{"id":5311,"date":"2021-06-09T19:29:50","date_gmt":"2021-06-09T11:29:50","guid":{"rendered":"https:\/\/damogame.cn\/wordpress\/?p=5311"},"modified":"2021-06-09T19:29:50","modified_gmt":"2021-06-09T11:29:50","slug":"%e7%9c%8b%e5%9b%be%e8%bd%bb%e6%9d%be%e4%ba%86%e8%a7%a3etcd","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/5311","title":{"rendered":"\u770b\u56fe\u8f7b\u677e\u4e86\u89e3etcd"},"content":{"rendered":"<p class=\"h2 mb-3\"><a href=\"https:\/\/segmentfault.com\/a\/1190000020742981\">\u539f\u6587\u5730\u5740<\/a><\/p>\n<div id=\"OA_holder_25\" class=\"ad-container\"><\/div>\n<article class=\"article fmt article-content \">\u7528\u4e00\u4e9b\u56fe\u793a\u7ed3\u5408\u573a\u666f\u548c\u6587\u5b57\u8f7b\u677e\u4e86\u89e3etcd\uff0c\u6587\u7ae0\u662f\u9488\u5bf9etcd\u521d\u5b66\u8005\u7684\uff0c\u76ee\u7684\u662f\u8ba9\u5927\u5bb6\u4e86\u89e3etcd\u662f\u4ec0\u4e48\u3001\u4e3b\u8981\u5728\u4ec0\u4e48\u573a\u666f\u4e0b\u4f7f\u7528\u3001etcd\u96c6\u7fa4\u662f\u600e\u4e48\u5de5\u4f5c\u7684\u4ee5\u53ca\u521b\u5efa\u96c6\u7fa4\u65f6\u5e94\u8be5\u5982\u4f55\u9009\u62e9\u96c6\u7fa4\u7684\u8282\u70b9\u6570\u3002<\/p>\n<p>etcd \u662f\u4e00\u4e2a\u9ad8\u53ef\u7528\u5f3a\u4e00\u81f4\u6027\u7684\u952e\u503c\u4ed3\u5e93\u5728\u5f88\u591a\u5206\u5e03\u5f0f\u7cfb\u7edf\u67b6\u6784\u4e2d\u5f97\u5230\u4e86\u5e7f\u6cdb\u7684\u5e94\u7528\uff0c\u5176\u6700\u7ecf\u5178\u7684\u4f7f\u7528\u573a\u666f\u5c31\u662f\u670d\u52a1\u53d1\u73b0\u3002<\/p>\n<p>\u4f5c\u4e3a\u4e00\u4e2a\u53d7\u5230 ZooKeeper\u542f\u53d1\u800c\u50ac\u751f\u7684\u9879\u76ee\uff0c\u5b83\u9664\u4e86\u62e5\u6709\u4e0e\u4e4b\u7c7b\u4f3c\u7684\u529f\u80fd\u5916\uff0c\u66f4\u4e13\u6ce8\u4e8e\u4ee5\u4e0b\u56db\u70b9\u3002<\/p>\n<ul>\n<li>\u7b80\u5355\uff1a\u6613\u4e8e\u90e8\u7f72\uff0c\u6613\u4f7f\u7528\u3002\u57fa\u4e8e HTTP+JSON \u7684 API \u8ba9\u4f60\u7528 curl \u5c31\u53ef\u4ee5\u8f7b\u677e\u4f7f\u7528\u3002<\/li>\n<li>\u5b89\u5168\uff1a\u53ef\u9009 SSL \u5ba2\u6237\u8ba4\u8bc1\u673a\u5236\u3002<\/li>\n<li>\u5feb\u901f\uff1a\u6bcf\u4e2a\u5b9e\u4f8b\u6bcf\u79d2\u652f\u6301\u4e00\u5343\u6b21\u5199\u64cd\u4f5c\u3002<\/li>\n<li>\u53ef\u4fe1\uff1a\u4f7f\u7528\u4e00\u81f4\u6027 Raft \u7b97\u6cd5\u5145\u5206\u5b9e\u73b0\u4e86\u5206\u5e03\u5f0f\u3002<\/li>\n<\/ul>\n<p>etcd \u7684\u573a\u666f\u9ed8\u8ba4\u5904\u7406\u7684\u6570\u636e\u90fd\u662f\u7cfb\u7edf\u4e2d\u7684\u63a7\u5236\u6570\u636e\u3002\u6240\u4ee5etcd\u5728\u7cfb\u7edf\u4e2d\u7684\u89d2\u8272\u4e0d\u662f\u5176\u4ed6NoSQL\u4ea7\u54c1\u7684\u66ff\u4ee3\u54c1\uff0c\u66f4\u4e0d\u80fd\u4f5c\u4e3a\u5e94\u7528\u7684\u4e3b\u8981\u6570\u636e\u5b58\u50a8\u3002etcd\u4e2d\u5e94\u8be5\u5c3d\u91cf\u53ea\u5b58\u50a8\u7cfb\u7edf\u4e2d\u670d\u52a1\u7684\u914d\u7f6e\u4fe1\u606f\uff0c\u5bf9\u4e8e\u5e94\u7528\u6570\u636e\u53ea\u63a8\u8350\u628a\u6570\u636e\u91cf\u5f88\u5c0f\uff0c\u4f46\u662f\u66f4\u65b0\u548c\u8bbf\u95ee\u9891\u6b21\u90fd\u5f88\u9ad8\u7684\u6570\u636e\u5b58\u50a8\u5728etcd\u4e2d\u3002<\/p>\n<h3 id=\"item-1\">\u670d\u52a1\u53d1\u73b0\uff08Service Discovery\uff09<\/h3>\n<p>\u670d\u52a1\u53d1\u73b0\u8981\u89e3\u51b3\u7684\u662f\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u6700\u5e38\u89c1\u7684\u95ee\u9898\u4e4b\u4e00\uff0c\u5373\u5728\u540c\u4e00\u4e2a\u5206\u5e03\u5f0f\u96c6\u7fa4\u4e2d\u7684\u8fdb\u7a0b\u6216\u670d\u52a1\uff0c\u8981\u5982\u4f55\u624d\u80fd\u627e\u5230\u5bf9\u65b9\u5e76\u5efa\u7acb\u8fde\u63a5\u3002\u672c\u8d28\u4e0a\u6765\u8bf4\uff0c\u670d\u52a1\u53d1\u73b0\u5c31\u662f\u60f3\u8981\u4e86\u89e3\u96c6\u7fa4\u4e2d\u662f\u5426\u6709\u8fdb\u7a0b\u5728\u76d1\u542c udp \u6216 tcp \u7aef\u53e3\uff0c\u5e76\u4e14\u901a\u8fc7\u540d\u5b57\u5c31\u53ef\u4ee5\u67e5\u627e\u548c\u8fde\u63a5\u3002\u8981\u89e3\u51b3\u670d\u52a1\u53d1\u73b0\u7684\u95ee\u9898\uff0c\u9700\u8981\u6709\u4e0b\u9762\u4e09\u5927\u652f\u67f1\uff0c\u7f3a\u4e00\u4e0d\u53ef\u3002<\/p>\n<ol>\n<li><strong>\u4e00\u4e2a\u5f3a\u4e00\u81f4\u6027\u3001\u9ad8\u53ef\u7528\u7684\u670d\u52a1\u5b58\u50a8\u76ee\u5f55<\/strong>\u3002\u57fa\u4e8e Raft \u7b97\u6cd5\u7684 etcd \u5c31\u662f\u4e00\u4e2a\u5f3a\u4e00\u81f4\u6027\u9ad8\u53ef\u7528\u7684\u670d\u52a1\u5b58\u50a8\u76ee\u5f55\u3002<\/li>\n<li><strong>\u4e00\u79cd\u6ce8\u518c\u670d\u52a1\u548c\u76d1\u63a7\u670d\u52a1\u5065\u5eb7\u72b6\u6001\u7684\u673a\u5236<\/strong>\u3002\u7528\u6237\u53ef\u4ee5\u5728 etcd \u4e2d\u6ce8\u518c\u670d\u52a1\uff0c\u5e76\u4e14\u5bf9\u6ce8\u518c\u7684\u670d\u52a1\u8bbe\u7f6e\u00a0<code>key TTL<\/code>\uff0c\u5b9a\u65f6\u4fdd\u6301\u670d\u52a1\u7684\u5fc3\u8df3\u4ee5\u8fbe\u5230\u76d1\u63a7\u5065\u5eb7\u72b6\u6001\u7684\u6548\u679c\u3002<\/li>\n<li><strong>\u4e00\u79cd\u67e5\u627e\u548c\u8fde\u63a5\u670d\u52a1\u7684\u673a\u5236<\/strong>\u3002\u901a\u8fc7\u5728 etcd \u6307\u5b9a\u7684\u4e3b\u9898\uff08\u7531\u670d\u52a1\u540d\u79f0\u6784\u6210\u7684\u670d\u52a1\u76ee\u5f55\uff09\u4e0b\u6ce8\u518c\u7684\u670d\u52a1\u4e5f\u80fd\u5728\u5bf9\u5e94\u7684\u4e3b\u9898\u4e0b\u67e5\u627e\u5230\u3002<\/li>\n<\/ol>\n<h3 id=\"item-2\">etcd\u7684\u6838\u5fc3\u7ec4\u4ef6<\/h3>\n<p><span class=\"img-wrap\"><img decoding=\"async\" class=\"lazy entered loaded exited\" title=\"img\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000021033998\" alt=\"img\" data-src=\"\/img\/remote\/1460000021033998\" data-ll-status=\"loaded\" \/><\/span><\/p>\n<p>\u4ece etcd \u7684\u67b6\u6784\u56fe\u4e2d\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0cetcd \u4e3b\u8981\u5206\u4e3a\u56db\u4e2a\u90e8\u5206\u3002<\/p>\n<ul>\n<li>HTTP Server\uff1a\u7528\u4e8e\u5904\u7406\u7528\u6237\u53d1\u9001\u7684 API \u8bf7\u6c42\u4ee5\u53ca\u5176\u5b83 etcd \u8282\u70b9\u7684\u540c\u6b65\u4e0e\u5fc3\u8df3\u4fe1\u606f\u8bf7\u6c42\u3002<\/li>\n<li>Store\uff1a\u7528\u4e8e\u5904\u7406 etcd \u652f\u6301\u7684\u5404\u7c7b\u529f\u80fd\u7684\u4e8b\u52a1\uff0c\u5305\u62ec\u6570\u636e\u7d22\u5f15\u3001\u8282\u70b9\u72b6\u6001\u53d8\u66f4\u3001\u76d1\u63a7\u4e0e\u53cd\u9988\u3001\u4e8b\u4ef6\u5904\u7406\u4e0e\u6267\u884c\u7b49\u7b49\uff0c\u662f etcd \u5bf9\u7528\u6237\u63d0\u4f9b\u7684\u5927\u591a\u6570 API \u529f\u80fd\u7684\u5177\u4f53\u5b9e\u73b0\u3002<\/li>\n<li>Raft\uff1aRaft \u5f3a\u4e00\u81f4\u6027\u7b97\u6cd5\u7684\u5177\u4f53\u5b9e\u73b0\uff0c\u662f etcd \u7684\u6838\u5fc3\u3002<\/li>\n<li>WAL\uff1aWrite Ahead Log\uff08\u9884\u5199\u5f0f\u65e5\u5fd7\uff09\uff0c\u662f etcd \u7684\u6570\u636e\u5b58\u50a8\u65b9\u5f0f\u3002\u9664\u4e86\u5728\u5185\u5b58\u4e2d\u5b58\u6709\u6240\u6709\u6570\u636e\u7684\u72b6\u6001\u4ee5\u53ca\u8282\u70b9\u7684\u7d22\u5f15\u4ee5\u5916\uff0cetcd \u5c31\u901a\u8fc7 WAL \u8fdb\u884c\u6301\u4e45\u5316\u5b58\u50a8\u3002WAL \u4e2d\uff0c\u6240\u6709\u7684\u6570\u636e\u63d0\u4ea4\u524d\u90fd\u4f1a\u4e8b\u5148\u8bb0\u5f55\u65e5\u5fd7\u3002Snapshot \u662f\u4e3a\u4e86\u9632\u6b62\u6570\u636e\u8fc7\u591a\u800c\u8fdb\u884c\u7684\u72b6\u6001\u5feb\u7167\uff1bEntry \u8868\u793a\u5b58\u50a8\u7684\u5177\u4f53\u65e5\u5fd7\u5185\u5bb9\u3002<\/li>\n<\/ul>\n<p>\u901a\u5e38\uff0c\u4e00\u4e2a\u7528\u6237\u7684\u8bf7\u6c42\u53d1\u9001\u8fc7\u6765\uff0c\u4f1a\u7ecf\u7531 HTTP Server \u8f6c\u53d1\u7ed9 Store \u8fdb\u884c\u5177\u4f53\u7684\u4e8b\u52a1\u5904\u7406\uff0c\u5982\u679c\u6d89\u53ca\u5230\u8282\u70b9\u7684\u4fee\u6539\uff0c\u5219\u4ea4\u7ed9 Raft \u6a21\u5757\u8fdb\u884c\u72b6\u6001\u7684\u53d8\u66f4\u3001\u65e5\u5fd7\u7684\u8bb0\u5f55\uff0c\u7136\u540e\u518d\u540c\u6b65\u7ed9\u522b\u7684 etcd \u8282\u70b9\u4ee5\u786e\u8ba4\u6570\u636e\u63d0\u4ea4\uff0c\u6700\u540e\u8fdb\u884c\u6570\u636e\u7684\u63d0\u4ea4\uff0c\u518d\u6b21\u540c\u6b65\u3002<\/p>\n<h3 id=\"item-3\">\u7528\u6237\u4ece\u96c6\u7fa4\u4e2d\u54ea\u4e2a\u8282\u70b9\u8bfb\u5199\u6570\u636e\uff1f<\/h3>\n<p>\u4e3a\u4e86\u4fdd\u8bc1\u6570\u636e\u7684\u5f3a\u4e00\u81f4\u6027\uff0cetcd\u96c6\u7fa4\u4e2d\u6240\u6709\u7684\u6570\u636e\u6d41\u5411\u90fd\u662f\u4e00\u4e2a\u65b9\u5411\uff0c\u4ece Leader \uff08\u4e3b\u8282\u70b9\uff09\u6d41\u5411 Follower\uff0c\u4e5f\u5c31\u662f\u6240\u6709 Follower \u7684\u6570\u636e\u5fc5\u987b\u4e0e Leader \u4fdd\u6301\u4e00\u81f4\uff0c\u5982\u679c\u4e0d\u4e00\u81f4\u4f1a\u88ab\u8986\u76d6\u3002<\/p>\n<p>\u7b80\u5355\u70b9\u8bf4\u5c31\u662f\uff0c\u7528\u6237\u53ef\u4ee5\u5bf9etcd\u96c6\u7fa4\u4e2d\u7684\u6240\u6709\u8282\u70b9\u8fdb\u884c\u8bfb\u5199\uff0c\u8bfb\u53d6\u975e\u5e38\u7b80\u5355\u56e0\u4e3a\u6bcf\u4e2a\u8282\u70b9\u4fdd\u5b58\u7684\u6570\u636e\u662f\u5f3a\u4e00\u81f4\u7684\u3002\u5bf9\u4e8e\u5199\u5165\u6765\u8bf4\uff0cetcd\u96c6\u7fa4\u4e2d\u7684\u8282\u70b9\u4f1a\u9009\u4e3e\u51faLeader\u8282\u70b9\uff0c\u5982\u679c\u5199\u5165\u8bf7\u6c42\u6765\u81eaLeader\u8282\u70b9\u5373\u53ef\u76f4\u63a5\u5199\u5165\u7136\u540eLeader\u8282\u70b9\u4f1a\u628a\u5199\u5165\u5206\u53d1\u7ed9\u6240\u6709Follower\uff0c\u5982\u679c\u5199\u5165\u8bf7\u6c42\u6765\u81ea\u5176\u4ed6Follower\u8282\u70b9\u90a3\u4e48\u5199\u5165\u8bf7\u6c42\u4f1a\u7ed9\u8f6c\u53d1\u7ed9Leader\u8282\u70b9\uff0c\u7531Leader\u8282\u70b9\u5199\u5165\u4e4b\u540e\u518d\u5206\u53d1\u7ed9\u96c6\u7fa4\u4e0a\u7684\u6240\u6709\u5176\u4ed6\u8282\u70b9\u3002<\/p>\n<p>\u4e0b\u9762\u7684\u56fe\u793a\u4e2d1\u30013\u8282\u70b9\u90fd\u6709\u5199\u5165\u8bf7\u6c42\uff0c\u8282\u70b91\u4e3aLeader\u6240\u4ee53\u7684\u5199\u5165\u8bf7\u6c42\u4f1a\u8f6c\u53d1\u7ed91\uff0c\u5199\u5165\u5b8c\u6210\u540e\u518d\u540c\u6b65\u7ed9\u6240\u6709\u8282\u70b9\u3002<\/p>\n<p><span class=\"img-wrap\"><img decoding=\"async\" class=\"lazy entered loaded exited\" title=\"img\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000021033997\" alt=\"img\" data-src=\"\/img\/remote\/1460000021033997\" data-ll-status=\"loaded\" \/><\/span><\/p>\n<p><span class=\"img-wrap\"><img decoding=\"async\" class=\"lazy entered loaded exited\" title=\"img\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000021034001\" alt=\"img\" data-src=\"\/img\/remote\/1460000021034001\" data-ll-status=\"loaded\" \/><\/span><\/p>\n<p><span class=\"img-wrap\"><img decoding=\"async\" class=\"lazy entered loaded exited\" title=\"img\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000021034003\" alt=\"img\" data-src=\"\/img\/remote\/1460000021034003\" data-ll-status=\"loaded\" \/><\/span><\/p>\n<p><span class=\"img-wrap\"><img decoding=\"async\" class=\"lazy entered loaded exited\" title=\"img\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000021034005\" alt=\"img\" data-src=\"\/img\/remote\/1460000021034005\" data-ll-status=\"loaded\" \/><\/span><\/p>\n<h3 id=\"item-4\">\u5982\u4f55\u9009\u4e3eLeader\u8282\u70b9<\/h3>\n<p>\u5047\u8bbe\u96c6\u7fa4\u4e2d\u6709\u4e09\u4e2a\u8282\u70b9\uff0c\u96c6\u7fa4\u542f\u52a8\u4e4b\u521d\u8282\u70b9\u4e2d\u5e76\u6ca1\u6709\u88ab\u9009\u4e3e\u51fa\u7684Leader\u3002<\/p>\n<p><span class=\"img-wrap\"><img decoding=\"async\" class=\"lazy entered loaded exited\" title=\"img\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000021034002\" alt=\"img\" data-src=\"\/img\/remote\/1460000021034002\" data-ll-status=\"loaded\" \/><\/span><\/p>\n<p>Raft\u7b97\u6cd5\u4f7f\u7528\u968f\u673aTimer\u6765\u521d\u59cb\u5316Leader\u9009\u4e3e\u6d41\u7a0b\u3002\u6bd4\u5982\u8bf4\u5728\u4e0a\u9762\u4e09\u4e2a\u8282\u70b9\u4e0a\u90fd\u8fd0\u884c\u4e86Timer\uff08\u6bcf\u4e2aTimer\u7684\u6301\u7eed\u65f6\u95f4\u662f\u968f\u673a\u7684\uff09\uff0c\u7b2c\u4e00\u4e2a\u8282\u70b9\u7387\u5148\u5b8c\u6210\u4e86Timer\uff0c\u968f\u540e\u5b83\u5c31\u4f1a\u5411\u5176\u4ed6\u4e24\u4e2a\u8282\u70b9\u53d1\u9001\u6210\u4e3aLeader\u7684\u8bf7\u6c42\uff0c\u5176\u4ed6\u8282\u70b9\u63a5\u6536\u5230\u8bf7\u6c42\u540e\u4f1a\u4ee5\u6295\u7968\u56de\u5e94\u7136\u540e\u7b2c\u4e00\u4e2a\u8282\u70b9\u88ab\u9009\u4e3e\u4e3aLeader\u3002<\/p>\n<p><span class=\"img-wrap\"><img decoding=\"async\" class=\"lazy entered loaded exited\" title=\"img\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000021033999\" alt=\"img\" data-src=\"\/img\/remote\/1460000021033999\" data-ll-status=\"loaded\" \/><\/span><\/p>\n<p>\u6210\u4e3aLeader\u540e\uff0c\u8be5\u8282\u70b9\u4f1a\u4ee5\u56fa\u5b9a\u65f6\u95f4\u95f4\u9694\u5411\u5176\u4ed6\u8282\u70b9\u53d1\u9001\u901a\u77e5\uff0c\u786e\u4fdd\u81ea\u5df1\u4ecd\u662fLeader\u3002\u6709\u4e9b\u60c5\u51b5\u4e0b\u5f53Follower\u4eec\u6536\u4e0d\u5230Leader\u7684\u901a\u77e5\u540e\uff0c\u6bd4\u5982\u8bf4Leader\u8282\u70b9\u5b95\u673a\u6216\u8005\u5931\u53bb\u4e86\u8fde\u63a5\uff0c\u5176\u4ed6\u8282\u70b9\u4f1a\u91cd\u590d\u4e4b\u524d\u9009\u4e3e\u8fc7\u7a0b\u9009\u4e3e\u51fa\u65b0\u7684Leader\u3002<\/p>\n<p><span class=\"img-wrap\"><img decoding=\"async\" class=\"lazy entered loaded exited\" title=\"img\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000021034000\" alt=\"img\" data-src=\"\/img\/remote\/1460000021034000\" data-ll-status=\"loaded\" \/><\/span><\/p>\n<h3 id=\"item-5\">\u5224\u65ad\u5199\u5165\u662f\u5426\u6210\u529f<\/h3>\n<p>etcd\u8ba4\u4e3a\u5199\u5165\u8bf7\u6c42\u88abLeader\u8282\u70b9\u5904\u7406\u5e76\u5206\u53d1\u7ed9\u4e86\u591a\u6570\u8282\u70b9\u540e\uff0c\u5c31\u662f\u4e00\u4e2a\u6210\u529f\u7684\u5199\u5165\u3002\u5982\u4f55\u754c\u5b9a\u591a\u6570\u8282\u70b9\u5462\uff1f\u5f88\u7b80\u5355\uff0c\u5047\u8bbe\u603b\u7ed3\u70b9\u6570\u662fN\uff0c\u90a3\u4e48\u591a\u6570\u8282\u70b9\u00a0<code>Majority=N\/2+1<\/code>\uff0c\u4e0d\u8fc7\u5728etcd\u4e2d\u4f7f\u7528\u7684\u672f\u8bed\u662f\u00a0<code>Quorum<\/code>\u800c\u4e0d\u662f\u00a0<code>Majority<\/code>\u3002\u6240\u4ee5\u754c\u5b9a\u591a\u6570\u8282\u70b9\u7684\u516c\u5f0f\u662f\u00a0<code>Quorum=N\/2+1<\/code>\u3002<\/p>\n<h3 id=\"item-6\">\u5173\u4e8e\u8282\u70b9\u6570\u7684\u6700\u4f73\u5b9e\u8df5<\/h3>\n<p><span class=\"img-wrap\"><img decoding=\"async\" class=\"lazy entered loaded exited\" title=\"img\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000021034004\" alt=\"img\" data-src=\"\/img\/remote\/1460000021034004\" data-ll-status=\"loaded\" \/><\/span><\/p>\n<p>\u5173\u4e8e\u5982\u4f55\u786e\u5b9aetcd\u96c6\u7fa4\u5e94\u8be5\u6709\u591a\u5c11\u4e2a\u8282\u70b9\u7684\u95ee\u9898\uff0c\u4e0a\u56fe\u7684\u5de6\u4fa7\u7684\u56fe\u8868\u7ed9\u51fa\u4e86\u96c6\u7fa4\u4e2d\u8282\u70b9\u603b\u6570(Instances)\u5bf9\u5e94\u7684Quorum\u6570\u91cf\uff0c\u7528Instances\u51cf\u53bbQuorom\u5c31\u662f\u96c6\u7fa4\u4e2d\u5bb9\u9519\u8282\u70b9\uff08\u5141\u8bb8\u51fa\u6545\u969c\u7684\u8282\u70b9\uff09\u7684\u6570\u91cf\u3002<\/p>\n<p>\u6240\u4ee5\u5728\u96c6\u7fa4\u4e2d\u63a8\u8350\u7684\u6700\u5c11\u8282\u70b9\u6570\u91cf\u662f3\u4e2a\uff0c\u56e0\u4e3a1\u548c2\u4e2a\u8282\u70b9\u7684\u5bb9\u9519\u8282\u70b9\u6570\u90fd\u662f0\uff0c\u4e00\u65e6\u6709\u4e00\u4e2a\u8282\u70b9\u5b95\u6389\u6574\u4e2a\u96c6\u7fa4\u5c31\u4e0d\u80fd\u6b63\u5e38\u5de5\u4f5c\u4e86\u3002<\/p>\n<p>\u5f53\u51b3\u5b9a\u96c6\u7fa4\u4e2d\u8282\u70b9\u7684\u6570\u91cf\u65f6\uff0c\u5f3a\u70c8\u63a8\u8350\u5947\u6570\u6570\u91cf\u7684\u8282\u70b9\uff0c\u6bd4\u5982\u4e0b\u56fe\u8868\u4e2d\u9ad8\u4eae\u7684\u90a3\u51e0\u4e2a\u9009\u9879\u3002<\/p>\n<p><span class=\"img-wrap\"><img decoding=\"async\" class=\"lazy entered loaded exited\" title=\"img\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000021034006\" alt=\"img\" data-src=\"\/img\/remote\/1460000021034006\" data-ll-status=\"loaded\" \/><\/span><\/p>\n<p>\u5177\u4f53\u6765\u8bf4\uff0c6\u4e2a\u8282\u70b9\u7684\u96c6\u7fa4\u5b83\u7684\u5bb9\u9519\u80fd\u529b\u5e76\u6ca1\u6709\u6bd45\u4e2a\u8282\u70b9\u7684\u597d\uff0c\u4ed6\u4eec\u7684\u5bb9\u9519\u8282\u70b9\u6570\u4e00\u6837\uff0c\u4e00\u65e6\u5bb9\u9519\u8282\u70b9\u8d85\u8fc72\u540e\uff0c\u7531\u4e8eQuorum\u8282\u70b9\u6570\u5c0f\u4e8e4\u6574\u4e2a\u96c6\u7fa4\u4e5f\u53d8\u4e3a\u4e0d\u53ef\u7528\u7684\u72b6\u6001\u4e86\u3002<\/p>\n<p><span class=\"img-wrap\"><img decoding=\"async\" class=\"lazy entered loaded exited\" title=\"img\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000021034007\" alt=\"img\" data-src=\"\/img\/remote\/1460000021034007\" data-ll-status=\"loaded\" \/><\/span><\/p>\n<p>\u6240\u4ee5\u5728\u51b3\u5b9a\u96c6\u7fa4\u4e2d\u7684\u8282\u70b9\u6570\u65f6\uff0c\u5947\u6570\u8981\u4f18\u4e8e\u5076\u6570\u3002<\/p>\n<p>\u7531\u4e8eetcd\u4e4b\u524d\u63a5\u89e6\u7684\u4e0d\u591a\u7f51\u4e0a\u6210\u4f53\u7cfb\u8d44\u6599\u4e5f\u6bd4\u8f83\u5c11\u4e00\u5f00\u59cb\u7406\u89e3\u8d77\u6765\u6709\u4e9b\u56f0\u96be\uff0c\u6700\u8fd1\u770b\u4e86\u4e0d\u5c11\u6587\u7ae0\u540c\u65f6\u5076\u7136\u5728Youtube\u4e0a\u53d1\u73b0\u4e86\u4e00\u4e2a\u4ecb\u7ecdetcd\u5165\u95e8\u7684\u89c6\u9891\uff0c\u89c9\u5f97\u5f88\u597d\u3002\u6587\u4e2d\u7684\u56fe\u7247\u5927\u90e8\u5206\u90fd\u662f\u6765\u81ea\u89c6\u9891\u7684\u622a\u56fe\uff0c\u63a8\u8350\u80fd\u8bbf\u95ee\u6cb9\u7ba1\u7684\u540c\u5b66\u90fd\u53bb\u770b\u770b\uff0c\u6bd4\u770b\u6211\u8fd9\u91cc\u7684\u6587\u7ae0\u66f4\u6613\u61c2\u3002\u5982\u679c\u82f1\u8bed\u542c\u529b\u4e0d\u592a\u597d\u7684\u540c\u5b66\u53ef\u4ee5\u5148\u770b\u770b\u6211\u7684\u6587\u7ae0\u518d\u53bb\u6cb9\u7ba1\u4e0a\u770b\u89c6\u9891\u3002<\/p>\n<p>\u89c6\u9891\u94fe\u63a5\u00a0<a href=\"https:\/\/www.youtube.com\/watch?v=L9xkXzpEY6Q\" target=\"_blank\" rel=\"noopener\">https:\/\/www.youtube.com\/watch&#8230;<\/a><\/p>\n<hr \/>\n<p><span class=\"img-wrap\"><img decoding=\"async\" class=\"lazy entered loaded\" title=\"WX20191117-152623@2x.png\" src=\"https:\/\/segmentfault.com\/img\/bVbAp3w\" alt=\"WX20191117-152623@2x.png\" data-src=\"https:\/\/segmentfault.com\/img\/bVbAp3w\" data-ll-status=\"loaded\" \/><\/span><\/p>\n<\/article>\n<div class=\"d-flex flex-wrap align-items-center \">\n<div class=\"m-n1\"><a class=\"m-1 badge-tag\" href=\"https:\/\/segmentfault.com\/t\/etcd\">etcd<\/a><a class=\"m-1 badge-tag\" href=\"https:\/\/segmentfault.com\/t\/%E5%88%86%E5%B8%83%E5%BC%8F\">\u5206\u5e03\u5f0f<\/a><a class=\"m-1 badge-tag\" href=\"https:\/\/segmentfault.com\/t\/%E5%88%86%E5%B8%83%E5%BC%8F%E7%B3%BB%E7%BB%9F\">\u5206\u5e03\u5f0f\u7cfb\u7edf<\/a><\/div>\n<\/div>\n<div class=\"my-4\">\n<div id=\"OA_holder_3\" class=\"ad-container\"><\/div>\n<\/div>\n<div class=\"text-secondary font-size-14 mt-3 mb-5 d-flex justify-content-between row\">\n<div class=\"col\">\u9605\u8bfb\u00a04.7k<time datetime=\"2019-10-20T02:26:58.000Z\">\u66f4\u65b0\u4e8e\u00a02019-11-17<\/time><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u539f\u6587\u5730\u5740 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