November 2019
Intermediate to advanced
322 pages
7h 3m
English
Content preview from The DevOps 2.5 Toolkit
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Can we scale up too much or de-scale to zero nodes?
If we let Cluster Autoscaler do its "magic" without defining any thresholds, our cluster or our wallet might be at risk.
We might, for example, misconfigure HPA and end up scaling Deployments or StatefulSets to a huge number of replicas. As a result, Cluster Autoscaler might add too many nodes to the cluster. As a result, we could end up paying for hundreds of nodes, even though we need much less. Luckily, AWS, Azure, and GCP limit how many nodes we can have so we cannot scale to infinity. Nevertheless, we should not allow Cluster Autoscaler to go over some limits.
Similarly, there is a danger that Cluster Autoscaler will scale down to too few nodes. Having zero nodes is almost impossible ...
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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.