How to use CDH uninstall based on CM installation
This article focuses on "how to use CDH uninstall based on CM installation". Interested friends may wish to have a look at it. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how to use CDH uninstall based on CM installation.
1. Uninstall CM: (CM host executes) 1. Remove all service
First stop all component services of the cluster on the Cloudera Manager management side, and then delete all services.
2. Delete Manager Server (always select yes. Uninstall did not perform step 3 successfully)
Execute the following command on the host where CM is installed, requiring root permission:
Sudo/usr/share/cmf/uninstall-cloudera-manager.sh
3. If the script is not available, you can delete it manually and stop the service first:
The command is as follows:
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
Uninstall CDH: (execute by all hosts) 1. Delete CDH services on all CDH nodes
Sudo service cloudera-scm-agent hard_stop
2. Uninstall the rpm package of cloudera
View:
Rpm-qa | grep cloudera
Delete them one by one:
For f in `rpm-qa | grep cloudera `; do rpm-e ${f}; done
Sudo yum remove 'cloudera-manager-*' hadoop hue-common' bigtop-*'
3. Delete the installation directory of cloudera
Sudo rm-rf / usr/share/cmf / var/lib/cloudera* / var/cache/yum/x86_64/6/cloudera* / var/log/cloudera* / var/run/cloudera*
* * if a file occupation error is reported, restart the machine and execute the command immediately
Database configuration:
Rm-rf / etc/cloudera*
4. Clean up Cloudera related files
The command is as follows:
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. Clear the configuration under the alternatives directory
The command is as follows:
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. Erase the data from the previous version (the old version is 4.* the directory needs to be deleted)
The command is as follows:
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. Delete logs and cache data directories
The command is as follows:
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. Kill the related process
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. Delete the lock file of Cloudera Manager
Sudo rm / tmp/.scm_prepare_node.lock
10. Delete parcel package distribution files and extract files
Rm-rf / opt/cloudera/parcel-cache / opt/cloudera/parcels
At this point, I believe you have a better understanding of "how to use CDH uninstall based on CM installation". You might as well do it in practice! Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!
