Kubernetes Resource Management
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Kubernetes Resource Management

How it works What to do

About the Book

Over the last couple of years Kubernetes has arguably become the most popular infrastructure platform with a rapidly growing ecosystem.

This practical guide shows you how how to optimize the configuration of your Kubernetes cluster so that they run your workloads as efficiently as possible.

About the Authors

Christine Koppelt
Christine Koppelt

Christine Koppelt works as a Senior Consultant at innoQ Deutschland GmbH. Her focus is on the implementation and modernization of digitization projects for medium-sized companies. Her main interests are software architecture, infrastructure and data engineering.

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Christine Koppelt arbeitet als Senior Consultant bei der innoQ Deutschland GmbH. Ihr Schwerpunkt sind die Realisierung und Modernisierung von Digitalisierungsprojekten für mittelständische Unternehmen. Dabei beschäftigt sie sich vor allem mit den Themen Softwarearchitektur, Infrastruktur und Data Engineering.

Christopher Schmidt
Christopher Schmidt

Christopher is a senior consultant at INNOQ Switzerland and has been at home in software development for more than 20 years. During this time, he has successfully brought numerous software and modernization projects into production in various roles. His focus is on current front- and back-end technologies and highly scalable architectures. His passion belongs to NoSQL and Kubernetes.

Table of Contents

  • 1 Intro
    • 1.1 How does Kubernetes work?
    • 1.2 The Challenge
  • 2 Frequently Asked Questions
    • 2.1 What is a Completely Fair Scheduler?
    • 2.2 What is a cgroup?
    • 2.3 Who uses the Pod’s Resource Requests Setting?
    • 2.4 Do Resource Requests only Affect the Kubernetes Scheduler?
    • 2.5 Is there a General Difference between CPU and Memory?
    • 2.6 How do we Limit Container Memory?
    • 2.7 How do we Limit Container CPU?
    • 2.8 What is Overprovisioning?
    • 2.9 What is Overcommitment?
    • 2.10 How to Notice High Load?
    • 2.11 How to Respond to High Load?
    • 2.12 What is a Horizontal Pod Autoscaler?
    • 2.13 What is a Vertical Pod Autoscaler?
    • 2.14 What is a Cluster Autoscaler?
    • 2.15 What is a Cluster Proportional Autoscaler?
    • 2.16 Are Container Secure?
    • 2.17 What is a RuntimeClass?
    • 2.18 What is a Probe?
    • 2.19 What is a Pod Disruption Budget?
  • 3 Kubernetes Probes
    • 3.1 Phase and State of a Pod
    • 3.2 Readiness Probe
    • 3.3 Liveness Probe
    • 3.4 Startup Probe
  • 4 Recipes
    • 4.1 Avoid Receiving Traffic while Shutdown
    • 4.2 Scenario Spring Boot/JVM Applications
    • 4.3 Different Type of Workloads
    • 4.4 Planning your Cluster
    • 4.5 Deployment Recipes
    • 4.6 Cluster Sizing Recipes
    • 4.7 Cluster Segmentation
    • 4.8 Availability Rules
    • 4.9 Node Type Rules
    • 4.10 Pod Priorities

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