{"id":39136,"date":"2024-11-26T17:00:17","date_gmt":"2024-11-26T09:00:17","guid":{"rendered":"https:\/\/fwq.ai\/blog\/39136\/"},"modified":"2024-11-26T17:00:17","modified_gmt":"2024-11-26T09:00:17","slug":"linux%e4%b9%8b%e8%99%9a%e6%8b%9f%e6%9c%8d%e5%8a%a1%e5%99%a8lvs%e6%90%ad%e5%bb%ba","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/39136\/","title":{"rendered":"Linux\u4e4b\u865a\u62df\u670d\u52a1\u5668LVS\u642d\u5efa"},"content":{"rendered":"<p><strong>\u4e00\u3001\u76f8\u5173\u672f\u8bed<\/strong>   <\/p>\n<pre>1. DS\uff1aDirector Server\u3002\u6307\u7684\u662f\u524d\u7aef\u8d1f\u8f7d\u5747\u8861\u5668\u8282\u70b9\u3002\n2. RS\uff1aReal Server\u3002\u540e\u7aef\u771f\u5b9e\u7684\u5de5\u4f5c\u670d\u52a1\u5668\u3002\n3. VIP\uff1a\u5411\u5916\u90e8\u76f4\u63a5\u9762\u5411\u7528\u6237\u8bf7\u6c42\uff0c\u4f5c\u4e3a\u7528\u6237\u8bf7\u6c42\u7684\u76ee\u6807\u7684IP\u5730\u5740\u3002\n4. DIP\uff1aDirector Server IP\uff0c\u4e3b\u8981\u7528\u4e8e\u548c\u5185\u90e8\u4e3b\u673a\u901a\u8baf\u7684IP\u5730\u5740\u3002\n5. RIP\uff1aReal Server IP\uff0c\u540e\u7aef\u670d\u52a1\u5668\u7684IP\u5730\u5740\u3002\n6. CIP\uff1aClient IP\uff0c\u8bbf\u95ee\u5ba2\u6237\u7aef\u7684IP\u5730\u5740\u3002\n<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236<br \/>\n<strong>\u4e8c\u3001\u4e09\u79cd\u6a21\u5f0f<\/strong>  <\/p>\n<p>1. \u76f4\u63a5\u8def\u7531\u6a21\u5f0f\uff08dr\uff09<\/p>\n<p>\u539f\u7406\uff1a\u8d1f\u8f7d\u5747\u8861\u5668\u548cRS\u90fd\u4f7f\u7528\u540c\u4e00\u4e2aIP\u5bf9\u5916\u670d\u52a1\uff61\u4f46\u53ea\u6709DR\u5bf9ARP\u8bf7\u6c42\u8fdb\u884c\u54cd\u5e94\uff0c\u6240\u6709RS\u5bf9\u672c\u8eab\u8fd9\u4e2aIP\u7684ARP\u8bf7\u6c42\u4fdd\u6301\u9759\u9ed8\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u7f51\u5173\u4f1a\u628a\u5bf9\u8fd9\u4e2a\u670d\u52a1IP\u7684\u8bf7\u6c42\u5168\u90e8\u5b9a\u5411\u7ed9DR\uff0c\u800cDR\u6536\u5230\u6570\u636e\u5305\u540e\u6839\u636e\u8c03\u5ea6\u7b97\u6cd5\uff0c\u627e\u51fa\u5bf9\u5e94\u7684RS\uff0c\u628a\u76ee\u7684MAC\u5730\u5740\u6539\u4e3aRS\u7684MAC\uff08\u56e0\u4e3aIP\u4e00\u81f4\uff09\u5e76\u5c06\u8bf7\u6c42\u5206\u53d1\u7ed9\u8fd9\u53f0RS\u3002\u8fd9\u65f6RS\u6536\u5230\u8fd9\u4e2a\u6570\u636e\u5305,\u5904\u7406\u5b8c\u6210\u4e4b\u540e\uff0c\u7531\u4e8eIP\u4e00\u81f4\uff0c\u53ef\u4ee5\u76f4\u63a5\u5c06\u6570\u636e\u8fd4\u7ed9\u5ba2\u6237\uff0c\u5219\u7b49\u4e8e\u76f4\u63a5\u4ece\u5ba2\u6237\u7aef\u6536\u5230\u8fd9\u4e2a\u6570\u636e\u5305\u65e0\u5f02\uff0c\u5904\u7406\u540e\u76f4\u63a5\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u3002\u7531\u4e8e\u8d1f\u8f7d\u5747\u8861\u5668\u8981\u5bf9\u4e8c\u5c42\u5305\u5934\u8fdb\u884c\u6539\u6362,\u6240\u4ee5\u8d1f\u8f7d\u5747\u8861\u5668\u548cRS\u4e4b\u95f4\u5fc5\u987b\u5728\u4e00\u4e2a\u5e7f\u64ad\u57df\uff0c\u4e5f\u53ef\u4ee5\u7b80\u5355\u7684\u7406\u89e3\u4e3a\u5728\u540c\u4e00\u53f0\u4ea4\u6362\u673a\u4e0a\u3002<\/p>\n<p>\u4f18\u70b9\uff1a\u8d1f\u8f7d\u5747\u8861\u5668\u53ea\u662f\u5206\u53d1\u8bf7\u6c42\uff0c\u5e94\u7b54\u5305\u901a\u8fc7\u5355\u72ec\u7684\u8def\u7531\u65b9\u6cd5\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u3002<\/p>\n<p>\u7f3a\u70b9\uff1a\u8981\u6c42\u8d1f\u8f7d\u5747\u8861\u5668\u7684\u7f51\u5361\u5fc5\u987b\u4e0e\u7269\u7406\u7f51\u5361\u5728\u4e00\u4e2a\u7269\u7406\u6bb5\u4e0a\u3002<\/p>\n<p>2. NAT\u6a21\u5f0f\uff08NAT\uff09<\/p>\n<p>\u539f\u7406\uff1a\u5c31\u662f\u628a\u5ba2\u6237\u7aef\u53d1\u6765\u7684\u6570\u636e\u5305\u7684IP\u5934\u7684\u76ee\u7684\u5730\u5740\uff0c\u5728\u8d1f\u8f7d\u5747\u8861\u5668\u4e0a\u6362\u6210\u5176\u4e2d\u4e00\u53f0RS\u7684IP\u5730\u5740\uff0c\u5e76\u53d1\u81f3\u6b64RS\u6765\u5904\u7406\uff0cRS\u5904\u7406\u5b8c\u6210\u540e\u628a\u6570\u636e\u4ea4\u7ed9\u7ecf\u8fc7\u8d1f\u8f7d\u5747\u8861\u5668\uff0c\u8d1f\u8f7d\u5747\u8861\u5668\u518d\u628a\u6570\u636e\u5305\u7684\u539fIP\u5730\u5740\u6539\u4e3a\u81ea\u5df1\u7684IP\uff0c\u5c06\u76ee\u7684\u5730\u5740\u6539\u4e3a\u5ba2\u6237\u7aefIP\u5730\u5740\u5373\u53ef\u3002\u671f\u95f4\uff0c\u65e0\u8bba\u662f\u8fdb\u6765\u7684\u6d41\u91cf,\u8fd8\u662f\u51fa\u53bb\u7684\u6d41\u91cf\uff0c\u90fd\u5fc5\u987b\u7ecf\u8fc7\u8d1f\u8f7d\u5747\u8861\u5668\u3002<\/p>\n<p>\u4f18\u70b9\uff1a\u96c6\u7fa4\u4e2d\u7684\u7269\u7406\u670d\u52a1\u5668\u53ef\u4ee5\u4f7f\u7528\u4efb\u4f55\u652f\u6301TCP\/IP\u64cd\u4f5c\u7cfb\u7edf\u3002<\/p>\n<p>\u7f3a\u70b9\uff1a\u6269\u5c55\u6027\u5dee\u3002\u5f53\u670d\u52a1\u5668\u8282\u70b9\uff08\u666e\u901aPC\u670d\u52a1\u5668\uff09\u589e\u957f\u8fc7\u591a\u65f6\uff0c\u8d1f\u8f7d\u5747\u8861\u5668\u5c06\u6210\u4e3a\u6574\u4e2a\u7cfb\u7edf\u7684\u74f6\u9888\uff0c\u56e0\u4e3a\u6240\u6709\u7684\u8bf7\u6c42\u5305\u548c\u5e94\u7b54\u5305\u7684\u6d41\u5411\u90fd\u7ecf\u8fc7\u8d1f\u8f7d\u5747\u8861\u5668\u3002\u5f53\u670d\u52a1\u5668\u8282\u70b9\u8fc7\u591a\u65f6\uff0c\u5927\u91cf\u7684\u6570\u636e\u5305\u90fd\u4ea4\u6c47\u5728\u8d1f\u8f7d\u5747\u8861\u5668\u5904\uff0c\u5bfc\u81f4\u8d1f\u8f7d\u5747\u8861\u5668\u53d8\u6162\u4ee5\u81f3\u4e8e\u6574\u4e2a\u94fe\u8def\u53d8\u6162\u3002<\/p>\n<p>3. IP\u96a7\u9053\u6a21\u5f0f\uff08TUN\uff09<\/p>\n<p>\u539f\u7406\uff1a\u96a7\u9053\u6a21\u5f0f\u5c31\u662f\uff0c\u628a\u5ba2\u6237\u7aef\u53d1\u6765\u7684\u6570\u636e\u5305\uff0c\u5c01\u88c5\u4e00\u4e2a\u65b0\u7684IP\u5934\u6807\u8bb0(\u4ec5\u76ee\u7684IP)\u53d1\u7ed9RS\uff0cRS\u6536\u5230\u540e\uff0c\u5148\u628a\u6570\u636e\u5305\u7684\u5934\u89e3\u5f00\uff0c\u8fd8\u539f\u6570\u636e\u5305\uff0c\u5904\u7406\u540e\u76f4\u63a5\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\uff0c\u4e0d\u9700\u8981\u518d\u7ecf\u8fc7\u8d1f\u8f7d\u5747\u8861\u5668\u3002\u6ce8\u610f\uff0c\u7531\u4e8eRS\u9700\u8981\u5bf9\u8d1f\u8f7d\u5747\u8861\u5668\u53d1\u8fc7\u6765\u7684\u6570\u636e\u5305\u8fdb\u884c\u8fd8\u539f\uff0c\u6240\u4ee5\u8bf4\u5fc5\u987b\u652f\u6301IPTUNNEL\u534f\u8bae\u3002\u56e0\u6b64\uff0c\u5728RS\u7684\u5185\u6838\u4e2d\uff0c\u5fc5\u987b\u7f16\u8bd1\u652f\u6301IPTUNNEL\u8fd9\u4e2a\u9009\u9879\u3002<\/p>\n<p>\u4f18\u70b9\uff1a\u8d1f\u8f7d\u5747\u8861\u5668\u53ea\u8d1f\u8d23\u5c06\u8bf7\u6c42\u5305\u5206\u53d1\u7ed9\u540e\u7aef\u8282\u70b9\u670d\u52a1\u5668\uff0c\u800cRS\u5c06\u5e94\u7b54\u5305\u76f4\u63a5\u53d1\u7ed9\u7528\u6237\uff0c\u51cf\u5c11\u4e86\u8d1f\u8f7d\u5747\u8861\u5668\u7684\u5927\u91cf\u6570\u636e\u6d41\u52a8\uff0c\u8d1f\u8f7d\u5747\u8861\u5668\u4e0d\u518d\u662f\u7cfb\u7edf\u7684\u74f6\u9888\uff0c\u5c31\u80fd\u5904\u7406\u5f88\u5de8\u5927\u7684\u8bf7\u6c42\u91cf\uff0c\u8fd9\u79cd\u65b9\u5f0f\uff0c\u4e00\u53f0\u8d1f\u8f7d\u5747\u8861\u5668\u80fd\u591f\u4e3a\u5f88\u591aRS\u8fdb\u884c\u5206\u53d1\u3002\u800c\u4e14\u8dd1\u5728\u516c\u7f51\u4e0a\u5c31\u80fd\u8fdb\u884c\u4e0d\u540c\u5730\u57df\u7684\u5206\u53d1\u3002<\/p>\n<p>\u7f3a\u70b9\uff1a\u96a7\u9053\u6a21\u5f0f\u7684RS\u8282\u70b9\u9700\u8981\u5408\u6cd5IP\uff0c\u8fd9\u79cd\u65b9\u5f0f\u9700\u8981\u6240\u6709\u7684\u670d\u52a1\u5668\u652f\u6301\u201cIP Tunneling\u201d(IP Encapsulation)\u534f\u8bae\uff0c\u670d\u52a1\u5668\u53ef\u80fd\u53ea\u5c40\u9650\u5728\u90e8\u5206Linux\u7cfb\u7edf\u4e0a\u3002<\/p>\n<p><strong>\u4e09\u3001\u76f8\u5173\u8c03\u5ea6\u7b97\u6cd5<\/strong>  <\/p>\n<p>1. LVS\u8d1f\u8f7d\u5747\u8861\u7684\u8c03\u5ea6\u7b97\u6cd5\u4e00\uff08\u9759\u6001\uff09<\/p>\n<p>\u8f6e\u5faa\u8c03\u5ea6\uff08rr, Round Robin\uff09<br \/> \u8c03\u5ea6\u5668\u901a\u8fc7\u201c\u8f6e\u5faa\u201d\u8c03\u5ea6\u7b97\u6cd5\u5c06\u5916\u90e8\u8bf7\u6c42\u6309\u987a\u5e8f\u8f6e\u6d41\u5206\u914d\u5230\u96c6\u7fa4\u4e2d\u7684\u771f\u5b9e\u673a\u5668\u4e0a\uff0c\u5b83\u5747\u7b49\u7684\u5bf9\u5f85\u6bcf\u4e00\u53f0\u670d\u52a1\u5668\uff0c\u800c\u4e0d\u7ba1\u670d\u52a1\u5668\u5b9e\u9645\u7684\u8fde\u63a5\u6570\u548c\u7cfb\u7edf\u8d1f\u8f7d\u3002<\/p>\n<p>\u52a0\u6743\u8f6e\u5faa\uff08wrr, Weighted Round Robin\uff09<br \/> \u8c03\u5ea6\u5668\u901a\u8fc7\u201c\u52a0\u6743\u8f6e\u5faa\u201d\u8c03\u5ea6\u7b97\u6cd5\u6839\u636e\u771f\u5b9e\u670d\u52a1\u5668\u7684\u4e0d\u540c\u5904\u7406\u80fd\u529b\u6765\u8c03\u5ea6\u8bbf\u95ee\u8bf7\u6c42\u3002\u8fd9\u6837\u53ef\u4ee5\u4fdd\u8bc1\u5904\u7406\u80fd\u529b\u5f3a\u7684\u670d\u52a1\u5668\u80fd\u5904\u7406\u66f4\u591a\u7684\u8bbf\u95ee\u6d41\u91cf\u3002\u8c03\u5ea6\u5668\u53ef\u4ee5\u81ea\u52a8\u95ee\u8be2\u771f\u5b9e\u670d\u52a1\u5668\u7684\u8d1f\u8f7d\u60c5\u51b5\uff0c\u5e76\u52a8\u6001\u7684\u8c03\u6574\u5176\u6743\u503c\u3002<\/p>\n<p>\u76ee\u6807\u5730\u5740\u6563\u5217\uff08DH, Destination Hashing\uff09<br \/> \u201c\u76ee\u6807\u5730\u5740\u6563\u5217\u201d\u8c03\u5ea6\u7b97\u6cd5\u6839\u636e\u8bf7\u6c42\u7684\u76ee\u6807IP\u5730\u5740\uff0c\u4f5c\u4e3a\u6563\u5217\u952e\uff08Hash Key\uff09\u4ece\u9759\u6001\u5206\u914d\u7684\u6563\u5217\u5217\u8868\u627e\u51fa\u5bf9\u5e94\u7684\u670d\u52a1\u5668\uff0c\u82e5\u8be5\u670d\u52a1\u5668\u662f\u53ef\u7528\u7684\u4e14\u672a\u8d85\u8f7d\uff0c\u5c06\u8bf7\u6c42\u53d1\u9001\u5230\u8be5\u670d\u52a1\u5668\uff0c\u5426\u5219\u8fd4\u56de\u7a7a\u3002<\/p>\n<p>\u6e90\u5730\u5740\u6563\u5217\uff08SH, Source Hashing\uff09<br \/> \u201c\u6e90\u5730\u5740\u6563\u5217\u201d\u8c03\u5ea6\u7b97\u6cd5\u6839\u636e\u8bf7\u6c42\u7684\u6e90IP\u5730\u5740\uff0c\u4f5c\u4e3a\u6563\u5217\u952e\uff08Hash Key\uff09\u4ece\u9759\u6001\u5206\u914d\u7684\u6563\u5217\u8868\u627e\u5230\u5bf9\u5e94\u7684\u670d\u52a1\u5668\uff0c\u82e5\u8be5\u670d\u52a1\u5668\u662f\u53ef\u7528\u7684\u4e14\u672a\u8d85\u8f7d\uff0c\u5c06\u8bf7\u6c42\u53d1\u9001\u5230\u8be5\u670d\u52a1\u5668\uff0c\u5426\u5219\u8fd4\u56de\u7a7a\u3002<\/p>\n<p>2. LVS\u8d1f\u8f7d\u5747\u8861\u7684\u8c03\u5ea6\u7b97\u6cd5\u4e8c\uff08\u52a8\u6001\uff09<\/p>\n<p>\u6700\u5c11\u94fe\u63a5\uff08LC, Least Connections\uff09<br \/> \u8c03\u5ea6\u5668\u901a\u8fc7\u201c\u6700\u5c11\u94fe\u63a5\u201d\u8c03\u5ea6\u7b97\u6cd5\u52a8\u6001\u7684\u5c06\u7f51\u7edc\u8bf7\u6c42\u8c03\u5ea6\u5230\u5df2\u5efa\u7acb\u7684\u94fe\u63a5\u6570\u6700\u5c11\u7684\u670d\u52a1\u5668\u4e0a\u3002\u5982\u679c\u96c6\u7fa4\u7cfb\u7edf\u7684\u771f\u5b9e\u670d\u52a1\u5668\u5177\u6709\u76f8\u8fd1\u7684\u7cfb\u7edf\u6027\u80fd\uff0c\u91c7\u7528\u201c\u6700\u5c11\u8fde\u63a5\u201d\u8c03\u5ea6\u7b97\u6cd5\u53ef\u4ee5\u8f83\u597d\u7684\u5747\u8861\u8d1f\u8f7d\u3002<br \/> OL(Over Load)=active * 256 + deactive<\/p>\n<p>\u52a0\u6743\u6700\u5c11\u94fe\u63a5\uff08WLC, Weighted Least Connections\uff09<br \/> \u5728\u96c6\u7fa4\u7cfb\u7edf\u4e2d\u7684\u670d\u52a1\u5668\u6027\u80fd\u5dee\u5f02\u8f83\u5927\u7684\u60c5\u51b5\u4e0b\uff0c\u8c03\u5ea6\u5668\u91c7\u7528\u201c\u52a0\u6743\u6700\u5c11\u8fde\u63a5\u201d\u8c03\u5ea6\u7b97\u6cd5\u4f18\u5316\u8d1f\u8f7d\u5747\u8861\u6027\u80fd\uff0c\u5177\u6709\u8f83\u9ad8\u6743\u503c\u7684\u670d\u52a1\u5668\u5c06\u627f\u53d7\u8f83\u5927\u6bd4\u4f8b\u7684\u6d3b\u52a8\u8fde\u63a5\u8d1f\u8f7d\u3002\u8c03\u5ea6\u5668\u53ef\u4ee5\u81ea\u52a8\u95ee\u8be2\u771f\u5b9e\u670d\u52a1\u5668\u7684\u8d1f\u8f7d\u60c5\u51b5\uff0c\u5e76\u52a8\u6001\u7684\u8c03\u6574\u5176\u6743\u503c\u3002<br \/> OL(Over Load)=(active * 256 + deactive) \/ weighted<\/p>\n<p>\u6700\u77ed\u7684\u671f\u671b\u5ef6\u8fdf\uff08SED, Shortest Expected Delay Scheduling\uff09<\/p>\n<p>\u6700\u5c11\u961f\u5217\u8c03\u5ea6\uff08NQ, Never Queue Scheduling\uff09<br \/> \u65e0\u9700\u6392\u961f\u3002\u5982\u679c\u6709\u53f0Real Server\u7684\u8fde\u63a5\u6570\u7b49\u4e8e0\u5c31\u76f4\u63a5\u5206\u914d\u8fc7\u53bb\uff0c\u4e0d\u9700\u8981\u518d\u8fdb\u884cSED\u8fd0\u7b97\u3002<\/p>\n<p>\u57fa\u4e8e\u5c40\u90e8\u6027\u7684\u6700\u5c11\u94fe\u63a5\uff08LBLC, Locality-Based Least Connections\uff09<br \/> \u201c\u57fa\u4e8e\u5c40\u90e8\u6027\u7684\u6700\u5c11\u8fde\u63a5\u201d\u8c03\u5ea6\u7b97\u6cd5\u662f\u9488\u5bf9\u76ee\u6807IP\u5730\u5740\u7684\u8d1f\u8f7d\u5747\u8861\uff0c\u76ee\u524d\u4e3b\u8981\u7528\u4e8eCache\u96c6\u7fa4\u7cfb\u7edf\u3002\u8be5\u7b97\u6cd5\u6839\u636e\u8bf7\u6c42\u7684\u76ee\u6807IP\u5730\u5740\u627e\u51fa\u8be5\u76ee\u6807IP\u6700\u8fd1\u4f7f\u7528\u7684\u670d\u52a1\u5668\uff0c\u82e5\u8be5\u670d\u52a1\u5668\u662f\u53ef\u7528\u7684\u4e14\u6ca1\u6709\u8d85\u8f7d\uff0c\u5c06\u8bf7\u6c42\u53d1\u9001\u5230\u8be5\u670d\u52a1\u5668\uff1b\u82e5\u670d\u52a1\u5668\u4e0d\u5b58\u5728\uff0c\u6216\u8005\u8be5\u670d\u52a1\u5668\u8d85\u8f7d\u4e14\u6709\u670d\u52a1\u5668\u5904\u4e8e\u4e00\u534a\u7684\u5de5\u4f5c\u8d1f\u8f7d\uff0c\u5219\u7528\u201c\u6700\u5c11\u8fde\u63a5\u201d\u7684\u539f\u5219\u9009\u51fa\u4e00\u4e2a\u53ef\u7528\u7684\u670d\u52a1\u5668\uff0c\u5c06\u8bf7\u6c42\u53d1\u9001\u5230\u8be5\u670d\u52a1\u5668\u3002<\/p>\n<p>\u5e26\u590d\u5236\u7684\u57fa\u4e8e\u5c40\u90e8\u6027\u6700\u5c11\u94fe\u63a5\uff08LBLCR, Locality-Based Least Connections with Repilcation\uff09<br \/> \u201c\u5e26\u590d\u5236\u7684\u57fa\u4e8e\u5c40\u90e8\u6027\u6700\u5c11\u8fde\u63a5\u201d\u8c03\u5ea6\u7b97\u6cd5\u4e5f\u662f\u9488\u5bf9\u76ee\u6807IP\u5730\u5740\u7684\u8d1f\u8f7d\u5747\u8861\uff0c\u76ee\u524d\u4e3b\u8981\u7528\u4e8eCache\u96c6\u7fa4\u7cfb\u7edf\u3002\u5b83\u4e0eLBLC\u7b97\u6cd5\u7684\u4e0d\u540c\u4e4b\u5904\u662f\u5b83\u8981\u7ef4\u62a4\u4ece\u4e00\u4e2a\u76ee\u6807IP\u5730\u5740\u5230\u4e00\u7ec4\u670d\u52a1\u5668\u7684\u6620\u5c04\uff0c\u800cLBLC\u7b97\u6cd5\u7ef4\u62a4\u4ece\u4e00\u4e2a\u76ee\u6807IP\u5730\u5740\u5230\u4e00\u53f0\u670d\u52a1\u5668\u7684\u6620\u5c04\u3002\u8be5\u7b97\u6cd5\u6839\u636e\u8bf7\u6c42\u7684\u76ee\u6807IP\u5730\u5740\u627e\u51fa\u8be5\u76ee\u6807IP\u5730\u5740\u5bf9\u5e94\u7684\u670d\u52a1\u5668\u7ec4\uff0c\u6309\u201c\u6700\u5c11\u8fde\u63a5\u201d\u539f\u5219\u4ece\u670d\u52a1\u5668\u7ec4\u4e2d\u9009\u51fa\u4e00\u53f0\u670d\u52a1\u5668\uff0c\u82e5\u670d\u52a1\u5668\u6ca1\u6709\u8d85\u8f7d\uff0c\u5c06\u8bf7\u6c42\u53d1\u5230\u8be5\u670d\u52a1\u5668\uff1b\u82e5\u670d\u52a1\u5668\u8d85\u8f7d\uff0c\u5219\u6309\u201c\u6700\u5c11\u8fde\u63a5\u201d\u539f\u5219\u4ece\u8fd9\u4e2a\u96c6\u7fa4\u4e2d\u9009\u51fa\u4e00\u53f0\u670d\u52a1\u5668\uff0c\u5c06\u8be5\u670d\u52a1\u5668\u52a0\u5165\u5230\u670d\u52a1\u5668\u7ec4\u4e2d\uff0c\u5c06\u8bf7\u6c42\u53d1\u9001\u5230\u8be5\u670d\u52a1\u5668\u3002\u540c\u65f6\uff0c\u5f53\u8be5\u670d\u52a1\u5668\u7ec4\u6709\u4e00\u6bb5\u65f6\u95f4\u6ca1\u6709\u88ab\u4fee\u6539\uff0c\u5c06\u6700\u5fd9\u7684\u670d\u52a1\u5668\u4ece\u670d\u52a1\u5668\u7ec4\u4e2d\u5220\u9664\uff0c\u4ee5\u964d\u4f4e\u590d\u5236\u7684\u7a0b\u5ea6\u3002<\/p>\n<p><strong>\u56db\u3001\u7b80\u5355\u5b9e\u9a8c\u4e4bLVS-NAT\u6a21\u5f0f<\/strong>   <\/p>\n<pre>\u5b9e\u9a8c\u73af\u5883\uff1aCentOS6.5\uff0c\u5173\u95ediptables\/selinux\n\nClient: 172.16.1.100\nDirector Server: \n\u3000\u3000eth0 - 192.168.1.100\n\u3000\u3000eth1 - 172.16.1.101 (VIP)\nRealServer01: 192.168.1.101\nRealServer02: 192.168.1.102\n<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/001\/246\/273\/172888460016326.jpg\" class=\"aligncenter\" title=\"Linux\u4e4b\u865a\u62df\u670d\u52a1\u5668LVS\u642d\u5efa\u63d2\u56fe\" alt=\"Linux\u4e4b\u865a\u62df\u670d\u52a1\u5668LVS\u642d\u5efa\u63d2\u56fe\" \/><\/p>\n<p>1\u3001RS\u914d\u7f6e\uff1a<\/p>\n<pre>\u3000\u3000a. \u4e24\u53f0RS\u7684\u7f51\u5361\u914d\u7f6e\u4e2d\u7f51\u5173\u5747\u914d\u7f6e\u4e3aDS\u7684eth0 IP: 192.168.1.100\n\n\u3000\u3000b. \u56e0\u4e3a\u6ca1\u6709\u505a\u5171\u4eab\u5b58\u50a8\uff0c\u53ea\u5728\u5404\u81ea\u7684\u4e3b\u9875\u6587\u4ef6\u4e2d\u52a0\u5165\u4e0d\u540c\u4fe1\u606f\u4ee5\u793a\u533a\u522b\uff1a\n\n\u3000\u3000\u3000\u3000RealServer01 # echo \"RealServer01\" &gt; \/var\/log\/index.html\n\u3000\u3000\u3000\u3000RealServer02 # echo \"RealServer02\" &gt; \/var\/log\/index.html\n<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>2\u3001DS\u914d\u7f6e\uff1a<\/p>\n<p>a) \u5f00\u542fipv4\u8f6c\u53d1<\/p>\n<pre># vi \/etc\/sysctl.conf\nnet.ipv4.ip_forward = 1\n\u3000\u3000b) \u5b89\u88c5\u542f\u52a8ipvsadm\n\n# yum install ipvsadm -y\n# service ipvsadm start\n<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>c) \u589e\u52a0\u89c4\u5219<\/p>\n<pre># ipvsadm -A -t 172.16.1.101:80 -s rr\n# ipvsadm -a -t 172.16.1.101:80 -r 192.168.1.101 -m -w 1\n# ipvsadm -a -t 172.16.1.101:80 -r 192.168.1.102 -m -w 2\n\u3000\u3000d) \u67e5\u770b\u5e76\u4fdd\u5b58\n<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236    <\/p>\n<pre>[root@director ~]# ipvsadm -L -n\nIP Virtual Server version 1.2.1 (size=4096)\nProt LocalAddress:Port Scheduler Flags\n  -&gt; RemoteAddress:Port           Forward Weight ActiveConn InActConn\nTCP  172.16.1.101:80 rr\n  -&gt; 192.168.1.101:80             Masq    1      0          0         \n  -&gt; 192.168.1.102:80             Masq    2      0          0\n\n[root@director ~]# service ipvsadm save\nipvsadm: Saving IPVS table to \/etc\/sysconfig\/ipvsadm:      [\u786e\u5b9a]\n<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>e) \u5728Client\u6d4b\u8bd5\u7684\u7ed3\u679c<br \/> rr\u8c03\u5ea6\u7b97\u6cd5\u7ed3\u679c\uff1a<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/001\/246\/273\/172888460094615.jpg\" class=\"aligncenter\" title=\"Linux\u4e4b\u865a\u62df\u670d\u52a1\u5668LVS\u642d\u5efa\u63d2\u56fe1\" alt=\"Linux\u4e4b\u865a\u62df\u670d\u52a1\u5668LVS\u642d\u5efa\u63d2\u56fe1\" \/><\/p>\n<p>wrr\u8c03\u5ea6\u7b97\u6cd5\u7ed3\u679c\uff1a<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/001\/246\/273\/172888460077219.jpg\" class=\"aligncenter\" title=\"Linux\u4e4b\u865a\u62df\u670d\u52a1\u5668LVS\u642d\u5efa\u63d2\u56fe2\" alt=\"Linux\u4e4b\u865a\u62df\u670d\u52a1\u5668LVS\u642d\u5efa\u63d2\u56fe2\" \/><\/p>\n<pre># ipvsadm -E -t 172.16.1.101:80 -s wrr\n\n<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236<br \/>\n<strong>\u4e94\u3001\u6269\u5c55 &#8211; \u5229\u7528apache ab\u5de5\u5177\u6765\u6a21\u62df\u5927\u91cfrequests<\/strong>  <\/p>\n<p>ab\u547d\u4ee4\u57fa\u672c\u53c2\u6570\uff1a<\/p>\n<pre>-n \u6267\u884c\u7684\u8bf7\u6c42\u6570\u91cf\n-c \u5e76\u53d1\u8bf7\u6c42\u4e2a\u6570\n\u5176\u5b83\u53c2\u6570\uff1a\n\n-t \u6d4b\u8bd5\u6240\u8fdb\u884c\u7684\u6700\u5927\u79d2\u6570\n-p \u5305\u542b\u4e86\u9700\u8981POST\u7684\u6570\u636e\u7684\u6587\u4ef6\n-T POST\u6570\u636e\u6240\u4f7f\u7528\u7684Content-type\u5934\u4fe1\u606f\n-k \u542f\u7528HTTP KeepAlive\u529f\u80fd\uff0c\u5373\u5728\u4e00\u4e2aHTTP\u4f1a\u8bdd\u4e2d\u6267\u884c\u591a\u4e2a\u8bf7\u6c42\uff0c\u9ed8\u8ba4\u65f6\uff0c\u4e0d\u542f\u7528KeepAlive\u529f\u80fd\n<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u6d4b\u8bd5\u6848\u4f8b\uff1a<\/p>\n<p># yum -y install httpd-tools<br \/> # ab -c 10 -n 10000 http:\/\/172.16.1.101\/index.html<\/p>\n<pre># \u6d4b\u8bd5\u5b8c\u6210\u8fdb\u5ea6\nBenchmarking 172.16.1.101 (be patient)\nCompleted 100 requests\nCompleted 200 requests\nCompleted 300 requests\nCompleted 400 requests\nCompleted 500 requests\nCompleted 600 requests\nCompleted 700 requests\nCompleted 800 requests\nCompleted 900 requests\nCompleted 1000 requests\nFinished 1000 requests\n\nServer Software:        Apache\/2.2.15\nServer Hostname:        172.16.1.101\nServer Port:            80\n\nDocument Path:          \/index.html     # \u8bf7\u6c42\u7684\u8d44\u6e90\nDocument Length:        14 bytes         #\u8fd4\u56de\u7684\u957f\u5ea6\n\nConcurrency Level:      10         # \u5e76\u53d1\u4e2a\u6570\nTime taken for tests:   0.262 seconds     # \u603b\u8bf7\u6c42\u65f6\u95f4\nComplete requests:      1000     # \u603b\u8bf7\u6c42\u6570\nFailed requests:        0         # \u5931\u8d25\u7684\u8bf7\u6c42\u6570\nWrite errors:           0\nTotal transferred:      280840 bytes\nHTML transferred:       14042 bytes\nRequests per second:    3816.98 [#\/sec] (mean)     # \u5e73\u5747\u6bcf\u79d2\u7684\u8bf7\u6c42\u6570\nTime per request:       2.620 [ms] (mean)         # \u5e73\u5747\u6bcf\u4e2a\u8bf7\u6c42\u6d88\u8017\u7684\u65f6\u95f4\nTime per request:       0.262 [ms] (mean, across all concurrent requests)\nTransfer rate:          1046.84 [Kbytes\/sec] received    # \u4f20\u8f93\u901f\u7387\n\nConnection Times (ms)\n              min  mean[+\/-sd] median   max\nConnect:        0    1   0.4      1       3\nProcessing:     1    2   0.6      1       7\nWaiting:        0    1   0.6      1       4\nTotal:          1    3   0.8      2       7\n\nPercentage of the requests served within a certain time (ms)\n  50%      2     # 50%\u7684requests\u90fd\u57282ms\u5185\u5b8c\u6210\n  66%      3\n  75%      3\n  80%      3\n  90%      4\n  95%      4\n  98%      4\n  99%      5\n 100%      7 (longest request)\n<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8bf4\u660e\uff1a\u7531\u4e8e\u7f3a\u4e4f\u5b9e\u9645requests\uff0c\u65e0\u6cd5\u6a21\u62df\u5176\u5b83\u52a8\u6001\u8c03\u5ea6\u7b97\u6cd5\u7684\u6548\u679c\uff0c\u6682\u65f6\u8bb0\u5f55\u5230\u8fd9\u91cc\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fLinux\u4e4b\u865a\u62df\u670d\u52a1\u5668LVS\u642d\u5efa\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001\u76f8\u5173\u672f\u8bed 1. DS\uff1aDirector Server\u3002\u6307\u7684\u662f\u524d\u7aef\u8d1f\u8f7d\u5747\u8861\u5668\u8282\u70b9\u3002 2. RS\uff1aReal Server\u3002\u540e\u7aef\u771f\u5b9e\u7684\u5de5\u4f5c\u670d\u52a1\u5668\u3002 3. VIP\uff1a\u5411\u5916\u90e8\u76f4\u63a5\u9762\u5411\u7528\u6237\u8bf7\u6c42\uff0c\u4f5c\u4e3a\u7528\u6237\u8bf7\u6c42\u7684\u76ee\u6807\u7684IP\u5730\u5740\u3002 4. DIP\uff1aDirector Server IP\uff0c\u4e3b\u8981\u7528\u4e8e\u548c\u5185\u90e8\u4e3b\u673a\u901a\u8baf\u7684IP\u5730\u5740\u3002 5. RIP\uff1aReal Server IP\uff0c\u540e\u7aef\u670d\u52a1\u5668\u7684IP\u5730\u5740\u3002 6. 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