{"id":573,"date":"2018-06-30T11:38:46","date_gmt":"2018-06-30T03:38:46","guid":{"rendered":"http:\/\/www.sniper97.cn\/?p=573"},"modified":"2018-06-30T11:38:46","modified_gmt":"2018-06-30T03:38:46","slug":"%e7%ac%ac%e5%8d%81%e5%9b%9b%e7%ab%a0-%e4%ba%91%e4%ba%a4%e4%bb%98%e6%a8%a1%e5%9e%8b%e8%80%83%e9%87%8f","status":"publish","type":"post","link":"http:\/\/www.sniper97.cn\/index.php\/note\/cloud-computing-concepts%ef%bc%8ctechnology-and-architecture\/573\/","title":{"rendered":"\u7b2c\u5341\u56db\u7ae0 \u4e91\u4ea4\u4ed8\u6a21\u578b\u8003\u91cf"},"content":{"rendered":"

\u672c\u7ae0\u76ee\u6807\uff1a\u89e3\u51b3\u5728\u57fa\u4e8eIaaS\u3001PaaS\u3001SaaS\u7684\u73af\u5883\u4e2d\u5f88\u591a\u73b0\u5b9e\u4e16\u754c\u7684\u8003\u91cf\u3002<\/p>\n

IaaS\u73af\u5883<\/h2>\n

\u4ece\u4e91\u63d0\u4f9b\u8005\u89d2\u5ea6\u770b\uff1a\u6784\u5efaIaaS\u73af\u5883\uff1a<\/h3>\n

\u865a\u62df\u670d\u52a1\u5668\u548c\u4e91\u5b58\u50a8\u8bbe\u5907\u673a\u5236\u4ee3\u8868\u7740\u4e24\u4e2a\u6700\u57fa\u672c\u7684IT\u8d44\u6e90\uff0c\u5b83\u4eec\u662f\u4f5c\u4e3aIaaS\u73af\u5883\u4e2d\u6807\u51c6\u5feb\u901f\u4f9b\u7ed9\u67b6\u6784\u7684\u4e00\u90e8\u5206\u4ea4\u4ed8\u7684\u3002
\n\u8fd9\u4e9b\u8d44\u6e90\u63d0\u4f9b\u6709\u5404\u79cd\u6807\u51c6\u5316\u7684\u914d\u7f6e\uff0c\u7531\u4e0b\u8ff0\u7684\u5c5e\u6027\u5b9a\u4e49\uff1a
\n\uff081\uff09\u64cd\u4f5c\u7cfb\u7edf
\n\uff082\uff09\u4e3b\u5b58\u5bb9\u91cf
\n\uff083\uff09\u5904\u7406\u80fd\u529b
\n\uff084\uff09\u865a\u62df\u5316\u7684\u5b58\u50a8\u80fd\u529b
\n 
\n\u53ef\u4ee5\u5bf9\u865a\u62df\u670d\u52a1\u5668\u8fdb\u884c\u5feb\u7167\uff08snapshot\uff09\uff0c\u4ee5\u8bb0\u5f55\u5b83\u7684\u5f53\u524d\u72b6\u6001\u3001\u5185\u5b58\u548c\u5bf9\u865a\u62df\u5316IaaS\u73af\u5883\u7684\u914d\u7f6e\uff0c\u7528\u4e8e\u5907\u4efd\u548c\u590d\u5236\uff0c\u5e76\u652f\u6301\u6c34\u5e73\u548c\u5782\u76f4\u6269\u5c55\u7684\u9700\u6c42\u3002
\n <\/p>\n

1.\u6570\u636e\u4e2d\u5fc3<\/strong><\/h4>\n

\u4e91\u63d0\u4f9b\u8005\u53ef\u4ee5\u4ece\u5206\u5e03\u4e0d\u540c\u5730\u7406\u4f4d\u7f6e\u7684\u6570\u636e\u4e2d\u5fc3\u6765\u63d0\u4f9b\u57fa\u4e8eIaaS\u7684IT\u8d44\u6e90\uff0c\u8fd9\u6837\u505a\u4e3b\u8981\u6709\u4e0b\u9762\u8fd9\u4e9b\u597d\u5904\uff1a
\n\uff081\uff09\u591a\u6570\u636e\u4e2d\u5fc3\u53ef\u4ee5\u8fde\u63a5\u8d77\u6765\u589e\u52a0\u5f39\u6027\u3002\u6bcf\u4e2a\u6570\u636e\u4e2d\u5fc3\u653e\u5728\u4e0d\u540c\u7684\u5730\u7406\u4f4d\u7f6e\uff0c\u964d\u4f4e\u4e86\u5355\u4e00\u6545\u969c\u5bfc\u81f4\u6240\u6709\u7684\u6570\u636e\u4e2d\u5fc3\u540c\u65f6\u4e0b\u7ebf\u7684\u53ef\u80fd\u6027\u3002
\n(2)\u6570\u636e\u4e2d\u5fc3\u901a\u8fc7\u4f4e\u5ef6\u8fdf\u7684\u9ad8\u901f\u901a\u4fe1\u7f51\u7edc\u8fde\u63a5\u8d77\u6765\uff0c\u5728\u63d0\u9ad8\u53ef\u7528\u6027\u548c\u53ef\u9760\u6027\u7684\u540c\u65f6\uff0c\u8fd8\u53ef\u4ee5\u8fdb\u884c\u8d1f\u8f7d\u5747\u8861\u3001IT\u8d44\u6e90\u5907\u4efd\u548c\u590d\u5236\u4ee5\u53ca\u589e\u52a0\u5b58\u50a8\u5bb9\u91cf\u3002\u628a\u591a\u6570\u636e\u4e2d\u5fc3\u5206\u6563\u653e\u5230\u66f4\u5927\u7684\u533a\u57df\u4e0a\u4f1a\u8fdb\u4e00\u6b65\u964d\u4f4e\u5ef6\u8fdf\u3002
\n\uff083\uff09\u5bf9\u4e8e\u53d7\u5230\u6cd5\u5f8b\u548c\u6cd5\u89c4\u8981\u6c42\u9650\u5236\u7684\u4e91\u7528\u6237\u6765\u8bf4\uff0c\u90e8\u7f72\u5728\u4e0d\u540c\u56fd\u5bb6\u7684\u6570\u636e\u4e2d\u5fc3\u53ef\u4ee5\u4f7f\u4ed6\u4eec\u5bf9IT\u8d44\u6e90\u7684\u8bbf\u95ee\u66f4\u65b9\u4fbf\u3002
\n 
\n\u5f53\u7528IaaS\u73af\u5883\u5411\u4e91\u7528\u6237\u63d0\u4f9b\u865a\u62df\u5316\u7f51\u7edc\u73af\u5883\u65f6\uff0c\u6bcf\u4e2a\u4e91\u7528\u6237\u88ab\u9694\u79bb\u8fdb\u4e00\u4e2a\u79df\u6237\uff08tenant\uff09\u73af\u5883\uff0c\u8be5\u73af\u5883\u901a\u8fc7\u56e0\u7279\u7f51\u628aIT\u8d44\u6e90\u4e0e\u4e91\u7684\u5176\u4ed6\u90e8\u5206\u9694\u7edd\u5f00\u3002<\/p>\n

2.\u53ef\u6269\u5c55\u6027\u4e0e\u53ef\u9760\u6027<\/strong><\/h4>\n

\u5728IaaS\u73af\u5883\u4e2d\uff0c\u4e91\u63d0\u4f9b\u8005\u53ef\u4ee5\u901a\u8fc7\u52a8\u6001\u5782\u76f4\u6269\u5c55\u8fd9\u79cd\u7c7b\u578b\u7684\u52a8\u6001\u53ef\u6269\u5c55\u6027\u67b6\u6784\u6765\u81ea\u52a8\u63d0\u4f9b\u865a\u62df\u670d\u52a1\u5668\u3002<\/p>\n

3.\u76d1\u63a7<\/strong><\/h4>\n

IaaS\u73af\u5883\u4e2d\u7684\u4e91\u4f7f\u7528\u76d1\u63a7\u5668\u53ef\u4ee5\u7528VIM\u6765\u5b9e\u73b0\uff0c\u4e5f\u53ef\u4ee5\u91c7\u7528\u4e13\u95e8\u7684\u76d1\u63a7\u5de5\u5177\uff0c\u8fd9\u4e9b\u5de5\u5177\u76f4\u63a5\u5305\u542b\u865a\u62df\u5316\u5e73\u53f0\uff0c\u5e76\u4e0e\u4e4b\u6253\u4ea4\u9053\u3002IaaS\u5e73\u53f0\u6d89\u53ca\u76d1\u63a7\u7684\u51e0\u4e2a\u5e38\u89c1\u6027\u80fd\u5305\u62ec\uff1a
\n\uff081\uff09\u865a\u62df\u670d\u52a1\u5668\u751f\u547d\u5468\u671f\uff08virtual service lifecycle\uff09\u2014\u2014\u7528\u4e8e\u6309\u4f7f\u7528\u4ed8\u8d39\u76d1\u63a7\u5668\u548c\u57fa\u4e8e\u65f6\u95f4\u7684\u8ba1\u8d39\uff0c\u8bb0\u5f55\u548c\u8ffd\u8e2a\u6b63\u5e38\u8fd0\u884c\u65f6\u95f4\u548cIT\u8d44\u6e90\u7684\u5206\u914d\u3002
\n\uff082\uff09\u6570\u636e\u5b58\u50a8\uff08data storage\uff09\u2014\u2014\u8ffd\u8e2a\u548c\u786e\u5b9a\u865a\u62df\u670d\u52a1\u5668\u4e0a\u4e91\u5b58\u50a8\u8bbe\u5907\u5b58\u50a8\u5bb9\u91cf\u7684\u5206\u914d\uff0c\u7528\u4e8e\u6309\u4f7f\u7528\u4ed8\u8d39\u76d1\u63a7\u5668\uff0c\u8bb0\u5f55\u5b58\u50a8\u4f7f\u7528\u4fe1\u606f\u4ee5\u4fbf\u8ba1\u8d39\u3002
\n\uff083\uff09\u7f51\u7edc\u6d41\u91cf\uff08network traffic\uff09\u2014\u2014\u7528\u4e8e\u6309\u4f7f\u7528\u4ed8\u8d39\u76d1\u63a7\u5668<\/span>\uff0c\u5b83\u8bb0\u5f55\u8fdb\u5165\u548c\u6d41\u51fa\u7684\u7f51\u7edc\u4f7f\u7528\uff1b\u7528\u4e8eSLA\u76d1\u63a7\u5668\uff0c\u8bb0\u5f55\u5b58\u50a8\u4f7f\u7528\u4fe1\u606f\u4ee5\u4fbf\u8ba1\u8d39\u3002<\/span>
\n\uff084\uff09\u5931\u6548\u60c5\u51b5\uff08failure condition\uff09\u2014\u2014\u7528\u4e8eSLA\u76d1\u63a7\u5668\uff0c<\/span>\u5b83\u8bb0\u5f55IT\u8d44\u6e90\u548cQoS\u6307\u6807\uff0c\u5728\u53d1\u751f\u5931\u6548\u7684\u65f6\u5019\u63d0\u4f9b\u62a5\u8b66\u3002
\n\uff085\uff09\u4e8b\u4ef6\u89e6\u53d1\u5668\uff08event trigger\uff09\u2014\u2014\u7528\u4e8e\u5ba1\u8ba1\u76d1\u63a7\u5668\uff0c\u5b83\u8bc4\u4f30\u548c\u8861\u91cf\u9009\u5b9a\u7684IT\u8d44\u6e90\u5bf9\u6cd5\u89c4\u7684\u9075\u5b88\u60c5\u51b5\u3002<\/p>\n

4.\u5b89\u5168<\/strong><\/h4>\n

\u4e0e\u4f7fIaaS\u73af\u5883\u5b89\u5168\u76f8\u5173\u7684\u4e91\u5b89\u5168\u673a\u5236\u5305\u62ec\uff1a
\n\uff081\uff09\u52a0\u5bc6\u3001\u54c8\u5e0c\u3001\u6570\u5b57\u7b7e\u540d\u548cPKI\u673a\u5236\uff0c\u7528\u6765\u5168\u9762\u4fdd\u62a4\u6570\u636e\u4f20\u8f93\u3002
\n\uff082\uff09IAM\u548cSSO\u673a\u5236\uff0c\u7528\u6765\u8bbf\u95ee\u5b89\u5168\u7cfb\u7edf\u5185\u7684\u670d\u52a1\u548c\u63a5\u53e3\uff0c\u5b89\u5168\u7cfb\u7edf\u4f9d\u8d56\u4e8e\u7528\u6237\u8eab\u4efd\u8bc6\u522b\u3001\u8ba4\u8bc1\u548c\u6388\u6743\u80fd\u529b\u3002
\n\uff083\uff09\u57fa\u4e8e\u4e91\u7684\u5b89\u5168\u7ec4\uff0c\u7528\u4e8e\u9694\u79bb\u865a\u62df\u73af\u5883\uff0c\u662f\u7531\u7f51\u7edc\u7ba1\u7406\u8f6f\u4ef6\u901a\u8fc7\u865a\u62df\u673a\u76d1\u63a7\u5668\u548c\u7f51\u7edc\u5206\u5272\u6765\u5b9e\u73b0\u7684\u3002
\n\uff084\uff09\u5f3a\u5316\u7684\u865a\u62df\u670d\u52a1\u5668\u6620\u50cf\uff0c\u7528\u4e8e\u5185\u90e8\u548c\u5916\u90e8\u53ef\u7528\u7684\u865a\u62df\u670d\u52a1\u5668\u73af\u5883\u3002
\n\uff085\uff09\u5404\u79cd\u4e91\u4f7f\u7528\u76d1\u63a7\u5668\uff0c\u8ffd\u8e2a\u63d0\u4f9b\u7684\u865a\u62dfIT\u8d44\u6e90\uff0c\u4ee5\u53d1\u73b0\u5f02\u5e38\u4f7f\u7528\u6a21\u5f0f\u3002<\/p>\n

\u4ece\u4e91\u7528\u6237\u7684\u89d2\u5ea6\u770b\uff1a\u4f7f\u7528IaaS\u73af\u5883\uff1a<\/h3>\n

\"\"
\n\u4e91\u5b58\u50a8\u8bbe\u5907\u53ef\u4ee5\u76f4\u63a5\u9644\u52a0\u5230\u865a\u62df\u670d\u52a1\u5668\u4e0a\uff0c\u901a\u8fc7\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u7684\u865a\u62df\u670d\u52a1\u5668\u7ba1\u7406\u529f\u80fd\u63a5\u53e3\u8fdb\u884c\u8bbf\u95ee\u3002
\n 
\n\u5e38\u7528\u7684\u7ba1\u7406\u548c\u4f20\u8f93\u4e91\u5b58\u50a8\u6570\u636e\u7684\u683c\u5f0f\uff1a
\n\uff081\uff09\u7f51\u7edc\u8fde\u63a5\u7684\u6587\u4ef6\u7cfb\u7edf\uff08Networked File System\uff09
\n\uff082\uff09\u5b58\u50a8\u533a\u57df\u7f51\u8bbe\u5907\uff08Storage Area Network Device\uff09
\n\uff083\uff09\u57fa\u4e8eWeb\u7684\u8d44\u6e90\uff08Web-based Resource\uff09
\nIT\u8d44\u6e90\u63d0\u4f9b\u8003\u91cf
\n\u4f5c\u4e3aIaaS\u73af\u5883\u7684\u4e00\u90e8\u5206\uff0c\u4e91\u7528\u6237\u5bf9\u5982\u4f55\u63d0\u4f9bIT\u8d44\u6e90\u4ee5\u53ca\u63d0\u4f9b\u5230\u4ec0\u4e48\u7a0b\u5ea6\u6709\u9ad8\u5ea6\u7684\u63a7\u5236\u6743\u3002<\/p>\n

PaaS\u73af\u5883<\/h2>\n

\u4ece\u4e91\u63d0\u4f9b\u8005\u89d2\u5ea6\u770b\uff1a<\/h3>\n

PaaS\u73af\u5883\u4e00\u822c\u9700\u8981\u914d\u7f6e\u4e00\u7ec4\u9009\u62e9\u51fa\u6765\u7684\u5e94\u7528\u5f00\u53d1\u548c\u90e8\u7f72\u5e73\u53f0\uff0c\u4ee5\u5bb9\u7eb3\u4e0d\u540c\u7684\u7f16\u7a0b\u6a21\u578b\u3001\u8bed\u8a00\u548c\u6846\u67b6\u3002
\n\u6bcf\u4e2a\u5e73\u53f0\u5e26\u6709\u4e0e\u4e4b\u5339\u914d\u7684SDK\u548cIDE\uff0c\u8fd9\u4e9bSDK\u548cIDE\u53ef\u4ee5\u662f\u5b9a\u5236\u6784\u67b6\u7684\uff0c\u6216\u662f\u652f\u6301\u7531\u4e91\u63d0\u4f9b\u8005\u7684IDE\u63d2\u4ef6\u7684\u3002
\n\u4e91\u63d0\u4f9b\u8005\u5e38\u5e38\u63d0\u4f9b\u4e3aPaaS\u5e73\u53f0\u5b9a\u5236\u7684\u8d44\u6e90\u7ba1\u7406\u7cfb\u7edf\u673a\u5236\uff0c\u8fd9\u6837\u4e91\u7528\u6237\u53ef\u4ee5\u521b\u5efa\u548c\u63a7\u5236\u5e26\u6709\u5df2\u5c31\u7eea\u73af\u5883\u7684\u81ea\u5b9a\u4e49\u865a\u62df\u670d\u52a1\u5668\u6620\u50cf\u3002<\/p>\n

1.\u53ef\u6269\u5c55\u6027\u4e0e\u53ef\u9760\u6027<\/strong><\/h4>\n

2.\u76d1\u63a7<\/strong><\/h4>\n

PaaS\u73af\u5883\u4e2d\u4e13\u95e8\u7684\u4e91\u4f7f\u7528\u76d1\u63a7\u5668\u7528\u6765\u76d1\u63a7\uff1a
\n\uff081\uff09\u5df2\u5c31\u7eea\u73af\u5883\u5b9e\u4f8b\uff08ready-made environment instance\uff09\u2014\u2014\u5bf9\u8fd9\u4e9b\u5b9e\u4f8b\u7684\u4f7f\u7528\u90fd\u4f1a\u88ab\u6309\u4f7f\u7528\u4ed8\u8d39\u76d1\u63a7\u5668\u8bb0\u5f55\u4e0b\u6765\uff0c\u7528\u6765\u8ba1\u7b97\u57fa\u4e8e\u65f6\u95f4\u7684\u4f7f\u7528\u8d39\u3002
\n\uff082\uff09\u6570\u636e\u6301\u4e45\u5316\uff08data persistent\uff09\u2014\u2014\u8fd9\u4e2a\u7edf\u8ba1\u503c\u7531\u6309\u4f7f\u7528\u4ed8\u8d39\u76d1\u63a7\u5668\u63d0\u4f9b\uff0c\u8bb0\u5f55\u6bcf\u4e2a\u8ba1\u8d39\u5468\u671f\u5185\u5b58\u50a8\u7684\u5bf9\u8c61\u6570\u91cf\u3001\u6bcf\u4e2a\u5bf9\u8c61\u5360\u7528\u7684\u5b58\u50a8\u7a7a\u95f4\u5927\u5c0f\u548c\u6570\u636e\u5e93\u4e8b\u52a1\u6570\u91cf\u3002
\n\uff083\uff09\u7f51\u7edc\u4f7f\u7528\uff08network usage\uff09\u2014\u2014\u8bb0\u5f55\u8fdb\u5165\u548c\u6d41\u51fa\u7684\u7f51\u7edc\u4f7f\u7528\uff0c\u63d0\u4f9b\u7ed9\u6309\u4f7f\u7528\u4ed8\u8d39\u76d1\u63a7\u5668\uff0c\u4ee5\u53ca\u8ffd\u8e2a\u4e0e\u7f51\u7edc\u76f8\u5173\u7684QoS\u6307\u6807\u7684SLA\u76d1\u63a7\u5668\u3002
\n\uff084\uff09\u5931\u6548\u60c5\u51b5\uff08failure condition\uff09\u2014\u2014\u8ffd\u8e2aIT\u8d44\u6e90QoS\u6307\u6807\u7684SLA\u76d1\u63a7\u5668\u9700\u8981\u6355\u83b7\u5931\u6548\u6570\u636e\u3002<\/span>
\n\uff085\uff09\u4e8b\u4ef6\u89e6\u53d1\u5668\uff08event trigger\uff09\u2014\u2014\u8fd9\u4e2a\u6307\u6807\u4e3b\u8981\u7531\u5ba1\u8ba1\u76d1\u63a7\u5668\u4f7f\u7528\uff0c\u5b83\u9700\u8981\u5bf9\u67d0\u4e9b\u7c7b\u578b\u7684\u4e8b\u4ef6\u8fdb\u884c\u54cd\u5e94\u3002<\/span><\/p>\n

3.\u5b89\u5168<\/strong><\/h4>\n

\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u9664\u4e86\u90a3\u4e9b\u5df2\u7ecf\u63d0\u4f9b\u7ed9IaaS\u73af\u5883\u7684\u5b89\u5168\u673a\u5236\uff0cPaaS\u73af\u5883\u901a\u5e38\u4e0d\u9700\u8981\u5f15\u5165\u65b0\u7684\u4e91\u5b89\u5168\u673a\u5236\u3002<\/p>\n

\u4ece\u4e91\u7528\u6237\u7684\u89d2\u5ea6\u770b:\u4f7f\u7528PaaS\u73af\u5883\uff1a<\/h3>\n

\u4e00\u4e2a\u5178\u578b\u7684PaaS IDE \u53ef\u4ee5\u63d0\u4f9b\u8303\u56f4\u5e7f\u6cdb\u7684\u5de5\u5177\u548c\u7f16\u7a0b\u8d44\u6e90\uff0c\u4f8b\u5982\u8f6f\u4ef6\u5e93\u3001\u7c7b\u5e93\u3001\u6846\u67b6\u3001API\u548c\u5404\u79cd\u8fd0\u884c\u65f6\u80fd\u529b\uff0c\u80fd\u591f\u6a21\u62df\u9884\u671f\u7684\u57fa\u4e8e\u4e91\u7684\u90e8\u7f72\u73af\u5883\u3002
\nPaaS\u8fd8\u5141\u8bb8\u5e94\u7528\u628a\u4e91\u5b58\u50a8\u8bbe\u5907\u4f5c\u4e3a\u72ec\u7acb\u7684\u6570\u636e\u5b58\u50a8\u65b0\u7cfb\u7edf\u6765\u4f7f\u7528\uff0c\u7528\u6765\u5b58\u653e\u4e0e\u5f00\u53d1\u6709\u5173\u7684\u6570\u636e\u3002
\nIT\u8d44\u6e90\u63d0\u4f9b\u8003\u91cf
\nPaaS\u73af\u5883\u63d0\u4f9b\u7684\u7ba1\u7406\u63a7\u5236\u6743\u5c11\u4e8eIaaS\u73af\u5883\uff0c\u4f46\u4ecd\u7136\u63d0\u4f9b\u4e86\u8303\u56f4\u76f8\u5f53\u5e7f\u7684\u7ba1\u7406\u7279\u6027\u3002
\n <\/p>\n

SaaS\u73af\u5883<\/h2>\n

\u4ece\u4e91\u63d0\u4f9b\u8005\u89d2\u5ea6\u770b\uff1a\u4f18\u5316SaaS\u73af\u5883:<\/h3>\n

\u5728SaaS\u5b9e\u73b0\u4e2d\uff0c\u4e91\u670d\u52a1\u67b6\u6784\u901a\u5e38\u662f\u57fa\u4e8e\u591a\u79df\u6237\u73af\u5883\u7684\uff0c\u5b83\u4f7f\u5f97\u5e76\u53d1\u7684\u4e91\u7528\u6237\u8bbf\u95ee\u6210\u4e3a\u53ef\u80fd\uff0c\u5e76\u4e14\u8c03\u8282\u8fd9\u4e9b\u8bbf\u95ee\u3002
\n\u5728SaaS\u73af\u5883\u4e2d\u7684IT\u8d44\u6e90\u5206\u5272\u901a\u5e38\u4e0d\u53d1\u751f\u5176\u57fa\u7840\u8bbe\u65bd\u5c42\u6b21\u4e0a\u3002
\n\"\"
\nSaaS\u7684\u5b9e\u73b0\u4e25\u91cd\u4f9d\u8d56\u4e8e\u672c\u5730\u52a8\u6001\u53ef\u6269\u5c55\u548c\u5de5\u4f5c\u8d1f\u8f7d\u5206\u5e03\u67b6\u6784\u63d0\u4f9b\u7684\u7279\u6027\uff0c\u5e76\u4f9d\u8d56\u4e0d\u4e2d\u65ad\u670d\u52a1\u91cd\u7f6e\u6765\u4fdd\u8bc1\u6545\u969c\u8f6c\u79fb\u60c5\u51b5\u4e0d\u5f71\u54cd\u57fa\u4e8eSaaS\u7684\u4e91\u670d\u52a1\u7684\u53ef\u7528\u6027\u3002
\n 
\nSaaS\u670d\u52a1\u7684\u5b9e\u73b0\u662f\u4e00\u79cd\u6216\u591a\u79cd\u5b9e\u73b0\u5a92\u4ecb\u63d0\u4f9b\u7684\uff1a
\n\uff081\uff09\u79fb\u52a8\u5e94\u7528
\n\uff082\uff09REST\u670d\u52a1
\n\uff083\uff09Web\u670d\u52a1
\n\u8be5\u73af\u5883\u53ef\u52a0\u5165\u7684\u67b6\u6784\u6a21\u578b\uff1a
\n\uff081\uff09\u670d\u52a1\u8d1f\u8f7d\u5747\u8861\uff08service load balancing\uff09
\n\uff082\uff09\u52a8\u6001\u5931\u6548\u68c0\u6d4b\u548c\u6062\u590d\uff08dynamic failure detection and recovery\uff09
\n\uff083\uff09\u5b58\u50a8\u7ef4\u62a4\u7a97\u53e3\uff08storage maintenance window \uff09
\n\uff084\uff09\u5f39\u6027\u8d44\u6e90\u5bb9\u91cf\/\u5f39\u6027\u7f51\u7edc\u5bb9\u91cf\uff08elastic resource capacity\/elastic network capacity\uff09
\n\uff085\uff09\u4e91\u8d1f\u8f7d\u5747\u8861\uff08cloud balancing\uff09
\n 
\nSaaS\u73af\u5883\u4e2d\u53ef\u4ee5\u4f7f\u7528\u7279\u6b8a\u7684\u4e91\u4f7f\u7528\u76d1\u63a7\u5668\u6765\u8ffd\u8e2a\u7684\u4e00\u4e9b\u6307\u6807\uff1a
\n\uff081\uff09\u79df\u6237\u8ba2\u9605\u5468\u671f\uff08tenant subscription period\uff09\u2014\u2014\u6309\u4f7f\u7528\u4ed8\u8d39\u76d1\u63a7\u5668\u7528\u8fd9\u4e2a\u6307\u6807\u6765\u8bb0\u5f55\u548c\u8ffd\u8e2a\u5e94\u7528\u7684\u4f7f\u7528\uff0c\u63d0\u4f9b\u7ed9\u57fa\u4e8e\u65f6\u95f4\u7684\u8ba1\u8d39\u4f7f\u7528\u3002
\n\uff082\uff09\u5e94\u7528\u4f7f\u7528\uff08application usage\uff09\u2014\u2014\u8fd9\u4e2a\u6307\u6807\u662f\u57fa\u4e8e\u7528\u6237\u6216\u5b89\u5168\u7ec4\u7684\uff0c\u5b83\u548c\u6309\u4f7f\u7528\u4ed8\u8d39\u76d1\u63a7\u5668\u4e00\u8d77\u4f7f\u7528\u6765\u8bb0\u5f55\u548c\u8ffd\u8e2a\u5e94\u7528\u7684\u4f7f\u7528\uff0c\u7528\u4e8e\u8ba1\u8d39\u7684\u76ee\u7684\u3002
\n\uff083\uff09\u79df\u6237\u5e94\u7528\u529f\u80fd\u6a21\u5757\uff08tenant application functional module\uff09\u2014\u2014\u6839\u636e\u4e91\u7528\u6237\u662f\u514d\u8d39\u7684\u8fd8\u662f\u4ed8\u8d39\u7684\u8ba2\u9605\u8005\uff0c\u4e91\u670d\u52a1\u53ef\u4ee5\u6709\u4e0d\u540c\u7684\u529f\u80fd\u7b49\u7ea7\u3002<\/p>\n

\u4ece\u4e91\u7528\u6237\u7684\u89d2\u5ea6\u770b:<\/h3>\n

\u56e0\u4e3a\u57fa\u4e8eSaaS\u7684\u4e91\u670d\u52a1\u51e0\u4e4e\u603b\u662f\u6709\u7cbe\u70bc\u7684\u3001\u901a\u7528\u7684API\uff0c\u6240\u4ee5\u8fd9\u4e9b\u670d\u52a1\u901a\u5e38\u901a\u8fc7\u88ab\u8bbe\u8ba1\u4e3a\u66f4\u5927\u7684\u5206\u5e03\u5f0f\u89e3\u51b3\u65b9\u6848\u7684\u4e00\u90e8\u5206\u3002
\n 
\n\u5178\u578b\u4f8b\u9898\uff1a
\n\u4e00\u3001\u9009\u62e9<\/span><\/b><\/b><\/p>\n

1.\u00a0<\/span>The \u00a0<\/span> \u00a0 B \u00a0\u00a0<\/span><\/u> and cloud storage device mechanisms represent the two most fundamental IT resources that are delivered as part of a standard rapid provisioning architecture within IaaS environments.<\/span><\/p>\n

\u00a0\u00a0A. CPU \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/strong><\/span>B<\/span><\/i><\/strong>.virtual server<\/strong> \u00a0\u00a0C. Cloud Provider \u00a0\u00a0D. \u00a0Models<\/span><\/h3>\n

2. <\/span>\u00a0\u00a0 D \u00a0 \u00a0 \u00a0\u00a0<\/span><\/u> ,primary memory capacity,processing capacity and virtualized storage capacity can be used to define a virtual server within \u00a0IaaS environments.<\/span><\/h3>\n

\u00a0\u00a0A. CPU \u00a0\u00a0\u00a0\u00a0\u00a0B.offline \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0C.RAID \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>D<\/span><\/i><\/strong>. operating system<\/strong> \u00a0\u00a0\u00a0\u00a0\u00a0<\/span><\/h3>\n

3.Memory and virtualized storage is usually allocated with increments of<\/span> \u00a0 D \u00a0\u00a0<\/span><\/u> to simplify the provisioning of underlying physical IT resources.<\/span>
\n\u00a0\u00a0A. 512 Byte \u00a0\u00a0B. 1KB \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0C.1MB \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D.1GB<\/strong> <\/span><\/p>\n

4.<\/span>Snapshots can be taken of a virtual server to record its current state, memory, and configuration of a virtualized IaaS environment for backup and replication purposes, in support of horizontal and <\/span>\u00a0 C \u00a0 \u00a0 <\/span><\/u>\u00a0 scaling requirements.<\/span><\/p>\n

\u00a0\u00a0A. Provisioning \u00a0\u00a0B.virtualized \u00a0\u00a0<\/span>C<\/span><\/i><\/strong>.vertical<\/strong> \u00a0\u00a0\u00a0\u00a0D.latency<\/span>
\n5. Each data center is placed in a different location to lower the \u00a0chances of a single failure forcing all of the data centers to go \u00a0offline simultaneously.(A)<\/span>
\n\u00a0\u00a0<\/span>A<\/span><\/i><\/strong>. all<\/strong> \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B. a part \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0C. the biggest \u00a0\u00a0d.this center<\/span>
\n6.Multiple data centers can be linked together for increased <\/span>\u00a0 \u00a0 C \u00a0 <\/span><\/u>.<\/span>
\n\u00a0\u00a0A.latency \u00a0\u00a0\u00a0B.tracks \u00a0\u00a0\u00a0\u00a0<\/strong><\/span>C<\/span><\/i><\/strong>.resiliency<\/strong> \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D.centers<\/span>
\n7.Connected through high-speed \u00a0communications networks with <\/span>\u00a0\u00a0 A \u00a0\u00a0 <\/span><\/u>, data centers can perform load balancing, IT resource backup and \u00a0replication, increase storage capacity,improving availability and reliability.<\/span>
\n\u00a0<\/span>A<\/span><\/i>.low latency <\/span><\/strong>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B.SaaS \u00a0\u00a0\u00a0\u00a0\u00a0C.PaaS \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D.the United Kingdom<\/span>
\n8.Automatic scalability requires the automated scaling listener to monitor the \u00a0workload and reactively scale the resource capacity. This mechanism typically acts as a \u00a0<\/span> \u00a0 C \u00a0 \u00a0 <\/span><\/u>\u00a0 . \u00a0<\/span>
\n\u00a0A. QoS \u00a0\u00a0\u00a0\u00a0\u00a0B.SLA \u00a0\u00a0\u00a0<\/strong><\/span>C<\/span><\/i><\/strong>.monitoring agent<\/strong> \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D. cloud \u00a0\u00a0\u00a0\u00a0<\/span>
\n9.Working with IaaS Environments,Virtual servers are accessed at the operating system level through the use of remote <\/span>\u00a0\u00a0 D \u00a0<\/span><\/u> applications.<\/span><\/p>\n

\u00a0\u00a0A.<\/span>PaaS \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B. <\/span>storage device \u00a0\u00a0C.pay-per-use \u00a0\u00a0\u00a0<\/span>D<\/span><\/i>.terminal<\/span><\/strong>\u00a0<\/span><\/h4>\n

10.PaaS environments provide \u00a0<\/span> \u00a0 A \u00a0 \u00a0<\/span><\/u> administrative control than IaaS environments<\/span>
\n\u00a0\u00a0<\/strong><\/span>A<\/span><\/i><\/strong>.less<\/strong> \u00a0\u00a0\u00a0\u00a0\u00a0B.high \u00a0\u00a0\u00a0\u00a0C.Same \u00a0\u00a0\u00a0\u00a0\u00a0D. more<\/span>
\n 
\n\u4e8c\u3001\u5224\u65ad<\/span><\/b><\/b><\/p>\n

1.<\/span>Cloud providers can offer \u00a0IaaS-based IT resources from multiple geographically diverse data centers.(T)<\/span><\/p>\n

2.<\/span>Working with IaaS Environments,a cloud storage device can be attached to an IT resource that is being hosted outside of the cloud, such as an on-premise device over a WAN or VPN.(T)<\/span><\/p>\n

3.<\/span>Cloud consumers have a low degree of control over how and to what extent IT resources are provisioned as part of their IaaS environments.(F)<\/span><\/p>\n

4.<\/span>Because SaaS-based cloud services are almost always accompanied by refined and generic APIs, they are usually designed to be incorporated as part of larger distributed solutions.(T)<\/span><\/p>\n

5.<\/span>The design of IaaS environments highly specialized.(F)<\/span><\/p>\n

(The design of IaaS environments lowly specialized.)<\/strong><\/p>\n

6.<\/span>The design of SaaS environments highly specialized.(T)<\/span><\/p>\n

7.<\/span>Data centers that are deployed in different countries make \u00a0access to IT resources more \u00a0convenient for cloud \u00a0consumers that are not constricted \u00a0\u00a0by legal and regulatory requirements.( F)<\/span><\/p>\n

(Data centers that are deployed in different countries make \u00a0access to IT resources more \u00a0convenient for cloud \u00a0consumers that constricted \u00a0\u00a0by legal and regulatory requirements.)<\/strong><\/p>\n

8.<\/span>vertical \u00a0scaling \u00a0can be performed \u00a0through the VIM, as long as \u00a0the host physical servers \u00a0have sufficient capacity.(T)<\/span><\/p>\n

9.<\/span>Manual scalability does not require the cloud \u00a0consumer to interact with a usage \u00a0and \u00a0administration program.(F)<\/span><\/p>\n

(Manual scalability require the cloud \u00a0consumer to interact with a usage \u00a0and \u00a0administration program)<\/strong><\/p>\n

10.<\/span>SaaS IT resource segregation typically occur at the infrastructure level.(F)<\/span>
\n(SaaS IT resource segregation typically not occur at the infrastructure level)<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

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