Here are some slides to an internal talk I gave on the whole embedded DevOps problem. I’ll have a lot more to say on this subject over the next couple of weeks, and at a talk I’ll be giving at AgileDC on October 24, 2016, but hopefully these slides will get you thinking. The key […]
Welcome to the first part of an ongoing series I’m calling DevOps in a Regulated and Embedded Environment. This first part looks at the particular challenges posed by a particular embedded environment. Future posts will dig into the details of how the more interesting problems were solved and what we should have done differently given […]
Gene Gotimer and Tom Stiehm were published again in CrossTalk Magazine, The Journal of Defense Software Engineering, this time in the May/June 2016 edition. DevOps and continuous delivery can improve software quality and reduce risk by offering opportunities for testing and some non-obvious benefits to the software development cycle. By taking advantage of cloud computing […]
Ivysettings.xml In my last project I was introduced to Ivy and Ant working together to handle library dependencies. Since Ant does not have a native automatic dependency resolution built in, we had to incorporate Ivy into the picture to manage all the necessary files for the code to compile. If you want to read more […]
Quality feedback is essential to any software delivery project and the best way to improve feedback is to reduce the developer feedback cycle and make any (and every) result transparent to the project, its members and its stakeholders. You should continue to mesure and broadcast results through communication mechanisms commonly referred to as “information radiators.” […]
Dear Loyal Readers, Everyone uses Jenkins. It is like Pringles on any project; once you start using it, who doesn’t want a nice framework / web UI for scheduling and polling tasks!? My first use of Jenkins was a simple CI build where every job simply executed the classic Makefile: make make test make install But as […]
The following is an edited excerpt from our webinar that took place March 10, 2015. The entire recording may be viewed here: https://attendee.gotowebinar.com/recording/737060184353086210. This is the first in a series of webinars on DevOps Engineering and discussed why DevOps Engineering is important. The webinar was given by Mr. Jeffery Payne and Mr. Richard Mills of […]
Introduction Jenkins has some great plugins for managing releases for Maven projects. You can tag projects in your source code repository, advance the versions, mark code as SNAPSHOTS, etc. And all of this can be done with one click of a button. The simplicity of this release process made me start looking for other simple […]
As I talked about last month when trying to demystify “UNDEFINED METHOD `[]’ FOR NIL:NILCLASS” error, it can be challenging to make sure all your attributes are set the way you want, or even at all. One thing that should be detectable is anytime you get nothing (nil) back from a Node[] call, we might as […]
Typically you’ll get an error that looks like this: NoMethodError ————- undefined method `[]’ for nil:NilClass Cookbook Trace: ————— /cookbooks/test/recipes/default.rb:15:in `from_file’ Relevant File Content: ———————- /cookbooks/test/recipes/default.rb: 12: 13: puts “JPM Recipe start” 14: puts node[‘att1’] 15>> puts node[‘att2’][‘att3’] 16: What just happened? Well, this recipe just referenced a sub-attribute (‘att3’) of a […]
