Docker images consist of applications with their dependencies and they are ready to be launched at scale. In addition, they are suitable to run on cloud servers and data centers because of their lightweight architecture. Docker images are created from the steps defined in Dockerfile, where each instruction forms a layer on top of the previous one. This layered design of images is the prominent feature that makes Docker images lightweight and quick to start. The underlying technology of layered Docker images is the union file system (UFS). The UFS can be considered as stackable layers of files and directories. Each layer is traceable back to its parent layer in a tree structure so that different branches can share the same root. In other words, if two container images have the same base image of ubuntu:18.10, this base image will not be replicated twice; Docker Engine will reuse the same base image to run these two containers. In the next sections, we will present Dockerfiles...
Introduction to DevOps with Kubernetes
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Introduction to DevOps with Kubernetes
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Overview of this book
Kubernetes and DevOps are the two pillars that can keep your business at the top by ensuring high performance of your IT infrastructure.
Introduction to DevOps with Kubernetes will help you develop the skills you need to improve your DevOps with the power of Kubernetes. The book begins with an overview of Kubernetes primitives and DevOps concepts. You'll understand how Kubernetes can assist you with overcoming a wide range of real-world operation challenges. You will get to grips with creating and upgrading a cluster, and then learn how to deploy, update, and scale an application on Kubernetes. As you advance through the chapters, you’ll be able to monitor an application by setting up a pod failure alert on Prometheus. The book will also guide you in configuring Alertmanager to send alerts to the Slack channel and trace down a problem on the application using kubectl commands.
By the end of this book, you’ll be able to manage the lifecycle of simple to complex applications on Kubernetes with confidence.
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Current Title:
Introduction to DevOps with Kubernetes
Table of Contents (11 chapters)
Preface
Free Chapter
Chapter 1: Introduction to DevOps
Chapter 2: Introduction to Microservices and Containers
Chapter 3: Introduction to Kubernetes
Chapter 4: Creating a Kubernetes Cluster
Chapter 5: Deploy an Application to Kubernetes
Chapter 6: Configuration and Storage Management in Kubernetes
Chapter 7: Updating and Scaling an Application in Kubernetes
Chapter 8: Troubleshooting Applications in Kubernetes
Chapter 9: Monitoring Applications in Kubernetes
Appendix
Customer Reviews