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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Container networking

Containers and microservices bring all of the following networking challenges.

  • Increased east-west traffic
  • Service discovery
  • Tracing requests
  • IP churn
  • Security

East-west network traffic is jargon for containers in the same application talking to each other on the same networks. The other type of traffic flow is called north-south and is applications talking to external services. Consider a simple example of a microservices application with a web front-end service and a shopping cart service. Traffic between the front-end and the shopping cart containers is east-west traffic on the same network. The traffic between the front-end and external client, such as a customer’s mobile phone app, is north-south and over untrusted networks such as the internet.

Microservices architectures split complex applications into lots of small applications that all talk to each other over the network. This massively increases east-west traffic and requires traffic...

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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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