff1a\u5728\u53ef\u9810\u6e2c\u6027\u548c\u9748\u6d3b\u6027\u4e4b\u9593\u53d6\u5f97\u5e73\u8861\r\n       - \u7f3a\u9ede\uff1a\u6210\u672c\u4f30\u7b97\u8907\u96dc\r\n    <\/code><\/pre>\n
2.\u96f2\u670d\u52d9\u76f8\u5bb9\u6027<\/h3>\n
\u78ba\u4fdd\u4f60\u9078\u64c7\u7684EIP\u89e3\u6c7a\u65b9\u6848\u8207\u73fe\u6709\u96f2\u670d\u52d9\u7121\u7e2b\u6574\u5408\u3002\u5982\u679c\u4f60\u540c\u6642\u904b\u884c\u9999\u6e2f\u4f3a\u670d\u5668\u79df\u7528\u548c\u96f2\u8cc7\u6e90\u7684\u6df7\u5408\u8a2d\u7f6e\uff0c\u9019\u4e00\u9ede\u5c24\u70ba\u91cd\u8981\u3002<\/p>\n
3.IP\u5730\u7406\u4f4d\u7f6e\u8003\u616e<\/h3>\n
EIP\u7684\u5730\u7406\u95dc\u806f\u53ef\u80fd\u5f71\u97ff\u5ef6\u9072\u548c\u7528\u6236\u9ad4\u9a57\u3002\u5c0d\u65bc\u9762\u5411\u9999\u6e2f\u7684\u670d\u52d9\uff0c\u512a\u5148\u8003\u616e\u5177\u6709\u672c\u5730\u5b58\u5728\u9ede\u7684EIP\u4ee5\u6700\u5c0f\u5316\u5ef6\u9072\u3002<\/p>\n
\u5f48\u6027\u516c\u7db2IP vs. \u50b3\u7d71\u56fa\u5b9aIP<\/strong><\/h2>\n
\u8981\u771f\u6b63\u6b23\u8cde\u5f48\u6027\u516c\u7db2IP\u5728\u9999\u6e2f\u4f3a\u670d\u5668\u79df\u7528\u5834\u666f\u4e2d\u7684\u5a01\u529b\uff0c\u8b93\u6211\u5011\u5c07\u5b83\u8207\u5176\u524d\u8eab\uff0c\u50b3\u7d71\u56fa\u5b9aIP\u9032\u884c\u5c0d\u6bd4\u3002<\/p>\n
\u6210\u672c\u6548\u76ca\uff1a<\/strong>\u96d6\u7136\u56fa\u5b9aIP\u4e4d\u770b\u4e4b\u4e0b\u53ef\u80fd\u66f4\u4fbf\u5b9c\uff0c\u4f46\u5728\u52d5\u614b\u74b0\u5883\u4e2d\uff0cEIP\u901a\u5e38\u66f4\u5177\u6210\u672c\u6548\u76ca\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u5feb\u901f\u5206\u6790\uff1a<\/p>\n
\r\n    \u6210\u672c\u6bd4\u8f03\uff08\u6708\u5ea6\uff09\uff1a\r\n    \u56fa\u5b9aIP\uff1a\r\n    - \u57fa\u672c\u6210\u672c\uff1a$X\r\n    - \u672a\u4f7f\u7528\u8cc7\u6e90\u6210\u672c\uff1a$Y\uff08\u672a\u9644\u52a0\u5230\u5be6\u4f8b\u6642\uff09\r\n    - \u7e3d\u8a08\uff1a$X + $Y\r\n\r\n    \u5f48\u6027IP\uff1a\r\n    - \u57fa\u672c\u6210\u672c\uff1a$A\uff08\u4f7f\u7528\u6642\u901a\u5e38\u70ba$0\uff09\r\n    - \u4f7f\u7528\u6210\u672c\uff1a$B\uff08\u57fa\u65bc\u5be6\u969b\u4f7f\u7528\u6216\u50b3\u8f38\uff09\r\n    - \u9748\u6d3b\u6027\u50f9\u503c\uff1a$C\uff08\u52d5\u614b\u5206\u914d\u5e36\u4f86\u7684\u6210\u672c\u7bc0\u7701\uff09\r\n    - \u7e3d\u8a08\uff1a$A + $B - $C\r\n\r\n    # \u5728\u8a31\u591a\u60c5\u6cc1\u4e0b\uff0c(A + B - C) < (X + Y)\r\n    <\/code><\/pre>\n
\u904b\u71df\u7ba1\u7406\uff1a<\/strong>EIP\u5728\u904b\u71df\u9748\u6d3b\u6027\u65b9\u9762\u8868\u73fe\u51fa\u8272\uff0c\u9019\u5728\u9999\u6e2f\u5feb\u7bc0\u594f\u7684\u4f3a\u670d\u5668\u79df\u7528\u74b0\u5883\u4e2d\u5c24\u70ba\u91cd\u8981\uff1a<\/p>\n