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

Info

Take the backup of ambari-server configs.

/etc/ambari-serfver/conf/

ambari-server stop

Stop Agents

Stop Ambari-agent on every cluster node.

ambari-agent stop

Back up Ambari Database

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

DB Backup Commands

mkdir /tmp/ambari-server_db_bckp mysqldump --databases ambari > /tmp/ambari-server_db_bckp/ambari_mysql_bckp.sql

The upgraded version Ambari-2.7.8.4-2 and Ambari-2.7.8.5-2 supports only Python 2. Please ensure Python 2 is installed and configured on all cluster nodes before proceeding with the upgrade.

Verify the Python Version

python -V

Response: Python 2.7.x.

Add Ambari Repo on Cluster Nodes

Back up the Old Ambari Repository

mv /etc/yum.repos.d/ambari.repo /tmp/

Retrieve the latest Ambari repository details from Accessing Acceldata Repositories and add it to all cluster nodes.

List the existing Ambari packages

On RHEL

rpm -qa | grep ambari

On Ubuntu

apt list ambari-*

Example Output (if the current Ambari version is 2.7.6.0-1):

ambari-infra-solr-2.7.6.0-1.noarch ambari-agent-2.7.6.0-1.x86_64 ambari-server-2.7.6.0-1.x86_64 ambari-infra-solr-client-2.7.6.0-1.noarch

Remove the Existing Ambari Packages

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

On RHEL:

yum remove ambari-server

On Ubuntu:

apt remove ambari-server

  • On the Ambari agents node, remove the installed packages before upgrading:

On RHEL:

yum remove ambari-agent

On Ubuntu:

apt remove ambari-agent

  • On the Ambariinfra-solrnode, remove the installed packages before upgrading:

On RHEL:

yum remove ambari-infra-solr-client ambari-infra-solr -y

On Ubuntu:

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

Note

  • Adjust the package names based on the installed versions on each node.

  • You can verify installed packages before removal using:

On RHEL

rpm -qa | grep ambari

On Ubuntu

apt list ambari-*

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:

yum clean all yum install ambari-server -y

For Ubuntu:

apt clean apt update apt install ambari-server -y

Ambari Agent Node

For RHEL:

yum clean all yum install ambari-agent -y

For Ubuntu:

apt clean apt update apt install ambari-agent -y

Infra-solr Nodes

For RHEL:

yum clean all yum install ambari-infra-solr ambari-infra-solr-client -y

For Ubuntu:

apt clean apt update apt install ambari-infra-solr ambari-infra-solr-client-y

Ambari Server Configuration Files Restore

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

Restore ambari.properties File

cp conf_12_02_25_16_52.save/ambari.properties conf/

When prompted, enter 'y' to confirm.

cp: overwrite 'conf/ambari.properties'? y

Restore passwd.dat File

cp /etc/ambari-server/conf_12_02_25_16_52.save/password.dat /etc/ambari-server/conf/password.dat

Ambari Server Schema Upgrade

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

Run the Ambari Server upgrade command:

ambari-server upgrade -v

Response when prompted:

Ambari Server configured for MySQL. Confirm you have made a backup of the Ambari Server database [y/n] (n)? y Enter 'y' to confirm.

After the successful completion, you must see the following message.

Ambari Server 'upgrade' completed successfully.

Start Ambari Server

ambari-server start

Start Ambari Agent

ambari-agent start

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 Apr 30, 2026
Next to read:
Upgrade Ambari Agents
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Upgrade Ambari ServerStop Infra-solr ServiceStop Ambari Server and AgentsBack up Ambari DatabaseVerify the Python VersionAdd Ambari Repo on Cluster NodesInstall Ambari packagesAmbari Server Configuration Files RestoreAmbari Server Schema UpgradeVerify Ambari VersionStop Ambari ServerStop AgentsDB Backup CommandsBack up the Old Ambari RepositoryList the existing Ambari packagesRemove the Existing Ambari PackagesAmbari Server NodeAmbari Agent NodeInfra-solr NodesRestore ambari.properties FileRestore passwd.dat FileStart Ambari ServerStart Ambari Agent