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This article introduces the relevant knowledge of "what is the method of uninstalling CDH5.X completely?" in the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

1. Shut down all services in the cluster.

This can be done through the clouder manger home page to shut down the cluster.

two。 Unloading

[root@master ~] # / usr/share/cmf/uninstall-cloudera-manager.sh

[root@slave1 ~] # service cloudera-scm-agent stop

[root@slave1 ~] # service cloudera-scm-agent stop

The following is that all clusters to be uninstalled need to perform cleanup:

[root@master ~] # umount / var/run/cloudera-scm-agent/process

[root@slave1 ~] # umount / var/run/cloudera-scm-agent/process

[root@slave2 ~] # umount / var/run/cloudera-scm-agent/process

[root@master ~] # rm-rf / usr/share/cmf / var/lib/cloudera* / var/cache/yum/x86_64/6/cloudera* / var/log/cloudera* / var/run/cloudera* / etc/cloudera*

3. Uninstall the installation package:

[root@slave1 ~] # rpm-qa | grep cloudera

[root@slave2 ~] # for f in `rpm-qa | grep cloudera `; do rpm-e ${f}; done (if any, execute it again)

4. Clear installation files

Rm-rf / var/lib/hadoop-* / var/lib/impala / var/lib/solr / var/lib/zookeeper / var/lib/hue / var/lib/oozie / var/lib/pgsql / var/lib/sqoop2 / data/dfs/ / data/impala/ / data/yarn/ / dfs/ / impala/ / yarn/ / var/run/hadoop-*/ / var/run/hdfs-*/ / 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 / etc/hadoop* / etc/zookeeper* / etc/hive* / etc/hue / etc/impala / etc/sqoop* / etc/oozie / etc/hbase* / etc/hcatalog

/ / only delete hadoop series, do not delete other software, otherwise the version control of other software will be broken

[root@master alternatives] # rm-rf `find / var/lib/alternatives/*!-name "mta"!-name "print"!-name "zlibrary-ui"-mtime-3`

[root@master alternatives] # rm-rf / etc/alternatives/*

5. Kill the related process:

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

6. Delete parcel package distribution files and extract files

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

This is the end of the content of "what is the method to uninstall CDH5.X completely". Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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