[转]清理ambari安装的hadoop集群

本文针对redhat或者centos

对于测试集群，如果通过ambari安装Hadoop集群后，想重新再来一次的话，需要清理集群。

对于安装了很多hadoop组件的话，这个工作很繁琐。接下来是我整理的清理过程。

1，通过ambari将集群中的所用组件都关闭，如果关闭不了，直接kill -9 XXX

2，关闭ambari-server，ambari-agent

ambari-server stop
ambari-agent stop

3，卸载安装的软件

yum remove hadoop_2* hdp-select* ranger_2* zookeeper_* bigtop* atlas-metadata* ambari* postgresql spark*  slider* storm* snappy*

以上命令可能不全，执行完一下命令后，再执行

yum list | grep @HDP

查看是否还有没有卸载的，如果有，继续通过#yum remove XXX卸载

4，删除postgresql的数据

      postgresql软件卸载后，其数据还保留在硬盘中，需要把这部分数据删除掉，如果不删除掉，重新安装ambari-server后，有可能还应用以前的安装数据，而这些数据时错误数据，所以需要删除掉。

rm -rf /var/lib/pgsql

5，删除用户

     ambari安装hadoop集群会创建一些用户，清除集群时有必要清除这些用户，并删除对应的文件夹。这样做可以避免集群运行时出现的文件访问权限错误的问题。     

userdel oozie
userdel hive
userdel ambari-qa
userdel flume
userdel hdfs
userdel knox
userdel storm
userdel mapred
userdel hbase
userdel tez
userdel zookeeper
userdel kafka
userdel falcon
userdel sqoop
userdel yarn
userdel hcat
userdel atlas
userdel spark
userdel ams

rm -rf /home/atlas
rm -rf /home/accumulo
rm -rf /home/hbase
rm -rf /home/hive
rm -rf /home/oozie
rm -rf /home/storm
rm -rf /home/yarn
rm -rf /home/ambari-qa
rm -rf /home/falcon
rm -rf /home/hcat
rm -rf /home/kafka
rm -rf /home/mahout
rm -rf /home/spark
rm -rf /home/tez
rm -rf /home/zookeeper
rm -rf /home/flume
rm -rf /home/hdfs
rm -rf /home/knox
rm -rf /home/mapred
rm -rf /home/sqoop

6，删除ambari遗留数据

rm -rf /var/lib/ambari*
rm -rf /usr/lib/python2.6/site-packages/ambari_*
rm -rf /usr/lib/python2.6/site-packages/resource_management
rm -rf /usr/lib/ambri-*

7，删除其他hadoop组件遗留数据

rm -rf /etc/falcon rm -rf /etc/knox rm -rf /etc/hive-webhcat rm -rf /etc/kafka rm -rf /etc/slider rm -rf /etc/storm-slider-client rm -rf /etc/spark rm -rf /var/run/spark rm -rf /var/run/hadoop rm -rf /var/run/hbase rm -rf /var/run/zookeeper rm -rf /var/run/flume rm -rf /var/run/storm rm -rf /var/run/webhcat rm -rf /var/run/hadoop-yarn rm -rf /var/run/hadoop-mapreduce rm -rf /var/run/kafka rm -rf /var/log/hadoop rm -rf /var/log/hbase rm -rf /var/log/flume rm -rf /var/log/storm rm -rf /var/log/hadoop-yarn rm -rf /var/log/hadoop-mapreduce rm -rf /var/log/knox rm -rf /usr/lib/flume rm -rf /usr/lib/storm rm -rf /var/lib/hive rm -rf /var/lib/oozie rm -rf /var/lib/flume rm -rf /var/lib/hadoop-hdfs rm -rf /var/lib/knox rm -rf /var/log/hive rm -rf /var/log/oozie rm -rf /var/log/zookeeper rm -rf /var/log/falcon rm -rf /var/log/webhcat rm -rf /var/log/spark rm -rf /var/tmp/oozie rm -rf /tmp/ambari-qa rm -rf /var/hadoop rm -rf /hadoop/falcon rm -rf /tmp/hadoop rm -rf /tmp/hadoop-hdfs rm -rf /usr/hdp rm -rf /usr/hadoop rm -rf /opt/hadoop rm -rf /opt/hadoop2rm -rf /tmp/hadoop rm -rf /var/hadoop rm -rf /hadoop rm -rf /etc/ambari-metrics-collectorrm -rf /etc/ambari-metrics-monitorrm -rf /var/run/ambari-metrics-collectorrm -rf /var/run/ambari-metrics-monitorrm -rf /var/log/ambari-metrics-collectorrm -rf /var/log/ambari-metrics-monitorrm -rf /var/lib/hadoop-yarnrm -rf /var/lib/hadoop-mapreduce

8，清理yum数据源

#yum clean all