Book Image

Kubernetes - A Complete DevOps Cookbook

By : Murat Karslioglu
Book Image

Kubernetes - A Complete DevOps Cookbook

By: Murat Karslioglu

Overview of this book

Kubernetes is a popular open source orchestration platform for managing containers in a cluster environment. With this Kubernetes cookbook, you’ll learn how to implement Kubernetes using a recipe-based approach. The book will prepare you to create highly available Kubernetes clusters on multiple clouds such as Amazon Web Services (AWS), Google Cloud Platform (GCP), Azure, Alibaba, and on-premises data centers. Starting with recipes for installing and configuring Kubernetes instances, you’ll discover how to work with Kubernetes clients, services, and key metadata. You’ll then learn how to build continuous integration/continuous delivery (CI/CD) pipelines for your applications, and understand various methods to manage containers. As you advance, you’ll delve into Kubernetes' integration with Docker and Jenkins, and even perform a batch process and configure data volumes. You’ll get to grips with methods for scaling, security, monitoring, logging, and troubleshooting. Additionally, this book will take you through the latest updates in Kubernetes, including volume snapshots, creating high availability clusters with kops, running workload operators, new inclusions around kubectl and more. By the end of this book, you’ll have developed the skills required to implement Kubernetes in production and manage containers proficiently.
Table of Contents (12 chapters)

Configuring Pod Security Policies

Pod Security Policies (PSP) are used on Kubernetes clusters to enable granular authorization of pod creation and to control security aspects of pods. PodSecurityPolicy objects define the conditions for a pod to be accepted into the cluster and run as expected.

In this section, we will cover the recreation and configuration of PSPs on Kubernetes.

Getting ready

Make sure you have an RBAC-enabled Kubernetes cluster ready (since Kubernetes 1.6, RBAC is enabled by default) and kubectl and helm configured to manage the cluster resources.

Clone the k8sdevopscookbook/src repository to your workstation to use the manifest files in the chapter9 directory, as follows:

$ git clone
$ cd src/chapter9/psp

Verify if PodSecurityPolicy needs to be enabled on your cluster by running the kubectl get psp command. If you get a message stating the server doesn't have a resource type "podSecurityPolicies"., then PSP...