{"id":158769,"date":"2024-11-03T04:39:47","date_gmt":"2024-11-02T20:39:47","guid":{"rendered":"https:\/\/server.hk\/cnblog\/158769\/"},"modified":"2024-11-03T04:39:47","modified_gmt":"2024-11-02T20:39:47","slug":"%e9%97%9c%e6%96%bchadoop%e6%8a%80%e8%a1%93%e7%9a%84ha%e6%a9%9f%e5%88%b6%e5%ad%b8%e7%bf%92","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/158769\/","title":{"rendered":"\u95dc\u65bcHadoop\u6280\u8853\u7684HA\u6a5f\u5236\u5b78\u7fd2"},"content":{"rendered":"<h1 id=\"%e9%97%9c%e6%96%bchadoop%e6%8a%80%e8%a1%93%e7%9a%84ha%e6%a9%9f%e5%88%b6%e5%ad%b8%e7%bf%92-JrIQaKFoYK\">\u95dc\u65bcHadoop\u6280\u8853\u7684HA\u6a5f\u5236\u5b78\u7fd2<\/h1>\n<p>\u5728\u7576\u4eca\u5927\u6578\u64da\u6642\u4ee3\uff0cHadoop\u4f5c\u70ba\u4e00\u500b\u958b\u6e90\u7684\u5206\u4f48\u5f0f\u8a08\u7b97\u6846\u67b6\uff0c\u5df2\u7d93\u6210\u70ba\u6578\u64da\u8655\u7406\u548c\u5b58\u5132\u7684\u4e3b\u6d41\u6280\u8853\u4e4b\u4e00\u3002Hadoop\u7684\u9ad8\u53ef\u7528\u6027\uff08High Availability, HA\uff09\u6a5f\u5236\u662f\u78ba\u4fdd\u7cfb\u7d71\u7a69\u5b9a\u904b\u884c\u7684\u91cd\u8981\u7d44\u6210\u90e8\u5206\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eHadoop\u7684HA\u6a5f\u5236\uff0c\u5e6b\u52a9\u8b80\u8005\u7406\u89e3\u5176\u5de5\u4f5c\u539f\u7406\u53ca\u5be6\u73fe\u65b9\u5f0f\u3002<\/p>\n<h2 id=\"hadoop%e6%9e%b6%e6%a7%8b%e6%a6%82%e8%bf%b0-JrIQaKFoYK\">Hadoop\u67b6\u69cb\u6982\u8ff0<\/h2>\n<p>Hadoop\u7684\u67b6\u69cb\u4e3b\u8981\u7531\u5169\u500b\u6838\u5fc3\u7d44\u4ef6\u7d44\u6210\uff1aHadoop\u5206\u4f48\u5f0f\u6587\u4ef6\u7cfb\u7d71\uff08HDFS\uff09\u548cHadoop MapReduce\u3002HDFS\u8ca0\u8cac\u6578\u64da\u7684\u5b58\u5132\uff0c\u800cMapReduce\u5247\u8ca0\u8cac\u6578\u64da\u7684\u8655\u7406\u3002\u9019\u5169\u500b\u7d44\u4ef6\u7684\u5354\u540c\u5de5\u4f5c\u4f7f\u5f97Hadoop\u80fd\u5920\u8655\u7406\u5927\u898f\u6a21\u6578\u64da\u96c6\u3002<\/p>\n<h2 id=\"%e9%ab%98%e5%8f%af%e7%94%a8%e6%80%a7%e7%9a%84%e9%87%8d%e8%a6%81%e6%80%a7-JrIQaKFoYK\">\u9ad8\u53ef\u7528\u6027\u7684\u91cd\u8981\u6027<\/h2>\n<p>\u5728\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u55ae\u9ede\u6545\u969c\uff08Single Point of Failure, SPOF\uff09\u662f\u5f71\u97ff\u7cfb\u7d71\u7a69\u5b9a\u6027\u548c\u53ef\u7528\u6027\u7684\u4e3b\u8981\u56e0\u7d20\u3002Hadoop\u7684HA\u6a5f\u5236\u65e8\u5728\u6d88\u9664\u9019\u4e9b\u55ae\u9ede\u6545\u969c\uff0c\u78ba\u4fdd\u7cfb\u7d71\u5728\u67d0\u4e9b\u7d44\u4ef6\u5931\u6548\u6642\u4ecd\u80fd\u6b63\u5e38\u904b\u884c\u3002\u9019\u5c0d\u65bc\u9700\u898124\/7\u904b\u884c\u7684\u5546\u696d\u61c9\u7528\u5c24\u70ba\u91cd\u8981\u3002<\/p>\n<h2 id=\"hadoop%e7%9a%84ha%e6%a9%9f%e5%88%b6-JrIQaKFoYK\">Hadoop\u7684HA\u6a5f\u5236<\/h2>\n<p>Hadoop\u7684HA\u6a5f\u5236\u4e3b\u8981\u901a\u904e\u4ee5\u4e0b\u5e7e\u500b\u65b9\u9762\u4f86\u5be6\u73fe\uff1a<\/p>\n<ul>\n<li><strong>\u4e3b\u5f9e\u67b6\u69cb\uff1a<\/strong>Hadoop\u7684HA\u6a5f\u5236\u901a\u5e38\u4f7f\u7528\u4e3b\u5f9e\u67b6\u69cb\uff0c\u5176\u4e2d\u4e00\u500b\u4e3b\u7bc0\u9ede\uff08Active NameNode\uff09\u8ca0\u8cac\u8655\u7406\u8acb\u6c42\uff0c\u800c\u5176\u4ed6\u7bc0\u9ede\uff08Standby NameNode\uff09\u5247\u8655\u65bc\u5f85\u547d\u72c0\u614b\u3002<\/li>\n<li><strong>ZooKeeper\uff1a<\/strong>Hadoop\u4f7f\u7528Apache ZooKeeper\u4f86\u5354\u8abf\u4e3b\u5f9e\u7bc0\u9ede\u4e4b\u9593\u7684\u72c0\u614b\u3002ZooKeeper\u80fd\u5920\u76e3\u63a7\u4e3b\u7bc0\u9ede\u7684\u5065\u5eb7\u72c0\u6cc1\uff0c\u4e26\u5728\u4e3b\u7bc0\u9ede\u5931\u6548\u6642\u81ea\u52d5\u5207\u63db\u5230\u5099\u7528\u7bc0\u9ede\u3002<\/li>\n<li><strong>\u5171\u4eab\u5b58\u5132\uff1a<\/strong>\u70ba\u4e86\u5be6\u73feHA\uff0cHadoop\u8981\u6c42\u6240\u6709\u7684NameNode\u90fd\u80fd\u8a2a\u554f\u5171\u4eab\u5b58\u5132\u7cfb\u7d71\uff0c\u9019\u6a23\u5728\u4e3b\u7bc0\u9ede\u6545\u969c\u6642\uff0c\u5099\u7528\u7bc0\u9ede\u53ef\u4ee5\u8fc5\u901f\u63a5\u7ba1\u5176\u4efb\u52d9\u3002<\/li>\n<\/ul>\n<h3 id=\"%e9%85%8d%e7%bd%aehadoop-ha-JrIQaKFoYK\">\u914d\u7f6eHadoop HA<\/h3>\n<p>\u914d\u7f6eHadoop\u7684HA\u6a5f\u5236\u9700\u8981\u9032\u884c\u4ee5\u4e0b\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li>\u5b89\u88dd\u548c\u914d\u7f6eZooKeeper\u96c6\u7fa4\u3002<\/li>\n<li>\u914d\u7f6eHDFS\u7684\u9ad8\u53ef\u7528\u6027\uff0c\u4fee\u6539<code>hdfs-site.xml<\/code>\u6587\u4ef6\uff0c\u8a2d\u7f6e\u4e3b\u5f9eNameNode\u7684\u76f8\u95dc\u53c3\u6578\u3002<\/li>\n<li>\u8a2d\u7f6e\u5171\u4eab\u5b58\u5132\uff0c\u78ba\u4fdd\u6240\u6709NameNode\u90fd\u80fd\u8a2a\u554f\u3002<\/li>\n<li>\u555f\u52d5Hadoop\u96c6\u7fa4\uff0c\u4e26\u6aa2\u67e5HA\u72c0\u614b\u3002<\/li>\n<\/ol>\n<h4 id=\"%e7%a4%ba%e4%be%8b%e9%85%8d%e7%bd%ae-JrIQaKFoYK\">\u793a\u4f8b\u914d\u7f6e<\/h4>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684<code>hdfs-site.xml<\/code>\u914d\u7f6e\u793a\u4f8b\uff1a<\/p>\n<pre><code>\n&lt;configuration&gt;\n    &lt;property&gt;\n        &lt;name&gt;dfs.nameservices&lt;\/name&gt;\n        &lt;value&gt;mycluster&lt;\/value&gt;\n    &lt;\/property&gt;\n    &lt;property&gt;\n        &lt;name&gt;dfs.ha.namenodes.mycluster&lt;\/name&gt;\n        &lt;value&gt;nn1,nn2&lt;\/value&gt;\n    &lt;\/property&gt;\n    &lt;property&gt;\n        &lt;name&gt;dfs.namenode.rpc-address.mycluster.nn1&lt;\/name&gt;\n        &lt;value&gt;192.168.1.1:8020&lt;\/value&gt;\n    &lt;\/property&gt;\n    &lt;property&gt;\n        &lt;name&gt;dfs.namenode.rpc-address.mycluster.nn2&lt;\/name&gt;\n        &lt;value&gt;192.168.1.2:8020&lt;\/value&gt;\n    &lt;\/property&gt;\n    &lt;property&gt;\n        &lt;name&gt;dfs.client.failover.max.attempts&lt;\/name&gt;\n        &lt;value&gt;5&lt;\/value&gt;\n    &lt;\/property&gt;\n&lt;\/configuration&gt;\n<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-JrIQaKFoYK\">\u7d50\u8ad6<\/h2>\n<p>Hadoop\u7684\u9ad8\u53ef\u7528\u6027\u6a5f\u5236\u662f\u78ba\u4fdd\u6578\u64da\u8655\u7406\u7cfb\u7d71\u7a69\u5b9a\u904b\u884c\u7684\u95dc\u9375\u3002\u901a\u904e\u4e3b\u5f9e\u67b6\u69cb\u3001ZooKeeper\u5354\u8abf\u548c\u5171\u4eab\u5b58\u5132\u7684\u914d\u7f6e\uff0cHadoop\u80fd\u5920\u6709\u6548\u5730\u61c9\u5c0d\u55ae\u9ede\u6545\u969c\uff0c\u4fdd\u8b49\u7cfb\u7d71\u7684\u6301\u7e8c\u53ef\u7528\u6027\u3002\u96a8\u8457\u5927\u6578\u64da\u6280\u8853\u7684\u767c\u5c55\uff0c\u7406\u89e3\u548c\u638c\u63e1Hadoop\u7684HA\u6a5f\u5236\u5c07\u5c0d\u65bc\u6578\u64da\u5de5\u7a0b\u5e2b\u548c\u7cfb\u7d71\u7ba1\u7406\u54e1\u4f86\u8aaa\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc<code>VPS<\/code>\u3001<code>\u9999\u6e2fVPS<\/code>\u6216\u5176\u4ed6<code>\u4e91\u670d\u52a1\u5668<\/code>\u7684\u9700\u6c42\u611f\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\uff1a<a href=\"https:\/\/server.hk\">Server.HK<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u4e86\u89e3Hadoop\u6280\u8853\u4e2d\u7684\u9ad8\u53ef\u7528\u6027(HA)\u6a5f\u5236\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u7684\u7a69\u5b9a\u6027\u8207\u53ef\u9760\u6027\uff0c\u78ba\u4fdd\u7cfb\u7d71\u6301\u7e8c\u904b\u884c\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-158769","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158769","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=158769"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158769\/revisions"}],"predecessor-version":[{"id":158770,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158769\/revisions\/158770"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=158769"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=158769"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=158769"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}