Book Image

DevOps with Kubernetes - Second Edition

By : Hideto Saito, Hui-Chuan Chloe Lee, Cheng-Yang Wu
Book Image

DevOps with Kubernetes - Second Edition

By: Hideto Saito, Hui-Chuan Chloe Lee, Cheng-Yang Wu

Overview of this book

Kubernetes has been widely adopted across public clouds and on-premise data centers. As we're living in an era of microservices, knowing how to use and manage Kubernetes is an essential skill for everyone in the IT industry. This book is a guide to everything you need to know about Kubernetes—from simply deploying a container to administrating Kubernetes clusters wisely. You'll learn about DevOps fundamentals, as well as deploying a monolithic application as microservices and using Kubernetes to orchestrate them. You will then gain an insight into the Kubernetes network, extensions, authentication and authorization. With the DevOps spirit in mind, you'll learn how to allocate resources to your application and prepare to scale them efficiently. Knowing the status and activity of the application and clusters is crucial, so we’ll learn about monitoring and logging in Kubernetes. Having an improved ability to observe your services means that you will be able to build a continuous delivery pipeline with confidence. At the end of the book, you'll learn how to run managed Kubernetes services on three top cloud providers: Google Cloud Platform, Amazon Web Services, and Microsoft Azure.
Table of Contents (14 chapters)

Kubeconfig

Kubeconfig is a file that you can use to switch multiple clusters by switching context. We can use kubectl config view to view the setting and the kubectl config current-context command to check the context you're currently using. The following is an example of a GCP cluster in a kubeconfig file:

# kubectl config view
apiVersion: v1
clusters:  
- cluster:
certificate-authority-data: DATA+OMITTED
server: https://35.0.0.200
name: gke_devops-with-kubernetes_us-central1-b_cluster
contexts:
- context:
cluster: gke_devops-with-kubernetes_us-central1-b_cluster
user: gke_devops-with-kubernetes_us-central1-b_cluster
name: gke_devops-with-kubernetes_us-central1-b_cluster
current-context: gke_devops-with-kubernetes_us-central1-b_cluster
kind: Config
preferences: {}
users:
- name: gke_devops-with-kubernetes_us-central1-b_cluster
user:
auth-provider:
config:
...