Skip to Main Content
The DevOps 2.5 Toolkit
book

The DevOps 2.5 Toolkit

by Viktor Farcic
November 2019
Intermediate to advanced content levelIntermediate to advanced
322 pages
7h 3m
English
Packt Publishing
Content preview from The DevOps 2.5 Toolkit

Comparing actual resource usage with defined requests

If we define container resources inside a Pod and without relying on actual usage, we are just guessing how much memory and CPU we expect a container to use. I'm sure that you already know why guessing, in the software industry, is a terrible idea, so I'll focus on Kubernetes aspects only.

Kubernetes treats Pods with containers that do not have specified resources as the BestEffort Quality of Service (QoS). As a result, if it ever runs out of memory or CPU to serve all the Pods, those are the first to be forcefully removed to leave space for others. If such Pods are short lived as, for example, those used as one-shot agents for continuous delivery processes, BestEffort QoS is not a bad ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

The DevOps 2.2 Toolkit

The DevOps 2.2 Toolkit

Viktor Farcic

Publisher Resources

ISBN: 9781838647513Supplemental Content