1、实在是在安装CDH的时候无法安装成功的话，只有重新启动了，下面给大家分享一个神器，按照这个脚本应该差不多就能卸载干净，然后重新安装，写一个脚本，内容如下，救命的神器呀：
#!/bin/bash
sudo /usr/share/cmf/uninstall-cloudera-manager.sh
sudo service cloudera-scm-server stop
sudo service cloudera-scm-server-db stop sudo service cloudera-scm-agent stop
sudo yum remove cloudera-manager-agent sudo yum remove cloudera-manager-server
sudo yum remove cloudera-manager-server-db-2 sudo yum remove 'cloudera-manager-*' bigtop-utils bigtop-jsvc bigtop-tomcat hadoop hadoop-hdfs hadoop-httpfs hadoop-mapreduce hadoop-yarn hadoop-client hadoop-0.20-mapreduce hue-plugins hbase hive oozie oozie-client pig zookeeper hue impala impala-shell solr-server sudo yum remove 'cloudera-manager-*' avro-tools crunch flume-ng hadoop-hdfs-fuse hadoop-hdfs-nfs3 hadoop-httpfs hbase-solr hive-hbase hive-webhcat hue-beeswax hue-hbase hue-impala hue-pig hue-plugins hue-rdbms hue-search hue-spark hue-sqoop hue-zookeeper impala impala-shell kite llama mahout oozie pig pig-udf-datafu search sentry solr-mapreduce spark-python sqoop sqoop2 whirr #sudo zypper remove 'cloudera-manager-*' bigtop-utils bigtop-jsvc bigtop-tomcat hadoop hadoop-hdfs hadoop-httpfs hadoop-mapreduce hadoop-yarn hadoop-client hadoop-0.20-mapreduce hue-plugins hbase hive oozie oozie-client pig zookeeper hue impala impala-shell solr-server #sudo zypper remove 'cloudera-manager-*' avro-tools crunch flume-ng hadoop-hdfs-fuse hadoop-hdfs-nfs3 hadoop-httpfs hbase-solr hive-hbase hive-webhcat hue-beeswax hue-hbase hue-impala hue-pig hue-plugins hue-rdbms hue-search hue-spark hue-sqoop hue-zookeeper impala impala-shell kite llama mahout oozie pig pig-udf-datafu search sentry solr-mapreduce spark-python sqoop sqoop2 whirr sudo yum clean all
#sudo zypper remove 'cloudera-manager-*' for u in cloudera-scm flume hadoop hdfs hbase hive httpfs hue impala llama mapred oozie solr spark sqoop sqoop2 yarn zookeeper; do sudo kill $(ps -u $u -o pid=); done umount /var/run/cloudera-scm-agent/process
sudo rm -Rf /usr/share/cmf /var/lib/cloudera* /var/cache/yum/cloudera* /var/log/cloudera* /var/run/cloudera* /var/run/hdfs* sudo rm /tmp/.scm_prepare_node.lock
sudo rm -Rf /var/lib/flume-ng /var/lib/hadoop* /var/lib/hue /var/lib/navigator /var/lib/oozie /var/lib/solr /var/lib/sqoop* /var/lib/zookeeper /var/lib/hbase /var/lib/hive /var/lib/impala sudo rm -Rf /dfs /mapred /yarn sudo rm -rf /var/log/hadoop* /var/log/hbase /var/log/impalad /var/log/zookeeper /var/cache/yum/x86_64/6/cloudera*