Upgrade the Ambari Database Schema
Upgrade Ambari Server database schema. On the host running Ambari Server:
ambari-server upgrade
Start the Ambari Server. On the host running Ambari Server:
ambari-server start
Start all Ambari Agents. On each host in your cluster running an Ambari Agent:
ambari-agent start
Open Ambari Web.
Point your browser to
http://<your.ambari.server>:8080
where <your.ambari.server> is the name of your ambari server host. For example, c6401.ambari.apache.org.
Important Refresh your browser so that it loads the new version of the Ambari Web code. If you have problems, clear your browser cache manually, then restart Ambari Server.