(This guide assume you have followed the guide to set up the namenode: Authenticated HDFS setup - NameNode).
The first thing we need to note before running a Datanode in secure mode, is that the secure Datanode needs the jsvc tool.... (more)
Before diving into the actual secure RPC protocol, let's set a simple secure HDFS server.
First we need Kerberos server. Hadoop tests offer the minikdc Kerberos server. Since I haven't found an official release for it, I've packaged a working version in the hadoop_rpc_walkthrough repository. Let... (more)
A small interlude from our Hadoop security posts.
When I was writing a new post, which explained briefly how to configure a new Hadoop cluster to run securely, I noticed that setting and getting the options from a cluster was cumbersome.... (more)