Book Image

The DevOps 2.3 Toolkit

By : Viktor Farcic
Book Image

The DevOps 2.3 Toolkit

By: Viktor Farcic

Overview of this book

Building on The DevOps 2.0 Toolkit, The DevOps 2.1 Toolkit: Docker Swarm, and The DevOps 2.2 Toolkit: Self-Sufficient Docker Clusters, Viktor Farcic brings his latest exploration of the DevOps Toolkit as he takes you on a journey to explore the features of Kubernetes. The DevOps 2.3 Toolkit: Kubernetes is a book in the series that helps you build a full DevOps Toolkit. This book in the series looks at Kubernetes, the tool designed to, among other roles, make it easier in the creation and deployment of highly available and fault-tolerant applications at scale, with zero downtime. Within this book, Viktor will cover a wide range of emerging topics, including what exactly Kubernetes is, how to use both first and third-party add-ons for projects, and how to get the skills to be able to call yourself a “Kubernetes ninja.” Work with Viktor and dive into the creation and exploration of Kubernetes with a series of hands-on guides.
Table of Contents (18 chapters)
The End
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Defining container memory and CPU resources

So far, we did not specify how much memory and CPU containers should use, nor what their limits should be. If we do that, Kubernetes' scheduler will have a much better idea about the needs of those containers, and it'll make much better decisions on which nodes to place the Pods and what to do if they start "misbehaving".

Let's take a look at a modified go-demo-2 definition:

cat res/go-demo-2-random.yml  

The specification is almost the same as those we used before. The only new entries are in the resources section.

The output, limited to the relevant parts, is as follows:

apiVersion: apps/v1beta2 
kind: Deployment 
  name: go-demo-2-db 
      - name: db 
        image: mongo:3.3