April 2014
Intermediate to advanced
330 pages
8h 9m
English
book
OpenStack Operations Guide
by Tom Fifield, Diane Fleming, Anne Gentle, Lorin Hochstein, Jonathan Proulx, Everett Toews, Joe Topjian
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Chapter 4. Compute Nodes
In this chapter, we discuss some of the choices you need to consider when building out your compute nodes. Compute nodes form the resource core of the OpenStack Compute cloud, providing the processing, memory, network and storage resources to run instances.
Choosing a CPU
The type of CPU in your compute node is a very important choice. First, ensure that the CPU supports virtualization by way of VT-x for Intel chips and AMD-v for AMD chips.
Tip
Consult the vendor documentation to check for virtualization support. For Intel, read “Does my processor support Intel® Virtualization Technology?”. For AMD, read AMD Virtualization. Note that your CPU may support virtualization but it may be disabled. Consult your BIOS documentation for how to enable CPU features.
The number of cores that the CPU has also affects the decision. It’s common for current CPUs to have up to 12 cores. Additionally, if an Intel CPU supports hyperthreading, those 12 cores are doubled to 24 cores. If you purchase a server that supports multiple CPUs, the number of cores is further multiplied.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.