Automation Testing: Tools and Concepts
One of the key tenets of DevOps is automation, or more specifically, “Infrastructure as Code.” That means your system configuration is expressed as a series of scripts that can be executed by your configuration management software, repeatedly, across multiple machines.
Treating infrastructure as code has many benefits, including the abilities to control when and how changes are applied, to apply changes quickly and to manage your changes with version control. Most importantly, because it’s code, you can test it.
If you’ve been maintaining computer systems for any amount of time, you’ve probably accidentally broken something important when you were making a configuration change; either the change didn’t work as you expected or you typed the wrong command. What if you had been able to write your changes ahead of time and test them before you applied them to production? Infrastructure as Code enables you to do just that.
Software developers have been testing their code for a long time, and we can leverage their experience and knowledge and apply it to Infrastructure as Code. So, just as there are a series of testing tools available for software engineers, automation engineers can also draw from a collection of tools and build themselves a complete end-to-end Continue reading
HP Spearheads Open Source Network OS Initiative
Linux-based OpenSwitch NOS is designed to provide data center networks with more flexibility.Software-Defined IXP with Laurent Vanbever on Software Gone Wild
A while ago I started discussing the intricate technical details of fibbing (an ingenious way of implementing traffic engineering with traditional OSPF) with Laurent Vanbever and other members of his group, and we decided to record a podcast on this topic.
Things never go as planned in a live chat, and we finished talking about another one of his projects – software defined Internet exchange point (SDX), the topic of Episode 41 of Software Gone Wild.
Read more ...SDN 101: OpenFlow, HP Virtual Routers and GNS3
In a previous blog entry, I showed you how to integrate Mininet and GNS3 (SDN 101: Mininet (OpenFlow) and GNS3) for learning SDN andSoftware defined WAN (SD-WAN) is really about Intelligence ..
Lets admit that most of us in the networking domain know as much about SD-WAN as an average 6th grader on fluid mechanics — which is to say pretty much nothing. We take it as something much grander and exotic than what it really is and are obviously surrounded by friends and well-wishers who wink conspiratorially that they “know it all” and consider themselves on an intellectual high ground to educate us on matters of this rich and riveting biological social interaction. Like most others in that tender and impressionable age, i did get swayed by what i heard and its only later that i was able to sort things out in my head, till it all became somewhat clear.
The proverbial clock’s wound backwards and i experience that feeling of deja-vu each time i read an article on SD-WAN that either extols its virtues or vilifies it as something that has always existed and is being speciously served on a platter dressed up as something that it is not. And like the big boys then, there are men who-know-it-all, who have already written SD-WAN off as something that has always existed and really presents nothing new here. Clearly, i disagree with that view.
Software defined WAN (SD-WAN) is really about Intelligence ..
Lets admit that most of us in the networking domain know as much about SD-WAN as an average 6th grader on sex — which is to say pretty much nothing. We take it as something much grander and exotic than what it really is and are obviously surrounded by friends and well-wishers who wink conspiratorially that they “know it all” and consider themselves on an intellectual high ground to educate us on matters of this rich and riveting biological social interaction. Like most others in that tender and impressionable age, i did get swayed by what i heard and its only later that i was able to sort things out in my head, till it all became somewhat clear — surely i am nowhere close to Mr. Hefner who has, and am willing to wager large amounts here, gamed it entirely and has acquired a skill that only a few of us get blessed with.
The proverbial clock’s wound backwards and i experience that feeling of deja-vu each time i read an article on SD-WAN that either extols its virtues or vilifies it as something that has always existed and is being speciously served on a platter dressed up as something that it is not.
I presume, perhaps a trifle rashly, that you are already Continue reading
Kickstart with Cumulus VX
Cumulus LinuxThe first, true Linux Operating System for data center networking Cumulus Linux is a software-only complete operatingBack to Basics: How to Rack a Switch
This article is the first in a new mini-series where I will be doing semi-deep dives on some of the simpler, but often overlooked, aspects of network and datacenter engineering. Approx Reading Time: 3-4 Minutes It is quite commonplace these days to see equipment mounted incorrectly in a rack. Even though we are not mechanical […]
The post Back to Basics: How to Rack a Switch appeared first on Packet Pushers.
Polite Malware, Vegetarian Propaganda: This Week On The Internet
This Week On The Internet looks at some unusual IoT malware, why breaks are important, how to become a pro gamer, and vegetarian propaganda.
The post Polite Malware, Vegetarian Propaganda: This Week On The Internet appeared first on Packet Pushers.