Cloud & Networking
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You're reading from  The KCNA Book

Product typeBook
Published inJun 2023
PublisherPackt
ISBN-139781835080399
Edition1st Edition
Tools
Kubernetes
Concepts
Containerization
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Author (1)
Nigel Poulton
Nigel Poulton
author image
Nigel Poulton

Nigel Poulton is a cloud-native subject matter expert who spends his life creating books and training videos on the latest cloud technologies. He is the author of best-selling books on Docker and Kubernetes and the most popular online training videos on the same topic. He is a Docker Captain. Prior to this, Nigel has held various infrastructure roles for large enterprises. When he is not playing with technology, he is dreaming about it. When he is not dreaming about it, he is reading and watching sci-fi. He wishes he lived in the future so he could explore spacetime, the universe, and tons of other mind-blowing stuff. He likes cars, football (soccer), and food. He has a fabulous wife and three children.
Read more about Nigel Poulton

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Autoscaling

Autoscaling is the ability of applications and infrastructure to automatically grow and shrink to meet demand.

Three things are vital for autoscaling to be truly cloud native.

  • Applications and infrastructure need to be able to scale
  • Scaling has to be automatic
  • Scaling has to be up and down

Kubernetes has the ability to scale applications up and down based on current workload. It can use simple metrics, such as CPU and memory consumption, or it can use application-specific metrics such as queue size and request response times.

A simple example might be the reporting microservice of an application. If business units are running end-of-year reports and the reporting microservice is experiencing a 10x increase in demand, Kubernetes can spin-up additional reporting containers to meet demand. When demand decreases, Kubernetes can terminate the additional containers. If the application is running on a public cloud, Kubernetes can also scale-up the infrastructure to help...

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The KCNA Book
Published in: Jun 2023Publisher: PacktISBN-13: 9781835080399
© 2023 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Nigel Poulton

Nigel Poulton is a cloud-native subject matter expert who spends his life creating books and training videos on the latest cloud technologies. He is the author of best-selling books on Docker and Kubernetes and the most popular online training videos on the same topic. He is a Docker Captain. Prior to this, Nigel has held various infrastructure roles for large enterprises. When he is not playing with technology, he is dreaming about it. When he is not dreaming about it, he is reading and watching sci-fi. He wishes he lived in the future so he could explore spacetime, the universe, and tons of other mind-blowing stuff. He likes cars, football (soccer), and food. He has a fabulous wife and three children.
Read more about Nigel Poulton

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