{"id":77604,"date":"2026-02-25T00:06:18","date_gmt":"2026-02-24T16:06:18","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/77604.html"},"modified":"2026-02-25T00:06:18","modified_gmt":"2026-02-24T16:06:18","slug":"hadoop%e9%9b%86%e7%be%a4%e6%90%ad%e5%bb%ba%e8%b8%a9%e5%9d%91%e5%85%a8%e8%ae%b0%e5%bd%95","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/77604.html","title":{"rendered":"Hadoop\u96c6\u7fa4\u642d\u5efa\u8e29\u5751\u5168\u8bb0\u5f55"},"content":{"rendered":"

<\/h2>\n

\u6700\u8fd1\u5728\u5b66\u4e60\u5927\u6570\u636e\u6280\u672f，\u7b2c\u4e00\u4e2a\u62e6\u8def\u864e\u5c31\u662f\u642d\u5efaHadoop\u96c6\u7fa4\u3002\u8bf4\u5b9e\u8bdd，\u521a\u5f00\u59cb\u6211\u89c9\u5f97\u8fd9\u6709\u4ec0\u4e48\u96be\u7684，\u8ddf\u7740\u6559\u7a0b\u4e00\u6b65\u6b65\u6572\u547d\u4ee4\u4e0d\u5c31\u5b8c\u4e86？\u7ed3\u679c\u8fd9\u4e00\u6572\u5c31\u662f\u6574\u6574\u4e00\u5929，\u8e29\u4e86\u65e0\u6570\u5751，\u4ece\u201cPermission denied\u201d\u5230\u201cConnection refused\u201d，\u4ece\u201cJAVA_HOME not set\u201d\u5230\u201cNameNode format\u5931\u8d25\u201d，\u7b80\u76f4\u662f\u628a\u6240\u6709\u80fd\u8e29\u7684\u5751\u90fd\u8e29\u4e86\u4e00\u904d\u3002<\/p>\n

\u4f46\u56de\u8fc7\u5934\u6765\u770b，\u8fd9\u4e9b\u5751\u53cd\u800c\u662f\u6700\u5b9d\u8d35\u7684\u7ecf\u9a8c\u3002\u4eca\u5929\u5c31\u628a\u6211\u8fd9\u4e00\u5929\u7684\u5fc3\u8def\u5386\u7a0b\u8bb0\u5f55\u4e0b\u6765，\u5e0c\u671b\u80fd\u5e2e\u52a9\u540c\u6837\u5728\u5b66\u4e60Hadoop\u7684\u670b\u53cb\u4eec\u5c11\u8d70\u5f2f\u8def\u3002<\/p>\n

\n

\u95ee\u9898\u4e00：\u6743\u9650\u95ee\u9898，\u6c38\u8fdc\u7684Permission denied<\/h3>\n

\u9047\u5230\u7684\u60c5\u51b5<\/h4>\n

\u6211\u6309\u7167\u6559\u7a0b，\u7528hadoop\u7528\u6237\u6267\u884c\u547d\u4ee4：<\/p>\n

bash<\/p>\n

hadoop fs -mkdir -p \/input<\/p>\n

\u7ed3\u679c\u7ed9\u6211\u8fd4\u56de：<\/p>\n

text<\/p>\n

mkdir: Permission denied: user=hadoop, access=WRITE, inode="\/":root:supergroup:drwxr-xr-x<\/p>\n

\u5f53\u65f6\u6211\u5c31\u61f5\u4e86，\u660e\u660e\u662f\u6309\u7167\u6559\u7a0b\u4e00\u6b65\u6b65\u6765\u7684，\u600e\u4e48\u5c31\u6ca1\u6743\u9650\u4e86\u5462？<\/p>\n

\u95ee\u9898\u5206\u6790<\/h4>\n

\u8fd9\u4e2a\u95ee\u9898\u66b4\u9732\u4e86\u6211\u5bf9Linux\u6743\u9650\u673a\u5236\u7406\u89e3\u7684\u4e0d\u8db3\u3002HDFS\u867d\u7136\u662f\u4e00\u4e2a\u5206\u5e03\u5f0f\u6587\u4ef6\u7cfb\u7edf，\u4f46\u5b83\u4f9d\u7136\u9075\u5faaLinux\u7684\u6743\u9650\u6a21\u578b\u3002\u6839\u76ee\u5f55\/\u662froot\u7528\u6237\u7684，\u666e\u901a\u7528\u6237hadoop\u5f53\u7136\u6ca1\u6709\u5199\u5165\u6743\u9650\u3002<\/p>\n

\u66f4\u6df1\u4e00\u5c42\u60f3，\u8fd9\u8bf4\u660e\u6211\u5bf9HDFS\u7684\u76ee\u5f55\u7ed3\u6784\u7406\u89e3\u4e0d\u591f\u3002HDFS\u6709\u81ea\u5df1\u7684\u7528\u6237\u76ee\u5f55\u4f53\u7cfb，\u5c31\u50cfLinux\u7684\/home\u4e00\u6837，\u666e\u901a\u7528\u6237\u5e94\u8be5\u5728\/user\u76ee\u5f55\u4e0b\u6709\u81ea\u5df1\u7684\u7a7a\u95f4\u3002<\/p>\n

\u89e3\u51b3\u8fc7\u7a0b<\/h4>\n

\u521a\u5f00\u59cb\u6211\u7684\u89e3\u51b3\u601d\u8def\u5f88\u7c97\u66b4：\u628a\u6839\u76ee\u5f55\u6743\u9650\u6539\u6210777：<\/p>\n

bash<\/p>\n

hdfs dfs -chmod 777 \/<\/p>\n

\u4f46\u4ed4\u7ec6\u4e00\u60f3，\u8fd9\u592a\u5371\u9669\u4e86，\u800c\u4e14\u6cbb\u6807\u4e0d\u6cbb\u672c\u3002\u6b63\u786e\u7684\u505a\u6cd5\u662f：<\/p>\n

  • \n

    \u521b\u5efa\u7528\u6237\u76ee\u5f55<\/p>\n<\/li>\n

  • \n

    \u628a\u7528\u6237\u76ee\u5f55\u7684owner\u6539\u6210hadoop\u7528\u6237<\/p>\n<\/li>\n

  • \n

    \u8ba9\u7528\u6237\u5728\u81ea\u5df1\u7684\u76ee\u5f55\u4e0b\u64cd\u4f5c<\/p>\n<\/li>\n

    bash<\/p>\n

    # root\u7528\u6237\u6267\u884c
    \nhdfs dfs -mkdir -p \/user\/hadoop
    \nhdfs dfs -chown -R hadoop:hadoop \/user\/hadoop
    \nhdfs dfs -chmod 755 \/user\/hadoop<\/p>\n

    # \u7136\u540ehadoop\u7528\u6237\u5c31\u53ef\u4ee5\u6109\u5feb\u5730\u64cd\u4f5c\u4e86
    \nhdfs dfs -mkdir -p \/user\/hadoop\/input
    \nhdfs dfs -put test.txt \/user\/hadoop\/input\/<\/p>\n

    \u5fc3\u5f97<\/h4>\n

    \u8fd9\u4ef6\u4e8b\u7ed9\u6211\u7684\u542f\u53d1\u5f88\u5927：\u4e0d\u8981\u7528root\u7528\u6237\u8dd1\u5e94\u7528，\u8fd9\u662f\u57fa\u672c\u7684\u5b89\u5168\u539f\u5219\u3002\u6bcf\u4e2a\u7528\u6237\u5e94\u8be5\u6709\u81ea\u5df1\u7684\u72ec\u7acb\u7a7a\u95f4，\u8fd9\u4e0d\u4ec5\u662f\u4e3a\u4e86\u5b89\u5168，\u4e5f\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u8d44\u6e90\u9694\u79bb\u3002<\/p>\n

    \u53e6\u5916，\u9047\u5230\u6743\u9650\u95ee\u9898\u7b2c\u4e00\u53cd\u5e94\u4e0d\u5e94\u8be5\u662f\u201c\u628a\u6743\u9650\u653e\u5927\u201d，\u800c\u662f\u8981\u601d\u8003\u201c\u5408\u7406\u7684\u6743\u9650\u5206\u914d\u5e94\u8be5\u662f\u600e\u6837\u7684\u201d\u3002\u8fd9\u4e0d\u4ec5\u662f\u6280\u672f\u95ee\u9898，\u66f4\u662f\u4e00\u79cd\u601d\u7ef4\u65b9\u5f0f\u3002<\/p>\n

    \n

    \u95ee\u9898\u4e8c：\u670d\u52a1\u542f\u52a8\u6210\u529f，\u4f46jps\u770b\u4e0d\u5230\u8fdb\u7a0b<\/h3>\n

    \u9047\u5230\u7684\u60c5\u51b5<\/h4>\n

    \u6267\u884c\u5b8c.\/start-dfs.sh\u548c.\/start-yarn.sh\u540e，\u770b\u5230\u4e00\u5806\u8f93\u51fa，\u611f\u89c9\u5e94\u8be5\u662f\u6210\u529f\u4e86\u3002\u7ed3\u679c\u4e00\u67e5：<\/p>\n

    bash<\/p>\n

    jps
    \n656 Jps<\/p>\n

    \u53ea\u6709\u4e00\u4e2aJps\u8fdb\u7a0b？\u5176\u4ed6\u8fdb\u7a0b\u5462？<\/p>\n

    \u95ee\u9898\u5206\u6790<\/h4>\n

    \u5f00\u59cb\u6211\u4ee5\u4e3a\u662f\u81ea\u5df1\u64cd\u4f5c\u9519\u4e86，\u53cd\u590d\u542f\u52a8\u505c\u6b62\u4e86\u597d\u51e0\u6b21\u3002\u76f4\u5230\u4ed4\u7ec6\u770b\u542f\u52a8\u65e5\u5fd7\u624d\u53d1\u73b0\u95ee\u9898：<\/p>\n

    text<\/p>\n

    hadoop1: \/app\/hadoop\/hadoop-2.6.4\/sbin\/hadoop-daemon.sh: line 159:
    \n\/app\/hadoop\/hadoop-2.6.4\/logs\/hadoop-hadoop-namenode-hadoop1.out: Permission denied<\/p>\n

    \u539f\u6765\u662f\u65e5\u5fd7\u76ee\u5f55\u7684\u6743\u9650\u95ee\u9898\u3002hadoop\u7528\u6237\u6ca1\u6709\u6743\u9650\u5199\u65e5\u5fd7\u6587\u4ef6，\u5bfc\u81f4\u8fdb\u7a0b\u542f\u52a8\u5931\u8d25\u3002<\/p>\n

    \u89e3\u51b3\u8fc7\u7a0b<\/h4>\n

    \u8fd9\u4e2a\u95ee\u9898\u8ba9\u6211\u610f\u8bc6\u5230，\u4e0d\u4ec5\u662f\u6570\u636e\u76ee\u5f55，\u65e5\u5fd7\u76ee\u5f55\u4e5f\u9700\u8981\u6b63\u786e\u7684\u6743\u9650\u3002<\/p>\n

    bash<\/p>\n

    # root\u7528\u6237\u6267\u884c
    \nchown -R hadoop:hadoop \/app\/hadoop\/hadoop-2.6.4\/logs
    \nchown -R hadoop:hadoop \/app\/hadoop\/hadoop-2.6.4<\/p>\n

    # \u8fd8\u8981\u540c\u6b65\u5230\u5176\u4ed6\u8282\u70b9
    \nssh hadoop2 "chown -R hadoop:hadoop \/app\/hadoop\/hadoop-2.6.4"
    \nssh hadoop3 "chown -R hadoop:hadoop \/app\/hadoop\/hadoop-2.6.4"<\/p>\n

    \u6539\u5b8c\u6743\u9650\u540e，\u518d\u542f\u52a8\u670d\u52a1，\u7ec8\u4e8e\u770b\u5230\u4e86\u5b8c\u6574\u7684\u8fdb\u7a0b\u5217\u8868：<\/p>\n

      \n
    • \n

      NameNode<\/p>\n<\/li>\n

    • \n

      DataNode<\/p>\n<\/li>\n

    • \n

      SecondaryNameNode<\/p>\n<\/li>\n

    • \n

      ResourceManager<\/p>\n<\/li>\n

    • \n

      NodeManager<\/p>\n<\/li>\n<\/ul>\n

      \u5fc3\u5f97<\/h4>\n

      \u8fd9\u4e2a\u95ee\u9898\u6559\u4f1a\u6211：\u9047\u5230\u95ee\u9898\u4e0d\u8981\u53ea\u770b\u8868\u8c61，\u8981\u6df1\u5165\u770b\u65e5\u5fd7\u3002\u542f\u52a8\u5931\u8d25\u7684\u539f\u56e0\u5f80\u5f80\u85cf\u5728\u65e5\u5fd7\u6587\u4ef6\u91cc\u3002<\/p>\n

      \u540c\u65f6，\u8fd9\u4e5f\u8ba9\u6211\u7406\u89e3\u4e86Hadoop\u7684\u670d\u52a1\u67b6\u6784：<\/p>\n

        \n
      • \n

        NameNode：\u7ba1\u7406\u6587\u4ef6\u7cfb\u7edf\u547d\u540d\u7a7a\u95f4<\/p>\n<\/li>\n

      • \n

        DataNode：\u5b58\u50a8\u5b9e\u9645\u6570\u636e<\/p>\n<\/li>\n

      • \n

        ResourceManager：\u7ba1\u7406\u8ba1\u7b97\u8d44\u6e90<\/p>\n<\/li>\n

      • \n

        NodeManager：\u7ba1\u7406\u5355\u4e2a\u8282\u70b9\u7684\u8ba1\u7b97\u4efb\u52a1<\/p>\n<\/li>\n<\/ul>\n

        \u6bcf\u4e00\u4e2a\u8fdb\u7a0b\u90fd\u6709\u660e\u786e\u7684\u804c\u8d23，\u8fd9\u6837\u7684\u8bbe\u8ba1\u8ba9\u7cfb\u7edf\u66f4\u52a0\u5065\u58ee\u3002<\/p>\n

        \n

        \u95ee\u9898\u4e09：JAVA_HOME<\/h3>\n

        \u9047\u5230\u7684\u60c5\u51b5<\/h4>\n

        \u8fd9\u4e2a\u95ee\u9898\u6700\u8be1\u5f02\u3002\u6211\u5728hadoop1\u4e0a\u914d\u7f6e\u4e86JAVA_HOME，\u542f\u52a8\u670d\u52a1\u4e5f\u6b63\u5e38\u3002\u4f46\u662f\u767b\u5f55hadoop2\u4e00\u67e5：<\/p>\n

        bash<\/p>\n

        ssh hadoop2 "echo \\\\$JAVA_HOME"
        \n# \u8fd4\u56de\u7a7a<\/p>\n

        \u5947\u602a\u4e86，\u660e\u660e\u6bcf\u53f0\u673a\u5668\u90fd\u914d\u7f6e\u4e86\u554a\u3002<\/p>\n

        \u95ee\u9898\u5206\u6790<\/h4>\n

        \u7ecf\u8fc7\u6392\u67e5，\u6211\u53d1\u73b0\u95ee\u9898\u51fa\u5728\u914d\u7f6e\u6587\u4ef6\u7684\u751f\u6548\u8303\u56f4\u4e0a\u3002\u6211\u662f\u5728\/etc\/profile\u91cc\u914d\u7f6e\u7684JAVA_HOME，\u4f46\u8fd9\u4e2a\u6587\u4ef6\u5728SSH\u975e\u767b\u5f55shell\u6a21\u5f0f\u4e0b\u4e0d\u4f1a\u751f\u6548\u3002<\/p>\n

        \u66f4\u5173\u952e\u7684\u662f，Hadoop\u6709\u81ea\u5df1\u7684\u914d\u7f6e\u6587\u4ef6hadoop-env.sh，\u8fd9\u4e2a\u6587\u4ef6\u91cc\u7684\u914d\u7f6e\u5bf9Hadoop\u670d\u52a1\u624d\u662f\u6700\u91cd\u8981\u7684\u3002<\/p>\n

        \u89e3\u51b3\u8fc7\u7a0b<\/h4>\n

        \u89e3\u51b3\u65b9\u6848\u662f\u5728\u6bcf\u4e2a\u8282\u70b9\u7684hadoop-env.sh\u91cc\u663e\u5f0f\u6307\u5b9aJAVA_HOME：<\/p>\n

        bash<\/p>\n

        # \u7f16\u8f91hadoop-env.sh
        \nexport JAVA_HOME=\/usr\/lib\/java\/jdk1.7.0_79<\/p>\n

        # \u540c\u6b65\u5230\u5176\u4ed6\u8282\u70b9
        \nscp hadoop-env.sh hadoop@hadoop2:\/app\/hadoop\/hadoop-2.6.4\/etc\/hadoop\/
        \nscp hadoop-env.sh hadoop@hadoop3:\/app\/hadoop\/hadoop-2.6.4\/etc\/hadoop\/<\/p>\n

        \u540c\u65f6，\u4e3a\u4e86\u65e5\u5e38\u4f7f\u7528\u7684\u4fbf\u5229\u6027，\u4e5f\u8981\u5728\u6bcf\u4e2a\u7528\u6237\u7684.bashrc\u91cc\u914d\u7f6eJAVA_HOME：<\/p>\n

        bash<\/p>\n

        echo "export JAVA_HOME=\/usr\/lib\/java\/jdk1.7.0_79" >> ~\/.bashrc
        \necho "export PATH=\\\\$PATH:\\\\$JAVA_HOME\/bin" >> ~\/.bashrc
        \nsource ~\/.bashrc<\/p>\n

        \u5fc3\u5f97<\/h4>\n

        \u8fd9\u4e2a\u95ee\u9898\u8ba9\u6211\u7406\u89e3\u4e86Linux\u4e2d\u73af\u5883\u53d8\u91cf\u7684\u4f5c\u7528\u57df：<\/p>\n

          \n
        • \n

          \/etc\/profile：\u7cfb\u7edf\u7ea7，\u767b\u5f55shell\u751f\u6548<\/p>\n<\/li>\n

        • \n

          ~\/.bashrc：\u7528\u6237\u7ea7，\u6bcf\u6b21\u6253\u5f00\u7ec8\u7aef\u751f\u6548<\/p>\n<\/li>\n

        • \n

          hadoop-env.sh：Hadoop\u670d\u52a1\u7ea7，\u5bf9Hadoop\u8fdb\u7a0b\u751f\u6548<\/p>\n<\/li>\n<\/ul>\n

          \u4e0d\u540c\u7684\u914d\u7f6e\u6709\u4e0d\u540c\u7684\u4f5c\u7528\u8303\u56f4，\u8981\u6839\u636e\u5b9e\u9645\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u914d\u7f6e\u4f4d\u7f6e\u3002<\/p>\n

          \n

          \u95ee\u9898\u56db：SSH\u514d\u5bc6\u7801\u767b\u5f55\u7684\u914d\u7f6e\u65f6\u673a<\/h3>\n

          \u9047\u5230\u7684\u60c5\u51b5<\/h4>\n

          \u5728\u542f\u52a8HDFS\u65f6，\u7cfb\u7edf\u4e0d\u65ad\u63d0\u793a\u8f93\u5165\u5bc6\u7801：<\/p>\n

          text<\/p>\n

          root@hadoop1's password:
          \nhadoop2's password:
          \nhadoop3's password:<\/p>\n

          \u6bcf\u6b21\u542f\u52a8\u90fd\u8981\u8f93\u5165\u5bc6\u7801，\u8fd9\u663e\u7136\u4e0d\u884c\u3002<\/p>\n

          \u95ee\u9898\u5206\u6790<\/h4>\n

          SSH\u514d\u5bc6\u7801\u767b\u5f55\u662fHadoop\u96c6\u7fa4\u6b63\u5e38\u8fd0\u884c\u7684\u57fa\u7840\u3002\u56e0\u4e3aHadoop\u9700\u8981\u901a\u8fc7SSH\u5728\u5404\u4e2a\u8282\u70b9\u95f4\u542f\u505c\u8fdb\u7a0b，\u5982\u679c\u6ca1\u6709\u514d\u5bc6\u7801\u767b\u5f55，\u6574\u4e2a\u96c6\u7fa4\u5c31\u65e0\u6cd5\u6b63\u5e38\u5de5\u4f5c\u3002<\/p>\n

          \u89e3\u51b3\u8fc7\u7a0b<\/h4>\n

          \u914d\u7f6eSSH\u514d\u5bc6\u7801\u767b\u5f55\u5176\u5b9e\u5f88\u7b80\u5355，\u4f46\u8981\u7406\u89e3\u5176\u4e2d\u7684\u539f\u7406：<\/p>\n

          bash<\/p>\n

          # 1. \u751f\u6210\u5bc6\u94a5\u5bf9
          \nssh-keygen -t rsa
          \n# \u4e00\u8def\u56de\u8f66，\u4f1a\u5728~\/.ssh\u76ee\u5f55\u751f\u6210id_rsa(\u79c1\u94a5)\u548cid_rsa.pub(\u516c\u94a5)<\/p>\n

          # 2. \u628a\u516c\u94a5\u590d\u5236\u5230\u9700\u8981\u8bbf\u95ee\u7684\u673a\u5668
          \nssh-copy-id hadoop@hadoop1
          \nssh-copy-id hadoop@hadoop2
          \nssh-copy-id hadoop@hadoop3
          \n# \u9700\u8981\u8f93\u5165\u5bc6\u7801，\u8fd9\u662f\u552f\u4e00\u4e00\u6b21\u9700\u8981\u5bc6\u7801\u7684\u5730\u65b9<\/p>\n

          \u539f\u7406\u5176\u5b9e\u5f88\u7b80\u5355：\u4f60\u7684\u673a\u5668\u6301\u6709\u79c1\u94a5，\u76ee\u6807\u673a\u5668\u7684authorized_keys\u6587\u4ef6\u91cc\u5b58\u6709\u4f60\u7684\u516c\u94a5\u3002\u5f53\u4f60SSH\u8fde\u63a5\u65f6，\u76ee\u6807\u673a\u5668\u4f1a\u7528\u516c\u94a5\u52a0\u5bc6\u4e00\u4e2a\u968f\u673a\u6570\u53d1\u7ed9\u4f60，\u4f60\u7528\u79c1\u94a5\u89e3\u5bc6\u540e\u53d1\u56de，\u8fd9\u6837\u5c31\u9a8c\u8bc1\u4e86\u4f60\u7684\u8eab\u4efd\u3002<\/p>\n

          \u5fc3\u5f97<\/h4>\n

          SSH\u514d\u5bc6\u7801\u767b\u5f55\u770b\u4f3c\u7b80\u5355，\u4f46\u5b83\u662f\u5206\u5e03\u5f0f\u7cfb\u7edf\u7684\u57fa\u77f3\u3002\u7406\u89e3\u4e86\u5b83\u7684\u539f\u7406，\u4ee5\u540e\u914d\u7f6e\u5176\u4ed6\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e5f\u4f1a\u66f4\u5f97\u5fc3\u5e94\u624b\u3002<\/p>\n

          \u53e6\u5916，\u4e00\u4e2a\u7ec6\u8282\u662f.ssh\u76ee\u5f55\u7684\u6743\u9650\u5fc5\u987b\u662f700，authorized_keys\u6587\u4ef6\u7684\u6743\u9650\u5fc5\u987b\u662f600，\u5426\u5219SSH\u4f1a\u62d2\u7edd\u4f7f\u7528\u3002\u8fd9\u4f53\u73b0\u4e86\u5b89\u5168\u673a\u5236\u5bf9\u6587\u4ef6\u6743\u9650\u7684\u4e25\u683c\u8981\u6c42\u3002<\/p>\n

          \n

          \u95ee\u9898\u4e94：NameNode\u683c\u5f0f\u5316，\u4e00\u6b21\u5c31\u591f\u4e86<\/h3>\n

          \u9047\u5230\u7684\u60c5\u51b5<\/h4>\n

          \u5728\u6298\u817e\u7684\u8fc7\u7a0b\u4e2d，\u6211\u591a\u6b21\u683c\u5f0f\u5316NameNode，\u7ed3\u679c\u53d1\u73b0DataNode\u542f\u52a8\u4e0d\u4e86\u3002\u67e5\u770b\u65e5\u5fd7，\u53d1\u73b0DataNode\u7684cluster ID\u548cNameNode\u7684\u4e0d\u4e00\u81f4\u3002<\/p>\n

          \u95ee\u9898\u5206\u6790<\/h4>\n

          \u6bcf\u6b21\u683c\u5f0f\u5316NameNode，\u90fd\u4f1a\u751f\u6210\u4e00\u4e2a\u65b0\u7684cluster ID\u3002\u4f46DataNode\u7684cluster ID\u662f\u5728\u7b2c\u4e00\u6b21\u8fde\u63a5NameNode\u65f6\u786e\u5b9a\u7684，\u4e4b\u540e\u5c31\u4e0d\u4f1a\u6539\u53d8\u3002\u5982\u679cNameNode\u7684cluster ID\u53d8\u4e86，DataNode\u5c31\u4f1a\u62d2\u7edd\u8fde\u63a5\u3002<\/p>\n

          \u89e3\u51b3\u8fc7\u7a0b<\/h4>\n

          \u89e3\u51b3\u65b9\u6848\u6709\u4e24\u79cd：<\/p>\n

        • \n

          \u5220\u9664DataNode\u4e0a\u7684\u6570\u636e\u76ee\u5f55，\u8ba9DataNode\u91cd\u65b0\u83b7\u53d6cluster ID：<\/p>\n<\/li>\n

          bash<\/p>\n

          rm -rf \/app\/hadoop\/hadoop-2.6.4\/data\/*<\/p>\n

        • \n

          \u66f4\u7b80\u5355\u7684\u505a\u6cd5：\u53ea\u5728\u7b2c\u4e00\u6b21\u5b89\u88c5\u65f6\u683c\u5f0f\u5316\u4e00\u6b21，\u4e4b\u540e\u9664\u975e\u8981\u5f7b\u5e95\u91cd\u5efa\u96c6\u7fa4，\u5426\u5219\u4e0d\u8981\u518d\u6b21\u683c\u5f0f\u5316\u3002<\/p>\n<\/li>\n

          \u5fc3\u5f97<\/h4>\n

          \u8fd9\u4e2a\u95ee\u9898\u7684\u6559\u8bad\u662f：\u6709\u4e9b\u64cd\u4f5c\u662f\u4e0d\u53ef\u9006\u7684，\u8981\u614e\u91cd\u3002NameNode\u683c\u5f0f\u5316\u5c31\u662f\u8fd9\u6837，\u5b83\u4f1a\u6e05\u7a7a\u6240\u6709\u5143\u6570\u636e，\u76f8\u5f53\u4e8e\u628a\u6574\u4e2a\u6587\u4ef6\u7cfb\u7edf\u91cd\u7f6e\u4e86\u3002<\/p>\n

          \u8fd9\u8ba9\u6211\u60f3\u5230，\u5728\u751f\u4ea7\u73af\u5883\u4e2d，NameNode\u7684\u6570\u636e\u662f\u6781\u5176\u5b9d\u8d35\u7684，\u9700\u8981\u5b9a\u671f\u5907\u4efd\u3002\u4e00\u65e6\u4e22\u5931，\u6574\u4e2a\u96c6\u7fa4\u7684\u6570\u636e\u5c31\u627e\u4e0d\u56de\u6765\u4e86\u3002<\/p>\n

          \n

          \u6700\u7ec8\u9a8c\u8bc1：WordCount\u7684\u6210\u529f\u65f6\u523b<\/h3>\n

          \u7ecf\u5386\u4e86\u4ee5\u4e0a\u79cd\u79cd\u95ee\u9898，\u5f53\u6700\u540e\u770b\u5230WordCount\u6210\u529f\u8f93\u51fa\u65f6，\u90a3\u79cd\u6210\u5c31\u611f\u662f\u65e0\u6cd5\u8a00\u55bb\u7684\u3002<\/p>\n

          bash<\/p>\n

          great 1
          \nhadoop 3
          \nhello 3
          \nis 1
          \nof 1
          \nworld 3<\/p>\n

          \u8fd9\u7b80\u5355\u7684\u51e0\u884c\u8f93\u51fa，\u80cc\u540e\u662f\u6574\u4e2aHadoop\u96c6\u7fa4\u7684\u6b63\u5e38\u8fd0\u884c\u3002\u4ece\u786c\u4ef6\u51c6\u5907\u5230\u7cfb\u7edf\u914d\u7f6e，\u4eceSSH\u514d\u5bc6\u7801\u5230\u73af\u5883\u53d8\u91cf\u8bbe\u7f6e，\u4ece\u6743\u9650\u5206\u914d\u5230\u670d\u52a1\u542f\u52a8，\u6bcf\u4e00\u4e2a\u73af\u8282\u90fd\u4e0d\u53ef\u6216\u7f3a\u3002<\/p>\n

          \n

          \u603b\u7ed3<\/h3>\n

          \u4e00\u5929\u7684\u65f6\u95f4，\u8e29\u4e86\u65e0\u6570\u7684\u5751，\u4f46\u4e5f\u5b66\u5230\u4e86\u5f88\u591a：<\/p>\n

        • \n

          \u6743\u9650\u95ee\u9898：\u7406\u89e3Linux\u7684\u6743\u9650\u6a21\u578b，\u4e0d\u8981\u628a\u7b80\u5355\u95ee\u9898\u590d\u6742\u5316<\/p>\n<\/li>\n

        • \n

          \u65e5\u5fd7\u5148\u884c：\u9047\u5230\u95ee\u9898\u7b2c\u4e00\u65f6\u95f4\u770b\u65e5\u5fd7，\u4e0d\u8981\u778e\u731c<\/p>\n<\/li>\n

        • \n

          \u73af\u5883\u53d8\u91cf：\u7406\u89e3\u4e0d\u540c\u914d\u7f6e\u6587\u4ef6\u7684\u751f\u6548\u8303\u56f4<\/p>\n<\/li>\n

        • \n

          \u57fa\u7840\u7ec4\u4ef6：SSH\u3001Java\u8fd9\u4e9b\u57fa\u7840\u7ec4\u4ef6\u8981\u914d\u7f6e\u6b63\u786e<\/p>\n<\/li>\n

        • \n

          \u64cd\u4f5c\u614e\u91cd：\u6709\u4e9b\u64cd\u4f5c（\u5982\u683c\u5f0f\u5316）\u662f\u4e0d\u53ef\u9006\u7684，\u8981\u4e09\u601d\u800c\u540e\u884c<\/p>\n<\/li>\n

          \u6700\u91cd\u8981\u7684\u662f，\u6211\u5b66\u4f1a\u4e86\u72ec\u7acb\u601d\u8003\u3002\u9047\u5230\u95ee\u9898\u65f6，\u4e0d\u518d\u53ea\u662f\u673a\u68b0\u5730\u8ddf\u7740\u6559\u7a0b\u8d70，\u800c\u662f\u4f1a\u60f3：\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u9519？\u5e94\u8be5\u600e\u4e48\u89e3\u51b3？\u6709\u6ca1\u6709\u66f4\u597d\u7684\u65b9\u6cd5？<\/p>\n

          \u8fd9\u5c31\u662f\u5b66\u4e60\u7684\u610f\u4e49\u6240\u5728\u3002\u5171\u52c9！<\/p>\n","protected":false},"excerpt":{"rendered":"

          \u6700\u8fd1\u5728\u5b66\u4e60\u5927\u6570\u636e\u6280\u672f，\u7b2c\u4e00\u4e2a\u62e6\u8def\u864e\u5c31\u662f\u642d\u5efaHadoop\u96c6\u7fa4\u3002\u8bf4\u5b9e\u8bdd，\u521a\u5f00\u59cb\u6211\u89c9\u5f97\u8fd9\u6709\u4ec0\u4e48\u96be\u7684，\u8ddf\u7740\u6559\u7a0b\u4e00\u6b65\u6b65\u6572\u547d\u4ee4\u4e0d\u5c31\u5b8c\u4e86？\u7ed3\u679c\u8fd9\u4e00\u6572\u5c31\u662f\u6574\u6574\u4e00\u5929，\u8e29\u4e86\u65e0\u6570\u5751，\u4ece\u201cPermission denied\u201d\u5230\u201cConnection refused\u201d，\u4ece\u201cJAVA_HOME not set\u201d\u5230\u201cNameNode format\u5931\u8d25\u201d，\u7b80\u76f4\u662f\u628a\u6240\u6709\u80fd\u8e29\u7684\u5751\u90fd\u8e29\u4e86\u4e00\u904d\u3002\u4f46\u56de\u8fc7\u5934\u6765<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[779,763,664,323],"topic":[],"class_list":["post-77604","post","type-post","status-publish","format-standard","hentry","category-server","tag-hadoop","tag-763","tag-664","tag-323"],"yoast_head":"\nHadoop\u96c6\u7fa4\u642d\u5efa\u8e29\u5751\u5168\u8bb0\u5f55 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/77604.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hadoop\u96c6\u7fa4\u642d\u5efa\u8e29\u5751\u5168\u8bb0\u5f55 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u6700\u8fd1\u5728\u5b66\u4e60\u5927\u6570\u636e\u6280\u672f，\u7b2c\u4e00\u4e2a\u62e6\u8def\u864e\u5c31\u662f\u642d\u5efaHadoop\u96c6\u7fa4\u3002\u8bf4\u5b9e\u8bdd，\u521a\u5f00\u59cb\u6211\u89c9\u5f97\u8fd9\u6709\u4ec0\u4e48\u96be\u7684，\u8ddf\u7740\u6559\u7a0b\u4e00\u6b65\u6b65\u6572\u547d\u4ee4\u4e0d\u5c31\u5b8c\u4e86？\u7ed3\u679c\u8fd9\u4e00\u6572\u5c31\u662f\u6574\u6574\u4e00\u5929，\u8e29\u4e86\u65e0\u6570\u5751，\u4ece\u201cPermission denied\u201d\u5230\u201cConnection refused\u201d，\u4ece\u201cJAVA_HOME not set\u201d\u5230\u201cNameNode format\u5931\u8d25\u201d，\u7b80\u76f4\u662f\u628a\u6240\u6709\u80fd\u8e29\u7684\u5751\u90fd\u8e29\u4e86\u4e00\u904d\u3002\u4f46\u56de\u8fc7\u5934\u6765\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/77604.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-02-24T16:06:18+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/77604.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/77604.html\",\"name\":\"Hadoop\u96c6\u7fa4\u642d\u5efa\u8e29\u5751\u5168\u8bb0\u5f55 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"isPartOf\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\"},\"datePublished\":\"2026-02-24T16:06:18+00:00\",\"dateModified\":\"2026-02-24T16:06:18+00:00\",\"author\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/77604.html#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.wsisp.com\/helps\/77604.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/77604.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.wsisp.com\/helps\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Hadoop\u96c6\u7fa4\u642d\u5efa\u8e29\u5751\u5168\u8bb0\u5f55\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\",\"url\":\"https:\/\/www.wsisp.com\/helps\/\",\"name\":\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"description\":\"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"contentUrl\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"caption\":\"admin\"},\"sameAs\":[\"http:\/\/wp.wsisp.com\"],\"url\":\"https:\/\/www.wsisp.com\/helps\/author\/admin\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Hadoop\u96c6\u7fa4\u642d\u5efa\u8e29\u5751\u5168\u8bb0\u5f55 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.wsisp.com\/helps\/77604.html","og_locale":"zh_CN","og_type":"article","og_title":"Hadoop\u96c6\u7fa4\u642d\u5efa\u8e29\u5751\u5168\u8bb0\u5f55 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","og_description":"\u6700\u8fd1\u5728\u5b66\u4e60\u5927\u6570\u636e\u6280\u672f，\u7b2c\u4e00\u4e2a\u62e6\u8def\u864e\u5c31\u662f\u642d\u5efaHadoop\u96c6\u7fa4\u3002\u8bf4\u5b9e\u8bdd，\u521a\u5f00\u59cb\u6211\u89c9\u5f97\u8fd9\u6709\u4ec0\u4e48\u96be\u7684，\u8ddf\u7740\u6559\u7a0b\u4e00\u6b65\u6b65\u6572\u547d\u4ee4\u4e0d\u5c31\u5b8c\u4e86？\u7ed3\u679c\u8fd9\u4e00\u6572\u5c31\u662f\u6574\u6574\u4e00\u5929，\u8e29\u4e86\u65e0\u6570\u5751，\u4ece\u201cPermission denied\u201d\u5230\u201cConnection refused\u201d，\u4ece\u201cJAVA_HOME not set\u201d\u5230\u201cNameNode format\u5931\u8d25\u201d，\u7b80\u76f4\u662f\u628a\u6240\u6709\u80fd\u8e29\u7684\u5751\u90fd\u8e29\u4e86\u4e00\u904d\u3002\u4f46\u56de\u8fc7\u5934\u6765","og_url":"https:\/\/www.wsisp.com\/helps\/77604.html","og_site_name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","article_published_time":"2026-02-24T16:06:18+00:00","author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"admin","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"3 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.wsisp.com\/helps\/77604.html","url":"https:\/\/www.wsisp.com\/helps\/77604.html","name":"Hadoop\u96c6\u7fa4\u642d\u5efa\u8e29\u5751\u5168\u8bb0\u5f55 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","isPartOf":{"@id":"https:\/\/www.wsisp.com\/helps\/#website"},"datePublished":"2026-02-24T16:06:18+00:00","dateModified":"2026-02-24T16:06:18+00:00","author":{"@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41"},"breadcrumb":{"@id":"https:\/\/www.wsisp.com\/helps\/77604.html#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.wsisp.com\/helps\/77604.html"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.wsisp.com\/helps\/77604.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.wsisp.com\/helps"},{"@type":"ListItem","position":2,"name":"Hadoop\u96c6\u7fa4\u642d\u5efa\u8e29\u5751\u5168\u8bb0\u5f55"}]},{"@type":"WebSite","@id":"https:\/\/www.wsisp.com\/helps\/#website","url":"https:\/\/www.wsisp.com\/helps\/","name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","description":"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41","name":"admin","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/","url":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","contentUrl":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","caption":"admin"},"sameAs":["http:\/\/wp.wsisp.com"],"url":"https:\/\/www.wsisp.com\/helps\/author\/admin"}]}},"_links":{"self":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/77604","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/comments?post=77604"}],"version-history":[{"count":0,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/77604\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media?parent=77604"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/categories?post=77604"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/tags?post=77604"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/topic?post=77604"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}