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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Creating Role bindings and Cluster Role bindings

Role Bindings bind a User (or a Group, or a Service Account) to a Role (or a Cluster Role). Since John wants more visibility to our cluster, we'll create a Role Binding that will allow him to view (almost) all the objects in the default namespace. That should be a good start of our quest to give John just the right amount of privileges:

kubectl create rolebinding jdoe \
    --clusterrole view \
    --user jdoe \
    --namespace default \
kubectl get rolebindings  

We created a Role Binding called jdoe. Since the Cluster Role view already provides, more or less, what we need, we used it instead of creating a whole new Role.

The output of the latter command proved that the new Role Binding jdoe was indeed created.

This is a good moment to clarify that a Role Binding does not need to be used only with a...