Before you can upgrade Apache Knox, you must have first upgraded your HDP components to the latest version (in this case, 2.4.2). This section assumes that you have already upgraded your components for HDP 2.4.2. If you have not already completed these steps, return to Getting Ready to Upgrade and Upgrade 2.2 Components for instructions on how to upgrade your HDP components to 2.4.2.

When working with the Knox Gateway in your Hadoop cluster, it is important you have the latest version of Knox installed so you can take advantage of new features and enhancements, in addition to ensuring your instance of Knox is in sync with other Hadoop components (e.g., Ranger, Spark, Hive, Hue, etc.) for stability and performance.  For example, if you need to upgrade your Hadoop cluster from 2.2 to 2.4.2, you should also make sure that your individual Hadoop components are also upgraded to the latest version.

	Note
	In this document, whenever you see a {} with a value inside, this denotes a value you must define.