Resolving Hadoop Problems on Kerberized CDH 5.X

I ran into a problem in which I had a Kerberized CDH cluster and couldn’t run any hadoop commands from the command line, even with a valid Kerberos ticket. So with a valid ticket, this would fail: hadoop fs -ls / WARN ipc.Client: Exception encountered while connecting to the server : javax.security.sasl.SaslException: GSS initiate failed […]

Update on Minecraft on Digital Ocean

DevOps Day is this week! For the presentation I have a brand-y new Ansible playbook up on Github that lets anyone roll their very own Minecraft server on Digital Ocean. Check it out at github.com/saranicole/stem-minecraft. You can also see how the playbook works in action on Asciinema at asciinema.org/a/2gojihwmv3k8urg2oujppe66q. *Even Later Update: Slides are posted […]

From Zero to DevOps through Minecraft

I am blessed with a pretty awesome family, and as part of that awesomeness it just so happens that my sister’s two kids have a passion for Minecraft.  Her oldest, Cyrus, is 9 years old and had on his own already gotten into the more technical aspects available in the PC version of Minecraft.  When I saw […]

DevOps Engineering at Teradata

In May I switched companies and tech fields – I am now working as a DevOps Engineer at Teradata.  During my last year at Axeda I had the opportunity to work on projects dealing with Amazon Web Services and EC2, and I became fascinated with the idea of managing infrastructure in code.  I am more […]

9 Connected Hacks Covered By O’Reilly

The AT&T Hackathon in January was a blast, and my coverage of it as an M2M coach for the Arduino hardware gained some attention. Check out the O’Reilly post at http://blog.makezine.com/2013/01/30/results-from-arduino-hackathon-at-atts-2013-developer-summit and the original at http://developer.axeda.com/community/blog/9-connected-hacks-rocked-mobile-app-space-2013

Two Way Communication Via Post with a RESTful Web Service in Android

In order to create an Android app that could consume data from a web services call, I had to be able to post data to the web service. I posted data via the DefaultHttpClient class, then parsed out the JSON-serialized response. The code for the post was the following: public String callServiceAsString (String webservice, ArrayList […]

jQuery Deferred is an Ajax Coder’s Dream

As an Innovationeer, I seek out the interesting technological developments that can make my code more elegant. One of those developments has been jQuery’s Deferred object, implemented in jQuery 1.5 and after. The Problem: Imagine you’re the referee in a dumptruck race. The first one to reach the finishline and dump the trash is the […]