Book Image

Cloud Native with Kubernetes

By : Alexander Raul
Book Image

Cloud Native with Kubernetes

By: Alexander Raul

Overview of this book

Kubernetes is a modern cloud native container orchestration tool and one of the most popular open source projects worldwide. In addition to the technology being powerful and highly flexible, Kubernetes engineers are in high demand across the industry. This book is a comprehensive guide to deploying, securing, and operating modern cloud native applications on Kubernetes. From the fundamentals to Kubernetes best practices, the book covers essential aspects of configuring applications. You’ll even explore real-world techniques for running clusters in production, tips for setting up observability for cluster resources, and valuable troubleshooting techniques. Finally, you’ll learn how to extend and customize Kubernetes, as well as gaining tips for deploying service meshes, serverless tooling, and more on your cluster. By the end of this Kubernetes book, you’ll be equipped with the tools you need to confidently run and extend modern applications on Kubernetes.
Table of Contents (22 chapters)
1
Section 1: Setting Up Kubernetes
5
Section 2: Configuring and Deploying Applications on Kubernetes
11
Section 3: Running Kubernetes in Production
16
Section 4: Extending Kubernetes

Implementing ClusterIP

ClusterIP is a simple type of Service exposed on an internal IP inside the cluster. This type of Service is not reachable from outside of the cluster. Let's take a look at the YAML file for our Service:

clusterip-service.yaml

apiVersion: v1
kind: Service
metadata:
  name: my-svc
Spec:
  type: ClusterIP
  selector:
    app: web-application
    environment: staging
  ports:
    - name: http
      protocol: TCP
      port: 80
      targetPort: 8080

As with other Kubernetes resources, we have our metadata block with our name value. As you can recall from our discussion on DNS, this name value is how you can access your Service from elsewhere in the cluster. For this reason, ClusterIP is a great option for Services that only need to be accessed by other Pods within...