This post is a Zombie that I'm resurrecting from my drafts. I"m not doing any Java these days, but hopefully this post might be useful to somebody
In my quest to get better code coverage for the OVSDB project in OpenDaylight I started to look at increasing coverage for the REST API. It's pretty difficult to test this in an efficient way (lines of code) and frameworks like Robot would have been easier to use. The disadvantage with using an external test framework is that code coverage (using a plugin like JaCoCo) would not be logged. Therefore I harnessed my Junit-Jitsu and found a solution that lives in the JVM
The President certainly believes that these kinds of decisions are decisions that should be made by parents, because ultimately when we’re talking about vaccinations, we’re typically talking about vaccinations that are given to children. But the science on this, as our public health professionals I’m sure would be happy to tell you, the science on this is really clear.
Mary Pat and I have had our children vaccinated and we think that it’s an important part of being sure we protect their health and the public health. I also understand that parents need to have some measure of choice in things as well, so that’s the balance that the government has to decide.
Why Network Engineering Is a Top Job for 2015
According to career marketplace Glassdoor, one of the top 25 best jobs in America for 2015 is “network engineer.” No surprises here. Network engineering is a high growth industry: interesting and challenging work, tons of autonomy in how to solve problems and come up with solutions, well paying, and most importantly, the knowledge that you’re building something and bringing creations to life.
Indeed, the complexities of modern networks make network engineers indispensable, with the mix of virtual and real servers, cloud services and data centers, and of course, the integration of SDN into your network. On a good day, you get that rush of power from doing what is essentially mad science.
It should be noted that network engineering was one of eight IT-based jobs to crack the top 25. Clearly, technical skills are in demand.
You know, it brings me back to Nicholas Carr’s books “Does IT Matter?” and “The Big Switch,” which expanded on a 2003 article he wrote in Harvard Business Review claiming that “IT Doesn’t Matter.” Essentially, Carr predicted Continue reading
Brandon Chavis, an AWS Partner Solutions Architect, has a great post over on the AWS blog titled "Getting Started with Ansible and Dynamic Amazon EC2 Inventory Management" today.
From the post:
Today, the options for configuration and orchestration management seem nearly endless, making it daunting to find a tool that works well for you and your organization. Here at AWS, we think Ansible, an APN Technology Partner, provides a good option for configuration management due to its simplicity, agentless architecture, and ability to interact easily with your ever-changing, scaling, and dynamic AWS architecture.
Instead of having to push an agent to every new instance you launch via userdata, roll an agent into an AMI, or engage in similarly management-intensive deployments of your config management software, the Ansible framework allows administrators to run commands against Amazon Elastic Compute Cloud (Amazon EC2) instances as soon as they are available, all over SSH. This document intends to examine ways that your Amazon EC2 inventory can be managed with minimal effort, despite your constantly changing fleet of instances.
Read the full post here.
Last fall, I attended the Tech Field Day NFD8 event, and one of the presenting companies was Nuage Networks. This was actually the second time I’d seen Nuage present at an NFD event, the first one being NFD6 a year earlier. Upon my return from NFD8, I did a short write-up of each presenting sponsor for my coworkers at H.A. Storage Systems to keep them informed. The following is my recap of Nuage Networks after their presentation in which I explain why I think Nuage is really on-target with their SDN solution and is definitely a solution to keep an eye on.
Thank you Ed for sharing the video the led me to find this…
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Four network programmability certs, two exams for each cert (with matching video courses for each exam) – plus one introductory video. Today’s post discusses that introductory video course, namely:
No muss, no fuss – jump into the post for more details.
Cisco recommends their “Introducing Network Programmability Fundamentals” course to anyone who is:
Basically, before diving into the other exams and courses, this introductory course sets the stage. Do you have to watch it to get the certifications? No. Can you benefit? Sure. But if you do want to use this course, take it first in sequence, before taking the other Cisco network programmability courses.
Covering the bases, this list gives the highlights of the course:
Copper is heavy. I’m not talking about it’s atomic weight of 63 or the fact that bundles of it can sag ceiling joists. I’m talking about the fact that copper has inertia. It’s difficult to install and even more difficult to replace. Significant expense is incurred when people want to run new lines through a building. I never really understood how expensive a proposition that was until I went to work for a company that run copper lines.
According to a presentation that we saw at Tech Field Day Extra at Cisco Live Milan from Peter Jones at Cisco, Category 5e and 6 UTP cabling still has a significant install base in today’s organizations. That makes sense when you consider that 5e and 6 are the minimum for gigabit Ethernet. Once we hit the 1k mark with speeds, desktop bandwidth never really increased. Ten gigabit UTP Ethernet is never going to take off outside the data center. The current limitations of 10Gig over Cat 6 makes it impossible to use in a desktop connectivity situation. With a practical limit of around 50 meters, you practically have to be on top of the IDF closet Continue reading
When I shared the story behind migrating the blog to Jekyll and GitHub, I mentioned that one of the reasons for the migration was to embrace Git as a part of my regular workflow. I’d been recommending to folks that they learn and use Git, and now I needed to “walk the walk” as well as “talk the talk.” This post describes another step in my effort to “walk the walk.”
As the title of the post implies, this step involves the well-known tool Vagrant. (If you are unclear what Vagrant is or what it does, please read my quick introduction to Vagrant.) In the same presentation where I was recommending to folks to learn tools like Git, I was also recommending that they learn (and use, where applicable) tools like Vagrant. Once again, though, I was talking a good game but not backing it up with my actions. So, I’ve resolved to expand my use of Vagrant, sharing with all of my readers and followers along the way. And, because I believe that VMware Fusion is the most robust virtualization solution for Mac OS X, I’ll be using Vagrant with VMware Fusion.
So what will Continue reading
Four network programmability certs, two exams for each cert (with matching video courses for each exam) – plus one introductory video. Today’s post discusses that introductory video course, namely:
No muss, no fuss – jump into the post for more details.
Cisco recommends their “Introducing Network Programmability Fundamentals” course to anyone who is:
Basically, before diving into the other exams and courses, this introductory course sets the stage. Do you have to watch it to get the certifications? No. Can you benefit? Sure. But if you do want to use this course, take it first in sequence, before taking the other Cisco network programmability courses.
Covering the bases, this list gives the highlights of the course:
I expect to hear a lot about the “wonderful” idea of moving running VMs 100 msec away (across the continent) in the upcoming weeks. I would recommend you read a few of my older blog posts before considering it… and don’t waste time trying to persuade the true believers with technical arguments – talk with whoever will foot the bill or walk away.
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In this series of posts we’re going to tackle deploying a Kubernetes cluster. Kubernetes is the open source container cluster manager that Google released some time ago. In short, it’s a way to treat a large number of hosts as single compute instance that you can deploy containers against. While the system itself is pretty straight forward to use, the install and initial configuration can be a little bit daunting if you’ve never done it before. The other reason I’m writing this is because I had a hard time finding all of the pieces to build a bare metal kubernetes cluster. Most of the other blogs you’ll read use some mix of an overlay (Weave or Flannel) so I wanted to document a build that used bare metal hosts along with non-overlay networking.
In this first post we’ll deal with getting things running. This includes downloading the actual code from github, building it, deploying it to your machines, and configuring the services. In the following posts we’ll actually start deploying pods (we’ll talk about what those are later on), discuss the deployment model, and dig into how Kubernetes handles container networking. That Continue reading
We are happy to announce that we’ve recently completed a brand new CCIE Data Center Written Exam Video on Demand. In this coursework, you’ll immerse yourself in each technology your instructor, Jason Lunde CCIE #29431 x2 (R&S and Data Center) presents. Jason will also dissect each technology in a manner in which you will walk away with a complete understanding. Included in the coursework is close to 18 hours of lectures, white boards, and configuration topics!
Check out this Video on Demand course here.
Below, you will find the complete outline of our latest Video on Demand course! We’re quite confident that you won’t find a more thorough, up-to-date product on the market!