cdh namenode 恢复 (解决方法与步骤)
下面内容仅为某些场景参考,为稳妥起见请先联系上面的专业技术工程师,具体环境具体分析。
2023-09-18 20:10 77
要恢复CDH NameNode,可以按照以下步骤进行操作:
1. 停止所有CDH服务: ``` sudo service cloudera-scm-agent stop sudo service cloudera-scm-server stop sudo service cloudera-scm-server-db stop ```
2. 进入NameNode的Data目录,通常位于`/var/lib/hadoop-hdfs/cache/hdfs/dfs/name`: ``` cd /var/lib/hadoop-hdfs/cache/hdfs/dfs/name ```
3. 删除`current`目录下的所有文件: ``` rm -rf current/* ```
4. 启动CDH服务: ``` sudo service cloudera-scm-server-db start sudo service cloudera-scm-server start sudo service cloudera-scm-agent start ```
5. 执行以下命令来格式化NameNode: ``` sudo -u hdfs hdfs namenode -format ```
6. 启动HDFS服务: ``` sudo service hadoop-hdfs-namenode start sudo service hadoop-hdfs-datanode start ```
完成以上步骤后,CDH NameNode应该已经恢复并可以正常运行了。