HADOOP Format namenode Node prep script

In general, live nodes is 0 because the Clusterid number in Namenode and Datanode is different because of repeated formatting. If you do not need to save the data, just redo it, you need the following steps.

SSH hd1 rm/home/hadoop/namenode/*-RF

SSH hd1 rm/home/hadoop/hdfs/*-RF

SSH hd2 rm/home/hadoop/hdfs/*-rf

SSH HD3 rm/home/hadoop/hdfs/*-RF

SSH hd4 rm/home/hadoop/hdfs/*-RF

SSH hd1 rm/home/hadoop/tmp/*-RF

SSH hd2 rm/home/hadoop/tmp/*-rf

SSH HD3 rm/home/hadoop/tmp/*-RF

SSH hd4 rm/home/hadoop/tmp/*-RF

SSH hd1 rm/home/hadoop/hadoop/logs/*-RF

SSH hd2 rm/home/hadoop/hadoop/logs/*-rf

SSH HD3 rm/home/hadoop/hadoop/logs/*-RF

SSH hd4 rm/home/hadoop/hadoop/logs/*-RF

When you're done, you can format it.

Hadoop Namenode-format

HADOOP Format namenode Node prep script