Complete Uninstallation of ODP

In this document, we will guide you through the process of uninstalling Ambari, the robust platform for managing big data clusters, and completely uninstalling Acceldata's open-source data platform. Whether you are transitioning to a different solution or simply looking to clean up your environment, our step-by-step instructions will ensure a seamless removal process, allowing you to effectively manage your data infrastructure.

Stop all Services

To stop all services at once, perform the following:

Navigate to your Ambari console.
Click Services from the left navigation menu. A drop-down menu is displayed.
Click Stop All.

If all the services are not stopped successfully, you need to manually kill all the processes on all nodes by using the following command to list and then kill them.

Bash
    
 
ps -u hdfskill PID
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Host Clean-Up with HostCleanup.py

Ambari provides a HostCleanup.py script to automate the removal of packages, users, directories, repositories, processes, and alternatives based on a host-check report. Below is the combined, easy-to-follow usage for ODP uninstallation.

Locate the Host-Check Report

When you perform a host check, the report is saved at the below location.

Navigation: In the Ambari UI, navigate to Hosts → select hosts → Host Actions → Check Host.

Bash
    
 
/var/lib/ambari-agent/data/hostcheck_custom_actions.result
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This JSON-like file lists all the ODP-related packages and files detected on the host.

Script Usage and Options

Bash
    
​x
 
Usage: HostCleanup.py [options]​Options:  -h, --help            Show help message and exit.  -v, --verbose         Increase output verbosity.  -f FILE, --file=FILE  Read host-check report from FILE.  -o FILE, --out=FILE   Write detailed log to FILE.  -k SKIP, --skip=SKIP  Comma-separated items to skip: packages,users,directories,repositories,processes,alternatives.  -s, --silent          Accept default prompts without confirmation.​# By default, removes all items not listed in --skip.
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Note The script doesn’t just uninstall ODP components—it removes all listed packages and any software that depends on them, including OS-level libraries or utilities. If you only want to clean up the ODP files and leave your system packages intact, add --skip=packages (or --skip=users,packages) to the command.

Example Commands

Cleanup everything except user accounts.

Bash
    
 
python /usr/lib/ambari-agent/lib/ambari_agent/HostCleanup.py --silent --skip=users
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Skip both users and ODP packages along with their dependencies.

Bash
    
 
python /usr/lib/ambari-agent/lib/ambari_agent/HostCleanup.py --silent --skip=users,packages
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Verbose log to a file.

Bash
    
 
python /usr/lib/ambari-agent/lib/ambari_agent/HostCleanup.py -v --silent
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If you have any other additional packages, you need to remove them manually.

Remove log folders on all nodes

To remove all log folders on all nodes, run the following commands:

Bash
    
 
rm -rf /var/log/hadoop rm -rf /var/log/hbaserm -rf /var/log/hadoop-mapreduce rm -rf /var/log/hadoop-yarn rm -rf /var/log/hiverm -rf /var/log/hive-hcatalogrm -rf /var/log/hive2 rm -rf /var/log/knox rm -rf /var/log/solrrm -rf /var/log/impalarm -rf /var/log/zookeeperrm -rf /var/log/sparkrm -rf /var/log/spark2
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Remove Hadoop directories including HDFS data on all hosts

To remove Hadoop directories including HDFS data on all hosts, run the following commands:

Bash
    
 
rm -rf /hadooprm -rf /hdfs/hadooprm -rf /hdfs/lost+foundrm -rf /hdfs/varrm -rf /tmp/hadooprm -rf /usr/bin/hadooprm -rf /usr/odprm -rf /var/hadoop
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Remove configuration directories on all nodes

To remove the configuration directories on all nodes, run the following commands:

Bash
    
 
rm -rf /etc/hadooprm -rf /etc/hadoop-httpfsrm -rf /etc/hbaserm -rf /etc/hive2rm -rf /etc/hiverm -rf /etc/hive-hcatalogrm -rf /etc/hive_llaprm -rf /etc/impalarm -rf /etc/knoxrm -rf /etc/livy*rm -rf /etc/phoenixrm -rf /etc/pigrm -rf /etc/ranger-adminrm -rf /etc/ranger-usersyncrm -rf /etc/spark2rm -rf /etc/tezrm -rf /etc/zookeeperrm -rf /etc/tez*unlink /etc/ranger/kms/conf
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To delete ODP related repositories, run the following commands:

Bash
    
 
rm -rf /etc/yum.repos.d/odp.reporm -rf /etc/yum.repos.d/ambari-odp-1.repoyum clean all
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Remove all library folders on cluster Host

To remove all library folders on cluster Host, run the following commands:

Bash
    
 
rm -rf /var/lib/hadoop-hdfsrm -rf /var/lib/hadoop-mapreducerm -rf /var/lib/hadoop-yarnrm -rf /var/lib/hive*rm -rf /var/lib/impalarm -rf /var/lib/spark*rm -rf /var/lib/knoxrm -rf /var/lib/livy3rm -rf /var/lib/ambari-infra-solr-client
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To clear out hue from usr/local , run the following command:

Bash
    
 
rm -rf /usr/local/hue*
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Remove PIDs on all Hosts

To remove PIDs on all hosts, run the following commands:

Bash
    
 
rm -rf /var/run/hadooprm -rf /var/run/hadoop-mapreducerm -rf /var/run/hadoop-yarnrm -rf /var/run/hadoop-yarn-hbaserm -rf /var/run/hbaserm -rf /var/run/hive*rm -rf /var/run/knoxrm -rf /var/run/impalarm -rf /var/run/livy3rm -rf /var/run/spark*rm -rf /var/run/ranger*rm -rf /var/run/zookeeper
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Remove symlinks on all clusters' hosts (from /usr/bin)

To remove symlinks on all clusters hosts from /user/bin, run the following commands:

Bash
    
 
cd /usr/binrm -rf /usr/bin/odp-selectunlink hbaseunlink hdfsunlink hiveunlink hiveserver2unlink beelineunlink kafkaunlink mapredunlink ranger-adminunlink ranger-admin-startunlink ranger-admin-stopunlink ranger-kmsunlink ranger-usersyncunlink ranger-usersync-startunlink ranger-usersync-stopunlink yarnunlink zookeeper-clientunlink zookeeper-serverunlink zookeeper-server-cleanup​## use ls -l | grep odp  to check for any undeleted symlinks
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Remove symlinks on all clusters' hosts (from /usr/odp/current)

To remove symlinks on all clusters' hosts from /usr/odp/current, run the following commands:

Bash
    
 
cd /usr/odp/currentfor file in hadoop*; do unlink "$file"; donefor file in hbase*; do unlink "$file"; donefor file in hive*; do unlink "$file"; donefor file in livy*; do unlink "$file"; donefor file in ranger*; do unlink "$file"; donefor file in yarn*; do unlink "$file"; donefor file in kafka*; do unlink "$file"; donefor file in knox*; do unlink "$file"; donefor file in spark*; do unlink "$file"; donefor file in tez*; do unlink "$file"; donefor file in zookeeper*; do unlink "$file"; done
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Note If some files or directories are not deleted, you must remove them manually by using the following commands:

Bash
    
 
cd /usr/odp/3.3.6.1-1rm -rf /usr/odp/3.3.6.1-1rm -rf /usr/odp/
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To clear out the security conf & keytabs for the ODP components, run the following commands:

Bash
    
 
rm -rf /etc/security/limits.d/*rm -rf /etc/security/keytabs/
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To delete users, run the following commands:

Bash
    
 
userdel -r hbaseuserdel -r hcatuserdel -r hdfsuserdel -r hive2userdel -r kafkauserdel -r knoxuserdel -r mapreduserdel -r rangeruserdel -r sparkuserdel -r sqoopuserdel -r tezuserdel -r yarnuserdel -r zookeeper
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Remove Existing Files

To delete more existing files and directories manually, find them and run the following command:

Bash
    
find / -type f \( -name "*beeline*" -o -name "*hadoop*" -o -name "*hbase*" -o -name "*hdfs*" -o -name "*odp*" -o -name "*hive*" -o -name "*hiveserver2*" -o -name "*kafka*" -o -name "*mapred*" -o -name "*ranger*" -o -name "*sqoop*" -o -name "*yarn*" -o -name "*zookeeper*" \) | egrep -v "ambari|spool|jdk64|doc|share|repository|site-packages|locale|distutils"
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On completion of the above steps, ODP undergoes a thorough uninstallation, and the Hadoop cluster is effectively cleaned up.

Retain Ambari

To retain Ambari and only erase DB and its data, run the following commands:

Bash
    
 
ambari server stopambari-server reset​## after this you'll have to recreate the ambari db in mysql
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Set Up Fresh Ambari Database

To set up fresh Ambari database, run the following commands:

Bash
    
 
ambari-server setupambari-server start
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Complete Uninstallation of Ambari

Stop and remove the ambari-server (on Ambari host) and ambari-agent (on all nodes), by running the following commands:

Bash
    
 
ambari-server stopambari-agent stopyum erase ambari-serveryum erase ambari-agent
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Remove log folders on all nodes, by running the following commands:

Bash
    
 
rm -rf /var/log/ambari-agentrm -rf /var/log/ambari-server
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Remove config folders on all nodes, by running the following commands:

Bash
    
 
rm -rf /etc/ambari-agentrm -rf /etc/ambari-server
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Delete Ambari related repos, by running the following commands:

Bash
    
 
rm -rf /etc/yum.repos.d/ambari.repoyum clean all
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Remove PIDs on all nodes, by running the following commands:

Bash
    
 
rm -rf /var/run/ambari-agentrm -rf /var/run/ambari-server
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Remove library folders on all nodes, by running the following commands:

Bash
    
 
rm -rf /usr/lib/ambari-agentrm -rf /usr/lib/ambari-server-backupsrm -rf /var/lib/ambari-agentrm -rf /var/lib/ambari-server
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To delete users, run the following command:

Bash
    
 
userdel -r ambari-qa
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Manually find and delete more existing files and directories, by running the following command:

Bash
    
 
find / -name *ambari*
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Last updated on May 29, 2025

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