Step 1: Install CDH4
Cloudera strongly recommends that you set up a fully-functional CDH4 cluster before you begin configuring it to use Hadoop's security features. When a secure Hadoop cluster is not configured correctly, the resulting error messages are in a preliminary state, so it's best to start implementing security after you are sure your Hadoop cluster is working properly without security.
For information about installing and configuring Hadoop and CDH4 components, and deploying on a cluster, see the CDH4 Installation Guide
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