Google Chrome, SPNEGO, and WebHDFS on Hadoop

I’ve previously noted that we’re using Kerberos to handle the authentication on our Hadoop clusters.  One of the features that we had previously not had because of configuration issues, was the ability to use WebHDFS to browse around the cluster.  With our latest cluster, we figured out the right incantation of Kerberos and SPNEGO configurations […]

Pig ‘local’ mode fails when Kerberos auth is enabled.

I ran across this interesting Kerberos authentication bug today on Cloudera’s CDH4. It appears to affect all versions of pig, but only when running in local mode. I want to run pig in local mode. This implies that pig fires up everything it needs to run the MapReduce job on your local machine without having […]

Followup on Cloudera HUE’s Kerberos kt_renewer

Just a short followup about the HUE kt_renewer issue I discovered. It turns out that the issue was me and not HUE. The fix turned out to be pretty simple once I saw the clue in a related issue. It seems like Cloudera Manager had the same issue. The problem ended up being a missing […]

Kerberos kt_renewer failures with HUE on CDH4

First off, I’m not exactly sure if this is a Hadoop User Environment (HUE) issue or if this is a broken setup on my Kerberos environment. I have a thread open on the HUE users list, but haven’t had any followup. I’ve just fired up HUE for the first time to talk with a kerberos-enabled […]

Authenticating to Austin AD from Linux

Woot!  With the help of barthag, I got one of our linux boxes configured to provide passwd file map backend via AD/LDAP and authentication via AD/Kerberos.  Most of the problems stem from permissions issues on the AD side and making sure things are open “enough” to let us through to query for information. On the […]

Useful LDAP/Kerberos integration resources

I was recently in a meeting discussing the integration of Unix account management (passwd and group) with Active Directory via LDAP and Kerberos.  Having done some of this at a previous job, I’d already done some research into getting it working.  I found some useful resources back then on getting this all working right.  I […]