Chapter 7. Appendix: Upgrading Ambari Server from 1.2.0 to 1.2.1

Stop the Ambari Server and all Ambari Agents. From the Ambari Server host:

ambari-server stop

From each Ambari Agent host:

ambari-agent stop

Get the new Ambari bits. Use wget to fetch the repository file and replace the old repo file with the new repo file.

	Note
	If your cluster does not have access to the Internet, you need to set up a local repository with this data before you continue. See Configure the Local Repositories for more information.

Upgrade Ambari Server. From the Ambari Server host:

Upgrade the Ambari Server schema. From the Ambari Server host:

ambari-server upgrade

Upgrade the Ambari Agent on all hosts. From each Ambari Agent host:

Update Ambari Server hostname in Agent configuration file. On each Agent host, open /etc/ambari-agent/conf/ambari-agent.ini and edit this property:

hostname = {your.ambari.server.hostname}

Upgrade Nagios addons package and restart the http daemon. On each Agent host:

Start the Server and the Agents on all hosts. From the Server host:

ambari-server start

From each Agent host:

ambari-agent start

Open Ambari Web. Point your browser to http://{your.ambari.server}:8080

Use the Admin name and password you have set up to log in.

	Note
	If the Install Wizard is displayed, you need to refresh your browser so that it loads the new 1.2.1 code. Hold the Shift key down while clicking the refresh button on the browser. If this still does not solve the problem, clear your browser cache and relaunch the browser after restarting Ambari Server.

Re-set the Ambari-Ganglia connection. In Ambari Web.