Upgrade Ambari Server

Follow the steps below to upgrade the Ambari server.

Stop Infra-solr Service

Stop the Infra-solr Service from Ambari-UI.

Stop Ambari Server and Agents

Stop Ambari Server

Take the backup of ambari-server configs.

/etc/ambari-serfver/conf/

Bash
    
 
ambari-server stop
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Stop Agents

Stop Ambari-agent on every cluster node.

Bash
    
 
ambari-agent stop
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Back up Ambari Database

Take the Ambari-server backend database backup from the server host.

DB Backup Commands

Bash
    
 
mkdir /tmp/ambari-server_db_bckpmysqldump --databases ambari > /tmp/ambari-server_db_bckp/ambari_mysql_bckp.sql
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The upgraded version Ambari-2.7.8.4-3 supports only Python 3. Please ensure Python 3 is installed and configured on all cluster nodes before proceeding with the upgrade.

Verify the Python Version

Bash
    
 
python -V
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Response: Python 3.x.x.

Add Ambari Repo on Cluster Nodes

Back up the Old Ambari Repository

Bash
    
 
mv /etc/yum.repos.d/ambari.repo /tmp/
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Retrieve the latest Ambari repository details from Accessing Acceldata Repositories and add it to all cluster nodes.

List the existing Ambari packages

On RHEL

Bash
    
 
rpm -qa | grep ambari
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On Ubuntu

Bash
    
 
apt list ambari-*
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Example Output (if the current Ambari version is 2.7.6.0-1):

Bash
    
 
ambari-infra-solr-2.7.6.0-1.noarchambari-agent-2.7.6.0-1.x86_64ambari-server-2.7.6.0-1.x86_64ambari-infra-solr-client-2.7.6.0-1.noarch
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Remove the Existing Ambari Packages

On the Ambari Server node, remove the installed packages before upgrading:

On RHEL:

Bash
    
 
yum remove ambari-server
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On Ubuntu:

Bash
    
 
apt remove ambari-server
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On the Ambari agents node, remove the installed packages before upgrading:

On RHEL:

Bash
    
 
yum remove ambari-agent
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On Ubuntu:

Bash
    
 
apt remove ambari-agent
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On the Ambariinfra-solrnode, remove the installed packages before upgrading:

On RHEL:

Bash
    
 
yum remove ambari-infra-solr-client ambari-infra-solr -y
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On Ubuntu:

Bash
    
 
apt remove ambari-infra-solr-client ambari-infra-solr -y
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Note

Adjust the package names based on the installed versions on each node.
You can verify installed packages before removal using:

On RHEL

Bash
    
 
rpm -qa | grep ambari
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On Ubuntu

Bash
    
 
apt list ambari-*
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Make sure the Amabri packages are not installed.

Install Ambari packages

Install the latest Ambari-server only on ambari-server node.

Ambari Server Node

For RHEL:

Bash
    
 
yum clean allyum install ambari-server -y
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For Ubuntu:

Bash
    
 
apt clean apt update apt install ambari-server -y
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Ambari Agent Node

For RHEL:

Bash
    
 
yum clean allyum install ambari-agent -y
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For Ubuntu:

Bash
    
 
apt cleanapt updateapt install ambari-agent -y
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Infra-solr Nodes

For RHEL:

Bash
    
 
yum clean allyum install  ambari-infra-solr  ambari-infra-solr-client -y
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For Ubuntu:

Bash
    
 
apt cleanapt updateapt install ambari-infra-solr  ambari-infra-solr-client-y
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Ambari Server Configuration Files Restore

Restore the configuration files backed up at step 4 (Backup Taken in step 4).

Restore ambari.propertoies File

Bash
    
 
cp conf_12_02_25_16_52.save/ambari.properties  conf/
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When prompted, enter 'y' to confirm.

Bash
    
 
cp: overwrite 'conf/ambari.properties'? y
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Restore passwd.dat File

Bash
    
 
cp /etc/ambari-server/conf_12_02_25_16_52.save/password.dat /etc/ambari-server/conf/password.dat
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Java and JSVC upgrade

Set up Java 11 on all nodes

Bash
    
​x
 
# Install Java 11 on ALL nodesyum install -y java-11-openjdk java-11-openjdk-devel​​# Configure Java 11 on ALL nodesupdate-alternatives --config javaupdate-alternatives --config javac
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Install JSVC

Bash
    
 
yum install bigtop-jsvc* -y
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Ambari Server Schema Upgrade

Before upgrading, ensure a database backup has been taken (as mentioned in Step 6).

Update ambari.properies

Bash
    
 
# Update java homes with JDK 11java.home=/usr/lib/jvm/java-11-openjdkstack.java.home=/usr/lib/jvm/java-11-openjdk
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Add new properties in ambari.properties

In case of using Oracle 19C as Database, download ojdbc11.jar and update custom.oracle.jdbc.name in ambari.properties, also run:

cp ojdbc11.jar /var/lib/ambari-server/resources/

Run the Ambari Server upgrade command:

Bash
    
 
ambari-server upgrade -v
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Response when prompted:

Bash
    
 
Ambari Server configured for MySQL. Confirm you have made a backup of the Ambari Server database [y/n] (n)? y​Enter 'y' to confirm.
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After the successful completion, you must see the following message.

Bash
    
 
Ambari Server 'upgrade' completed successfully.
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Start Ambari Server

Bash
    
 
ambari-server start
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Start Ambari Agent

Bash
    
 
ambari-agent  start
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Once started, verify that the Ambari UI is accessible using the same URL as before.

Verify Ambari Version

Verify the upgraded Ambari version in admin->about on the top right corner in Ambari UI.

The Ambari version is upgraded successfully.

Last updated on Jan 29, 2026

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