DAS service installation fails with the “python files missing” message

The installation might fail while you are adding the DAS service through the Ambari UI with an error such as the following: Python files are missing.

1. SSH in to the Ambari host as a root user.
2. Set the agent.auto.cache.update property to true in the /etc/ambari-server/conf/ambari.properties file.
3. Restart ambari using the following command:

   ambari-server restart