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How to use Kubernetes on GCP

What will you learn:-

What is Kubernetes

Kubernetes, aka, K8s is an open-source system for automating deployment, scaling, and managing containerized applications. It handles the work of scheduling containers onto a compute cluster and manages the workloads to ensure they run as the user intends.

Kubernetes Architecture

It has two major components:-


Using Kubernetes on GCP

GCP provides a managed and secured Kubernetes service called GKE (Google Kubernetes Engine) to create and maintain k8s clusters. GKE is GCP’s enterprise-grade platform to deploy containerized applications and services on kubernetes clusters.

Key Features of GKE:
  • 1. Enterprise-ready Kubernetes applications are directly available for deployment from Google Marketplace.
  • 2. Cluster auto-scaling as well as Horizontal and Vertical Pod auto-scaling based on changing workload requirements.
  • 3. Workload and network security provided by GKE sandbox as a second layer of defense between containerized workloads in addition to supporting the native Kubernetes Network Policy

Check out all the features provided by GKE here.

Cluster Creation on GKE:

Follow the steps below to create a cluster using GKE console:

  • Go to to access the GKE console.
  • Click the Create Cluster button.
  • Kubernetes
  • In the Cluster basics section, complete the following:
    • a. Enter the Name for your cluster. ( e.g. my-first-cluster )
    • b. For the Location type, select Zonal, and then select the desired zone for your cluster. ( e.g. us-central1-c)
    • c. Choose a Master Version. Let’s go with the default selection for “Static version” for now. (which is 1.14.10-gke.24 as of writing this article)
    • Kubernetes
  • From the navigation pane, under Node Pools, click default-pool.
    • a. Enter a Name for the default Node pool. (e.g. my-default-pool)
    • b. Choose the Node version for your nodes. (Let’s leave it to the default value which is 1.14.10-gke.24 as of this writing)
    • c. Enter the Number of nodes to create in the cluster. (Let’s have 4 nodes)
    • d. Leave other options as default.
    • Kubernetes
  • From the navigation pane, under Node Pools, click Nodes.
  • From the Image type drop-down list, select the desired node image. Let’s leave it to default which is Container-Optimized OS or “cos” as of this writing. You can read more about Node images on GKE here.
  • Choose the default Machine configuration to use for the instances. Read here for comparison of different machine types and the recommended types for different use cases.
  • The default machine type is n1-standard-1. Each machine type is billed differently. For machine type pricing information, refer to the machine type price sheet.
  • From the Boot disk type drop-down list, select the desired disk type.
  • Enter the Boot disk size.
  • Leave other fields as default and Click Create.
  • Kubernetes
  • After a few minutes, you will have your first k8s cluster running with your chosen configuration.
  • Kubernetes

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