By Rickramsey-Oracle on Feb 13, 2015
Before software engineers got so freakin' smart, we used to pay a special type of sysadmin to fiddle with the cables and switches at the back of our racks. They were mean, they were hunch-backed, and their fingers were stained with nicotine.
Those were the good old days. Today, network administrators wash their clothes and and sit at desks. And they use something called "software defined networking." I looked it up in the Urban Dictionary, but there was no listing for it. Which is just as well because if you ask me ...
Software Defined Networking = voodoo magic
A Little Bit About Software Defined Networking
Software Defined Networking is the equivalent of doing your homework the week before it's due. I mean, who does that? Well, the Solaris engineers at Oracle do, for starters. Talk about annoying! They started this trend back in the early days of Oracle Solaris 11. Instead of visiting Rufus in the basement server room, they designed this infrastructure that makes it possible for them to put dibs on networking resources from the comfort of the local Starbucks.
In other words, instead of Rufus yanking cables out of one box and hooking them up to another, you can simply change the cable routing by keyboard, so to speak. And assign them to virtual compute nodes. And configure all kinds of aspects about each network, including Service Level Agreements, an implement of Trotskyist-Leninist Totalitarianism if there ever was one. All without waking Rufus.
Orgad Kimchi, our fearless explorer of real-world Solaris, horsed around with not only the software defined networking capabilities of Oracle Solaris 11, but its latest features, which, in his words provide "greater application agility without the added overhead of expensive network hardware." The SDN features in Oracle Solaris 11.2 now:
- Enable application-driven, multitenant cloud virtual networking across a completely distributed set of systems
- Allow network service-level agreements (SLAs) at the application level
- Provide cloud-readiness, thanks to the OpenStack distribution include in Oracle Solaris 11
- Integrate tightly with Oracle Solaris Zones.
In Oracle Solaris 11.2
Orgad starts by walking you through the steps to set up SSH authentication and the Elastic Virtual Switch controller. Then he shows you how to configure both compute nodes, the four Solaris zones, and their virtual networks. He wraps up by showing you how to test the entire configuration to make sure it's working the way you want. Orgad writes from real-world experience, so you can trust his recommendations.
About the Photographs
I snapped the picture of the lamp at Stovepipe Wells, and the picture of Linda Lu, my 2008 Harley Davidson Softail Custom, while riding through Death Valley, California in the Spring of 2014. To get a better feel for the strange vastness of Death Valley, click on the image below to go to Wordpress, then click on the Wordpress image to enlarge it.
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