问题描述：

在格式化namenode时，显示报错如下

2024-03-07 13:55:30,543 ERROR namenode.FSNamesystem: FSNamesystem initialization failed.
java.io.IOException: Invalid configuration: a shared edits dir must not be specified if HA is not enabled.
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:794)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:735)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:1180)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1645)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1755)
2024-03-07 13:55:30,549 INFO namenode.FSNamesystem: Stopping services started for active state
2024-03-07 13:55:30,549 INFO namenode.FSNamesystem: Stopping services started for standby state
2024-03-07 13:55:30,549 WARN namenode.NameNode: Encountered exception during format:
java.io.IOException: Invalid configuration: a shared edits dir must not be specified if HA is not enabled.
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:794)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:735)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:1180)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1645)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1755)
2024-03-07 13:55:30,549 ERROR namenode.NameNode: Failed to start namenode.
java.io.IOException: Invalid configuration: a shared edits dir must not be specified if HA is not enabled.
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:794)
    at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:735)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:1180)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1645)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1755)
2024-03-07 13:55:30,550 INFO util.ExitUtil: Exiting with status 1: java.io.IOException: Invalid configuration: a shared edits dir must not be specified if HA is not enabled.
 

问题分析： 

根据报错"如果未启用ha，则不得指定共享编辑目录"提示定位到./hdfs-site.xml文件。在hdfs-site.xml文件中配置过两个共享目录，分别是journalnode namenode，查看后发现journalnode.edits多输入一个t

问题解决：

删除多余的t，重新分发hadoop到salve1 slave2节点

再次进行namenode格式化

格式化成功问题解决

总结：

在修改配置文件部分一定要细心，namenode格式化过程中报错大多都是配置文件写错了。根据报错找到对应文件进行修改。