{"id":105,"date":"2024-03-02T21:22:02","date_gmt":"2024-03-02T13:22:02","guid":{"rendered":"http:\/\/mashuai.me\/?p=105"},"modified":"2024-03-02T21:22:02","modified_gmt":"2024-03-02T13:22:02","slug":"hadoop%e5%88%86%e5%b8%83%e5%bc%8f%e9%9b%86%e7%be%a4%e9%83%a8%e7%bd%b2%e6%8e%92%e9%94%99%ef%bc%9a-failed-on-connection-exception-java-net-connectexception-%e6%8b%92%e7%bb%9d%e8%bf%9e%e6%8e%a5","status":"publish","type":"post","link":"https:\/\/mashuai.me\/?p=105","title":{"rendered":"Hadoop\u5206\u5e03\u5f0f\u96c6\u7fa4\u90e8\u7f72\u6392\u9519\uff1a failed on connection exception: java.net.ConnectException: \u62d2\u7edd\u8fde\u63a5"},"content":{"rendered":"\n

\u90e8\u7f72hadoop\u5206\u5e03\u5f0f\u96c6\u7fa4\u73af\u5883\u65f6\u51fa\u73b0\u4e24\u4e2adatanode\u8282\u70b9\u65e0\u6cd5\u6ce8\u518c\u5230namenode\u7684\u73b0\u8c61\uff0cjps\u770bdatanode\u51e0\u4e2a\u8282\u70b9\u542f\u52a8\u6b63\u5e38\u3002\u53ea\u6709\u548cnamenode\u76f8\u540c\u670d\u52a1\u5668\u7684datanode\u6ce8\u518c\u6210\u529f\u3002<\/p>\n\n\n\n

\u5728\u4e3b\u8282\u70b9\u6267\u884c\uff1ahdfs dfsadmin -report \uff0c\u663e\u793aLive Datanodes (1)<\/p>\n\n\n\n

\u5728\u5176\u5b83datanode\u8282\u70b9\u6267\u884chdfs dfsadmin -report\uff0c\u663e\u793a\u5982\u4e0b<\/p>\n\n\n\n

report: Call From server01\/127.0.0.1 to server01:8020 failed on connection exception: java.net.ConnectException: \u62d2\u7edd\u8fde\u63a5; For more details see: http:\/\/wiki.apache.org\/hadoop\/ConnectionRefused<\/p>\n\n\n\n

\u67e5\u770bdatanode\u7684\u65e5\u5fd7\u4e2d\u51fa\u73b0<\/p>\n\n\n\n

WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Block pool ID needed, but service not yet registered with NN\u3002<\/p>\n\n\n\n

netstat \u67e5\u770bnamenode\u76848082\u7aef\u53e3\u5904\u4e8e\u76d1\u542c\u72b6\u6001\u3002<\/p>\n\n\n\n

\u7f51\u4e0a\u627e\u5230\u7684\u5404\u79cd\u6587\u7ae0\u8bf4\u7684\u53ef\u80fd\u6027\u5168\u90e8\u6392\u9664\uff0c\u4ecd\u7136\u4e0d\u80fd\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002\u7ecf\u8fc7\u6240\u6709\u914d\u7f6e\u6587\u4ef6\u91cd\u65b0\u68c0\u67e5N\u6b21\u4ee5\u540e\uff0c\u67e5\u770bnamenode\u65e5\u5fd7\uff0c\u6700\u540e\u6ce8\u610f\u5230\u4e86\u8fd9\u4e2a\u201cserver01\/127.0.0.1 \u201d\u53cd\u590d\u51fa\u73b0\u3002 \u4e3a\u4ec0\u4e48\u4e0d\u662f\u771fIP\u800c\u662f\u672c\u5730\u56de\u73af\u5730\u5740\u5462\uff1f \u67e5\u770b\/etc\/hosts\u6587\u4ef6\uff0c\u53d1\u73b0\u5bf9\u5e94server01\u7684IP\u5730\u5740\u914d\u7f6e\u6709\u4e24\u90e8\u5206\uff0c\u4e00\u90e8\u5206\u662f<\/p>\n\n\n\n

127.0.0.1 localhost<\/p>\n\n\n\n

127.0.0.1 server01<\/p>\n\n\n\n

\u53e6\u5916\u4e0b\u9762\u8fd8\u6709<\/p>\n\n\n\n

192.168.227.101 server01<\/p>\n\n\n\n

192.168.227.102 server02<\/p>\n\n\n\n

192.168.227.103 server03<\/p>\n\n\n\n

\u5728\u4e00\u4e2a\u4e3b\u673a\u540d\u6709\u4e24\u4e2a\u5730\u5740\u7684\u60c5\u51b5\u4e0b\uff0c\u9ed8\u8ba4\u7684\u662f127\u7684IP\uff0c\u5bfc\u81f48020\u7aef\u53e3\u76d1\u542c\u7684\u662f127.0.0.1\uff0c\u5220\u9664\u8fd9\u4e00\u6761\u914d\u7f6e\u540e\uff0c\u91cd\u542f\u542f\u52a8start-all.sh, \u5947\u8ff9\u51fa\u73b0\u4e86\uff0c8020\u7aef\u53e3\u76d1\u542c\u7684\u662f\u771fIP\u4e86\uff0c\u95ee\u9898\u89e3\u51b3~<\/p>\n

\u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff1a\u5f00\u53d1\u8005\u9a7f\u7ad9<\/a> » Hadoop\u5206\u5e03\u5f0f\u96c6\u7fa4\u90e8\u7f72\u6392\u9519\uff1a failed on connection exception: java.net.ConnectException: \u62d2\u7edd\u8fde\u63a5<\/a><\/p>","protected":false},"excerpt":{"rendered":"