前言:无论是CM或者CDH使用的过程中,学习研究CDH使用、CDH升级、CM升级等等原因而考虑卸载CMCDH,本教程使用于基于CM安装的CDH的卸载。当然,如果CDH采用独立安装方式安装,在删除对应目录时,更改相应目录即可,主要分为CM卸载和CDH卸载两部分,理论上使用于CDH4CDH5的卸载(新版本如有更改则不适用)。

一、卸载CM:(CM主机执行)1、移除所有服务

       先在Cloudera Manager管理端停止集群所有组件服务,然后删除所有服务。

2、删除Manager Server一直选yes. 卸载不成功执行步骤3

       CM所安装的主机上执行如下命令,需要root权限:

sudo/usr/share/cmf/uninstall-cloudera-manager.sh

3、如果没有该脚本,则可以手动删除,先停止服务:

         命令如下:

sudo service cloudera-scm-server stop

sudo service cloudera-scm-server-db stop

sudo yum remove cloudera-manager-server

sudo yum remove cloudera-manager-server-db

二、卸载CDH:(所有主机执行)1、删除所有CDH节点上的CDH服务

sudo service cloudera-scm-agent hard_stop

2、卸载clouderarpm

查看:

rpm -qa | grep cloudera

逐个将其删除:

for f in `rpm -qa | grep cloudera `  ; do rpm -e ${f} ; done

sudo yum remove 'cloudera-manager-*' hadoop hue-common 'bigtop-*'

3、删除cloudera的安装目录

sudo rm -rf /usr/share/cmf /var/lib/cloudera* /var/cache/yum/x86_64/6/cloudera* /var/log/cloudera* /var/run/cloudera*   

**如报文件占用错误,重启机器,立即执行该命令

数据库配置:

rm -rf /etc/cloudera*

4清理Cloudera 相关文件

         命令如下:

sudo rm -rf /var/lib/flume-ng /var/lib/hadoop* /var/lib/hue /var/lib/oozie /var/lib/solr /var/lib/sqoop*


sudo rm -rf /dfs /mapred /yarn


rm -rf /var/run/hadoop* /var/run/flume-ng* /var/run/cloudera* /var/run/oozie* /var/run/sqoop* /var/run/zookeeper* /var/run/hbase* /var/run/impala* /var/run/hive* /var/run/hdfs-sockets


rm -rf /usr/lib/hadoop /usr/lib/hadoop* /usr/lib/hive /usr/lib/hbase /usr/lib/oozie /usr/lib/sqoop* /usr/lib/zookeeper /usr/lib/bigtop* /usr/lib/flume-ng /usr/lib/hcatalog


rm -rf /usr/bin/hadoop* /usr/bin/zookeeper* /usr/bin/hbase* /usr/bin/hive* /usr/bin/hdfs /usr/bin/mapred /usr/bin/yarn /usr/bin/sqoop* /usr/bin/oozie


rm -rf /etc/hadoop* /etc/zookeeper* /etc/hive* /etc/hue /etc/impala /etc/sqoop* /etc/oozie /etc/hbase* /etc/hcatalog


5、清除alternatives目录下配置

         命令如下:

rm -rf /etc/alternatives/flume*

rm -rf /etc/alternatives/hadoop*

rm -rf /etc/alternatives/hbase*

rm -rf /etc/alternatives/hive*

rm -rf /etc/alternatives/hue*

rm -rf /etc/alternatives/impala*

rm -rf /etc/alternatives/llama*

rm -rf /etc/alternatives/oozie*

rm -rf /etc/alternatives/pig*

rm -rf /etc/alternatives/solr*

rm -rf /etc/alternatives/spark*

rm -rf /etc/alternatives/sqoop*

rm -rf /etc/alternatives/zookeeper*

6、清除上一个版本的数据(旧版本是4.*需要删除该目录)

命令如下:

rm -rf /var/lib/alternatives/{cdh.app}

rm -rf /var/lib/alternatives/flume*

rm -rf /var/lib/alternatives/hadoop*

rm -rf /var/lib/alternatives/hbase*

rm -rf /var/lib/alternatives/hive*

rm -rf /var/lib/alternatives/hue*

rm -rf /var/lib/alternatives/impala*

rm -rf /var/lib/alternatives/llama*

rm -rf /var/lib/alternatives/oozie*

rm -rf /var/lib/alternatives/pig*

rm -rf /var/lib/alternatives/solr*

rm -rf /var/lib/alternatives/spark*

rm -rf /var/lib/alternatives/sqoop*

rm -rf /var/lib/alternatives/zookeeper*

7、删除日志及缓存数据目录

         命令如下:

tmpwatch -afv 1 /tmp

rm -rf /opt/cloudera/*

rm -rf /var/log/hadoop-*

rm -rf /var/log/hue*

rm -rf /var/log/oozie*

rm -rf /var/log/sqoop*

rm -rf /var/log/pig*

rm -rf /var/log/hive*

rm -rf /var/log/hbase*

rm -rf /var/log/zookeeper*

rm -rf /var/log/mahout*

rm -rf /var/log/impala*

rm -rf /var/log/hdfs*

rm -rf /var/lib/hdfs*

rm -rf /var/lib/alternatives/hdfs*

rm -rf /var/run/hdfs*

rm -rf /etc/hdfs*

rm -rf /etc/alternatives/hdfs*

rm -rf /usr/bin/hdfs*

rm -rf /var/run/hdfs*

rm -rf /var/log/yarn*

rm -rf /var/log/whirr*

rm -rf /var/log/mapred*

rm -rf /var/lib/mapred*

rm -rf /var/lib/alternatives/mapred*

rm -rf /var/run/mapred*

rm -rf /etc/mapred*

rm -rf /etc/alternatives/mapred*

rm -rf /usr/bin/mapred*

rm -rf /var/run/mapred*

8杀死相关的进程

for u in hdfs mapred cloudera-scm hbase hue zookeeper oozie hive impala flume spark; do sudo kill $(ps -u $u -o pid=); done

9删除 Cloudera Managerlock file

sudo rm /tmp/.scm_prepare_node.lock

10删除parcel 包分发文件和解压文件

rm -rf /opt/cloudera/parcel-cache /opt/cloudera/parcels

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