In my previous post “An important Hadoop security configuration parameter you may have missed” I was talking about importance of the hadoop.security.auth_to_local configuration parameter and promised to provide some solutions using this parameter.
I want to focus on a couple of practical use examples in this post, and if you want to learn more about this, here are links to the existing documentation:
- By Hortonworks: http://hortonworks.com/blog/fine-tune-your-apache-hadoop-security-settings/ (IMHO the best documentation to date for Hadoop)
- By Cloudera: http://www.cloudera.com/content/cloudera/en/documentation/cdh4/v4-3-1/CDH4-Security-Guide/cdh4sg_topic_19.htm
- This parameter is actually similar to Kerberos’ auth_to_local: http://web.mit.edu/kerberos/krb5-1.12/doc/admin/conf_files/krb5_conf.html