Upgrade Ambari Server

1. Stop Management Pack Services: Use the Ambari UI to stop service: Spark3.
2. Stop Infra-Solr Service: Navigate to Ambari > Infra Solr > Actions > Stop.
3. Backup Management Pack Configurations: Follow the Prerequisites documentation for backing up configurations.
4. Database Backup: Backup all stack databases.

Sample Database Backup:

mkdir /tmp/backup/

mysqldump -u <your_username> -p<your_password> ambari > /tmp/backup/ambari_backup.sql

mysqldump -u <your_username> -p<your_password> hive > /tmp/backup/hive_backup.sql

mysqldump -u <your_username> -p<your_password> ranger > /tmp/backup/ranger_backup.sql

mysqldump -u <your_username> -p<your_password> rangerkms > /tmp/backup/rangerkms_backup.sql

mysqldump -u <your_username> -p<your_password> oozie > /tmp/backup/oozie_backup.sql

If there are any other management pack databases, back them up at this step as well.

5. Remove Management Pack Services: Delete Mpack services using Ambari UI.
6. Uninstall Management Packs: Follow instructions provided here to remove management packs.
7. Stop Ambari Server and Ambari Agents:

ambari-server stop

ambari-agent stop

Warning Stop the Ambari Agents on all nodes in the cluster.

8. Backup Ambari Server Configuration:

cp -r /etc/ambari-server/conf /etc/ambari-server/conf_backup

9. Erase Ambari Server:

For RHEL:

yum erase ambari-server -y

For Ubuntu:

apt remove ambari-server -y

10. Update Repository Files: Update ambari.repo (RedHat) or ambari.list (Ubuntu).
11. Install Updated Ambari Server:

For RHEL:

yum clean all

yum install ambari-server -y

For Ubuntu:

apt clean

apt install ambari-server -y

12. Restore Configuration Files: Copy ambari.properties and password.dat to /etc/ambari-server/conf/.
13. Upgrade Ambari Server Database Schema:

ambari-server upgrade

14. Start Ambari Server:

ambari-server start

15. Access Ambari UI: Use your browser to access the UI.
16. Install Required Mpacks: Follow documentation for installing mpacks and restoring configurations.