November 2019
Intermediate to advanced
322 pages
7h 3m
English
Content preview from The DevOps 2.5 Toolkit
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Using HorizontalPodAutoscaler without metrics adapter
If we do not create a metrics adapter, Metrics Aggregator only knows about CPU and memory usage related to containers and nodes. To make things more complicated, that information is limited only to the last few minutes. Since HPA is just concerned about Pods and containers inside them, we are limited to only two metrics. When we create an HPA, it will scale or de-scale our Pods if memory or CPU consumption of the containers that constitute those Pods is above or below predefined thresholds.
Metrics Server periodically fetches information (CPU and memory) from Kubelets running inside worker nodes.
Those metrics are passed to Metrics Aggregator which, in this scenario, does not add any additional ...
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.