问题处理Shutting down NameNode at java.net.UnknownHostException: node1: node1: 未知的名称服务

最新推荐文章于 2024-10-20 13:16:16 发布
原创 最新推荐文章于 2024-10-20 13:16:16 发布 · 1.8k 阅读 · 4 ·
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#linux 内核 文件系统 网络

本文介绍了解决因IP对应的主机名与实际主机名不匹配导致的问题的方法。提供了两种解决方案：一是通过修改主机名，二是修改IP映射。

出现此问题是因为所设定的ip对应的主机名与实际主机名不匹配。

方法一：修改主机名

命令  vim /etc/sysconfig/network

将出现的HOSTNAME=xxx中的xxx改成相匹配的主机名

方法二：修改ip映射

命令  vim /etc/hosts

将ip地址后的主机名改成你的主机名。

java.lang.IllegalArgumentException: java.net.UnknownHostException: node1问题的解决
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具体解决方案可能需要根据具体情况进行调整。此外，Log4j 的警告信息与异常的根本原因无关，但在程序中使用 Log4j 时，最好配置日志附加器以确保您接收到所有相关的日志消息。这个错误看起来与一个使用 Apache Hadoop 分布式文件系统 (HDFS) 的 Java 程序有关。4、在Hadoop可以正常连接idea和Hadoop的配置文件正常的情况下，2、是虚拟的网路连接ip地址问题，自己配置虚拟机的IP地址。1、如果是主机名的问题，就重新配置node1的主机名称。命令打开hosts文件。
解决Failed to start namenode: Cannot assign requested address
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尝试在云服务器上多节点安装 hadoop，在我node1的 start-dfs.sh 命令上，datanode正在启动，但namenode无法启动并出现以下错误 2022-05-09 16:37:45,820 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: Failed to start namenode. java.net.BindException: Problem binding to [node1:8020] java.net.BindE
hadoop格式化namenode失败
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原文地址：http://hi.baidu.com/leibin_neu/item/467e2213104821483a176e12 一下是错误信息： [root@localhost conf]# hadoop namenode -format 12/07/11 21:48:35 INFO namenode.NameNode: STARTUP_MSG: /********
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问题处理Shutting down NameNode at java.net.UnknownHostException: node1: node1: Name or service not known
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刚配置hadoop2.2，格式化namenode时候报的这个错。 原因是hadoop在格式化HDFS的时候，通过hostname命令获取到的主机名在/etc/hosts文件中进行映射的时候，没有找到，也就是名字不一样。 这里需要修改一下用户的主机名。 查看自己用户的主机名：hostname 查看/etc/hosts内容：cat /etc/hosts 发现自己的hosts中并没有nod...
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主机映射问题把#去掉。
SHUTDOWN_MSG: Shutting down NameNode at localhost/127.0.0.1
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SHUTDOWN_MSG: Shutting down NameNode at localhost/127.0.0.1 遇到这个错误  就去看hostname的名称 是否和 /etc/hosts中的ip是否配的一致，如果没有的话，就修改下 需要重启网络 如果是mac的话 命令如下 网卡的启动与关闭：ifconfig en0 up/down   但是有情况出现  我发现这种情况是正常现象...
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