Version: 1.2.2.0

Ambari Upgrade

Ambari can be upgraded independently from ODP stack.

Prepare Ambari Upgrade

Be sure to review the Ambari 2.7.9.0 release notes for Known Issues and Behavioral Changes.
It’s necessary to possess root, administrative, or equivalent privileges on the host of the Ambari Server and all Ambari Agent hosts within the cluster.
It’s essential to create a backup of the Ambari Server database. You can use tool like pgdump or mysqldump.
You’re required to safely duplicate the Ambari Server configuration file located at /etc/ambari-server/conf/ambari.properties.

note

If you have made any modification to /var/lib/ambari-server/ambari-env.sh file (like for example modifying the heapsize), you will need to restore because during Ambari upgrade process, the existing /var/lib/ambari-server/ambari-env.sh file is overwritten. A backup copy of ambari-env.sh (with extension .rpmsave) is created.

Upgrading Ambari

Ambari services

If you are running Ambari Metrics and/or Ambari Infra services, you need to stop the services. Put the services in Maintenance Mode.
Stop Ambari server. Connect to the Ambari Server Host
If you are using systemd to start/stop Ambari Server
```
systemctl stop ambari-server
```
If you are not using systemd to start/stop Ambari Server
```
ambari-server stop
```
Stop Ambari Agent. Connect to on every host runing an Ambari Agent. If you are using systemd to start/stop Ambari Agent
```
systemctl stop ambari-agent
```
If you are not using systemd to start/stop Ambari Agent
```
ambari-agent stop
```
note
It is not recommanded to run Ambari Agent using systemd because when restarting, it can stop child process started by Ambari Agent and cause downtime.

Collect the new Ambari Repository file and replace the old one:

For Ubuntu 22:

wget -nv https://archive.clemlab.com/ubuntu22/ambari-release/2.7.9.0.0-110/ambari.list -O /etc/apt/sources.list.d/ambari.list

For CentOS/RedHat 7:

wget -nv https://archive.clemlab.com/centos7/ambari-release/2.7.9.0.0-110/ambari.repo -O /etc/yum.repos.d/ambari.repo

For CentOS/RedHat/RockyLinux/AlmaLinux 8:

wget -nv https://archive.clemlab.com/centos8/ambari-release/2.7.9.0.0-110/ambari.repo -O /etc/yum.repos.d/ambari.repo

Upgrading Ambari Server Package

For Ubuntu 22: Connect on Ambari Server Host

apt update -y
apt upgrade ambari-server
ambari-server upgrade

You can check that ambari-server package has been upgraded by typing the following command.

apt search ambari-server
Sorting... Done
Full Text Search... Done
ambari-server/opensource.clemlab.com,now 2.7.9.0.0-110 amd64 [installed]

For Centos/RHEL/Rocky/AlmaLinux 7/8: Connect on Ambari Server Host

yum upgrade -y ambari-server

You can check that ambari-server package has been upgraded by typing the following command.

yum list installed | grep ambari-server 
ambari-server.x86_64                         2.7.9.0.0-110   @ambari-2.7.9.0.0-110

Upgrade Ambari Server Metadata

ambari-server upgrade
Upgrading ambari-server
INFO: Upgrade Ambari Server
INFO: Updating Ambari Server properties in ambari.properties ...
INFO: Updating Ambari Server properties in ambari-env.sh ...
INFO: Original file ambari-env.sh kept
WARNING: Original file krb5JAASLogin.conf kept
INFO: File krb5JAASLogin.conf updated.
INFO: Fixing database objects owner
Ambari Server configured for Postgres. Confirm you have made a backup of the Ambari Server database [y/n] (n)? 

Backup Ambari Server Database then enter yes

INFO: Upgrading database schema
INFO: Return code from schema upgrade command, retcode = 0
INFO: Console output from schema upgrade command:
INFO: {}
INFO: Schema upgrade completed
Adjusting ambari-server permissions and ownership...
Ambari repo file doesn't contain latest json url, skipping repoinfos modification
Ambari Server 'upgrade' completed successfully.

When it is successfull you have the following message Ambari Server 'upgrade' completed successfully.

Upgrading Ambari Agent Package

For Ubuntu 22: Connect on every Ambari Agent Host

apt update -y
apt upgrade ambari-agent

You can check that ambari-agent package has been upgraded by typing the following command.

apt search ambari-agent
Sorting... Done
Full Text Search... Done
ambari-agent/opensource.clemlab.com,now 2.7.9.0.0-110 amd64 [installed]

For Centos/RHEL/Rocky/AlmaLinux 7/8: Connect on every Ambari Agent Host

yum upgrade -y ambari-agent

You can check that ambari-agent package has been upgraded by typing the following command.

yum list installed | grep ambari-agent 
ambari-agent.x86_64                         2.7.9.0.0-110   @ambari-2.7.9.0.0-110

Upgrading Ambari Infra Package

For Ubuntu 22: Connect on every Ambari Infra Host

apt update -y
apt upgrade ambari-infra-solr ambari-infra-solr-client

You can check that ambari-server package has been upgraded by typing the following command.

apt search ambari-agent
Sorting... Done
Full Text Search... Done
ambari-infra-solr/opensource.clemlab.com,now 2.7.9.0.0-110 amd64 [installed]
Apache Ambari Infra Solr Server Package build by Clemlab

ambari-infra-solr-client/opensource.clemlab.com,now 2.7.9.0.0-110 amd64 [installed]
Apache Ambari Infra Solr Client Package build by Clemlab

For Centos/RHEL/Rocky/AlmaLinux 7/8: Connect on every Ambari Infra Host

yum upgrade -y ambari-infra-solr ambari-infra-solr-client

You can check that ambari-server package has been upgraded by typing the following command.

yum list installed | grep ambari-infra-solr 
ambari-infra-solr.noarch                         2.7.9.0.0-110   @ambari-2.7.9.0.0-110 
ambari-infra-solr-client.noarch                  2.7.9.0.0-110   @ambari-2.7.9.0.0-110

Upgrading Ambari Metrics Package

For Ubuntu 22: Connect on every Ambari Metrics Host

apt update -y
apt upgrade ambari-metrics

You can check that ambari-server package has been upgraded by typing the following command.

apt search ambari-metrics
Sorting... Done
Full Text Search... Done
ambari-metrics/opensource.clemlab.com,now 2.7.9.0.0-110 amd64 [installed]
Ambari Metrics Package Build by Clemlab company

For Centos/RHEL/Rocky/AlmaLinux 7/8:

yum upgrade -y ambari-metrics

You can check that ambari-metrics package has been upgraded by typing the following command.

yum list installed | grep ambari-metrics 
ambari-metrics.x86_64                         2.7.9.0.0-110   @ambari-2.7.9.0.0-110

Starting Ambari Server after the upgrade
Connect on Ambari Server Host
If you are using systemd to start/stop Ambari Server
```
systemctl start ambari-server
```
If you are not using systemd to start/stop Ambari Server
```
ambari-server start
```
Starting Ambari Agent after the upgrade
Connect on Ambari Agent Host
```
ambari-agent start
```
Connect to the WebUI for example http://ambari.clemlab.com:8080 or https://ambari.clemlab.com:8442 (if SSL/TLS is enabled) to check that everything is okay, and restart Ambari Infra and Ambari Metrics services

Ambari Upgrade

Prepare Ambari Upgrade​

Upgrading Ambari​

Ambari services​

Prepare Ambari Upgrade

Upgrading Ambari

Ambari services