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Kubernetes Engine: Qwik Start

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Kubernetes Engine: Qwik Start

30 minutes 1 Credit

GSP100

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Overview

Google Kubernetes Engine (GKE) provides a managed environment for deploying, managing, and scaling your containerized applications using Google infrastructure. The Kubernetes Engine environment consists of multiple machines (specifically Compute Engine instances) grouped to form a container cluster. In this lab, you get hands-on practice with container creation and application deployment with GKE.

Cluster orchestration with Google Kubernetes Engine

Google Kubernetes Engine (GKE) clusters are powered by the Kubernetes open source cluster management system. Kubernetes provides the mechanisms through which you interact with your container cluster. You use Kubernetes commands and resources to deploy and manage your applications, perform administrative tasks, set policies, and monitor the health of your deployed workloads.

Kubernetes draws on the same design principles that run popular Google services and provides the same benefits: automatic management, monitoring and liveness probes for application containers, automatic scaling, rolling updates, and more. When you run your applications on a container cluster, you're using technology based on Google's 10+ years of experience with running production workloads in containers.

Kubernetes on Google Cloud

When you run a GKE cluster, you also gain the benefit of advanced cluster management features that Google Cloud provides. These include:

Now that you have a basic understanding of Kubernetes, you will learn how to deploy a containerized application with GKE in less than 30 minutes. Follow the steps below to set up your lab environment.

Setup and requirements

Before you click the Start Lab button

Read these instructions. Labs are timed and you cannot pause them. The timer, which starts when you click Start Lab, shows how long Google Cloud resources will be made available to you.

This hands-on lab lets you do the lab activities yourself in a real cloud environment, not in a simulation or demo environment. It does so by giving you new, temporary credentials that you use to sign in and access Google Cloud for the duration of the lab.

What you need

To complete this lab, you need:

  • Access to a standard internet browser (Chrome browser recommended).
  • Time to complete the lab.

Note: If you already have your own personal Google Cloud account or project, do not use it for this lab.

Note: If you are using a Chrome OS device, open an Incognito window to run this lab.

How to start your lab and sign in to the Google Cloud Console

  1. Click the Start Lab button. If you need to pay for the lab, a pop-up opens for you to select your payment method. On the left is a panel populated with the temporary credentials that you must use for this lab.

    Open Google Console

  2. Copy the username, and then click Open Google Console. The lab spins up resources, and then opens another tab that shows the Sign in page.

    Sign in

    Tip: Open the tabs in separate windows, side-by-side.

  3. In the Sign in page, paste the username that you copied from the left panel. Then copy and paste the password.

    Important: You must use the credentials from the left panel. Do not use your Google Cloud Training credentials. If you have your own Google Cloud account, do not use it for this lab (avoids incurring charges).

  4. Click through the subsequent pages:

    • Accept the terms and conditions.
    • Do not add recovery options or two-factor authentication (because this is a temporary account).
    • Do not sign up for free trials.

After a few moments, the Cloud Console opens in this tab.

Activate Cloud Shell

Cloud Shell is a virtual machine that is loaded with development tools. It offers a persistent 5GB home directory and runs on the Google Cloud. Cloud Shell provides command-line access to your Google Cloud resources.

In the Cloud Console, in the top right toolbar, click the Activate Cloud Shell button.

Cloud Shell icon

Click Continue.

cloudshell_continue.png

It takes a few moments to provision and connect to the environment. When you are connected, you are already authenticated, and the project is set to your PROJECT_ID. For example:

Cloud Shell Terminal

gcloud is the command-line tool for Google Cloud. It comes pre-installed on Cloud Shell and supports tab-completion.

You can list the active account name with this command:

gcloud auth list

(Output)

ACTIVE: * ACCOUNT: student-01-xxxxxxxxxxxx@qwiklabs.net To set the active account, run: $ gcloud config set account `ACCOUNT`

You can list the project ID with this command:

gcloud config list project

(Output)

[core] project = <project_ID>

(Example output)

[core] project = qwiklabs-gcp-44776a13dea667a6

Task 1: Set a default compute zone

Your compute zone is an approximate regional location in which your clusters and their resources live. For example, us-central1-a is a zone in the us-central1 region.

  1. To set your default compute zone to us-central1-a, start a new session in Cloud Shell, and run the following command:

    gcloud config set compute/zone us-central1-a

    Expected output (Do not copy):

    Updated property [compute/zone].

Task 2: Create a GKE cluster

A cluster consists of at least one cluster master machine and multiple worker machines called nodes. Nodes are Compute Engine virtual machine (VM) instances that run the Kubernetes processes necessary to make them part of the cluster.

Note: Cluster names must start with a letter and end with an alphanumeric, and cannot be longer than 40 characters.
  1. To create a cluster, run the following command, replacing [CLUSTER-NAME] with the name you choose for the cluster (for example:my-cluster).

    gcloud container clusters create [CLUSTER-NAME]

    You can ignore any warnings in the output. It might take several minutes to finish creating the cluster.

    Expected output (Do not copy):

    NAME: my-cluster LOCATION: us-central1-a MASTER_VERSION: 1.21.5-gke.1302 MASTER_IP: 34.69.232.119 MACHINE_TYPE: e2-medium NODE_VERSION: 1.21.5-gke.1302 NUM_NODES: 3 STATUS: RUNNING

Click Check my progress to verify the objective. Create a GKE cluster

Task 3: Get authentication credentials for the cluster

After creating your cluster, you need authentication credentials to interact with it.

  1. To authenticate the cluster, run the following command, replacing [CLUSTER-NAME] with the name of your cluster:

    gcloud container clusters get-credentials [CLUSTER-NAME]

    Expected output (Do not copy):

    Fetching cluster endpoint and auth data. kubeconfig entry generated for my-cluster.

Task 4: Deploy an application to the cluster

You can now deploy a containerized application to the cluster. For this lab, you'll run hello-app in your cluster.

GKE uses Kubernetes objects to create and manage your cluster's resources. Kubernetes provides the Deployment object for deploying stateless applications like web servers. Service objects define rules and load balancing for accessing your application from the internet.

  1. To create a new Deployment hello-server from the hello-app container image, run the following kubectl create command:

    kubectl create deployment hello-server --image=gcr.io/google-samples/hello-app:1.0

    Expected output (Do not copy):

    deployment.apps/hello-server created

    This Kubernetes command creates a Deployment object that represents hello-server. In this case, --image specifies a container image to deploy. The command pulls the example image from a Container Registry bucket. gcr.io/google-samples/hello-app:1.0 indicates the specific image version to pull. If a version is not specified, the latest version is used.

    Click Check my progress to verify the objective. Create a new Deployment: hello-server

  2. To create a Kubernetes Service, which is a Kubernetes resource that lets you expose your application to external traffic, run the following kubectl expose command:

    kubectl expose deployment hello-server --type=LoadBalancer --port 8080

    In this command:

    • --port specifies the port that the container exposes.
    • type="LoadBalancer" creates a Compute Engine load balancer for your container.

    Expected output (Do not copy):

    service/hello-server exposed
  3. To inspect the hello-server Service, run kubectl get:

    kubectl get service

    Expected output (Do not copy):

    NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE hello-server loadBalancer 10.39.244.36 35.202.234.26 8080:31991/TCP 65s kubernetes ClusterIP 10.39.240.1 <none> 433/TCP 5m13s

    Note: It might take a minute for an external IP address to be generated. Run the previous command again if the EXTERNAL-IP column status is pending.

  4. To view the application from your web browser, open a new tab and enter the following address, replacing [EXTERNAL IP] with the EXTERNAL-IP for hello-server.

    http://[EXTERNAL-IP]:8080

    Expected output:

    output.png

    Click Check my progress to verify the objective. Create a Kubernetes Service

Task 5: Deleting the cluster

  1. To delete the cluster, run the following command:

    gcloud container clusters delete [CLUSTER-NAME]
  2. When prompted, type Y to confirm.

    Deleting the cluster can take a few minutes. For more information on deleted GKE clusters, view the documentation.

    Click Check my progress to verify the objective. Delete the cluster

Congratulations!

You have just deployed a containerized application to Kubernetes Engine!

Finish Your Quest

completion badge completion badge vm-migration kubernetes completion

Continue your Baseline: Infrastructure, Google Cloud Essentials, Kubernetes in Google Cloud, or VM Migration Quest. A Quest is a series of related labs that form a learning path. Completing this Quest earns you the badge above to recognize your achievement. You can make your badge (or badges) public and link to them in your online resume or social media account. Enroll in a Quest and get immediate completion credit for taking this lab. See other available Qwiklabs Quests.

Next steps/learn more

This lab is part of a series of labs called Qwik Starts. These labs are designed to give you some experience with the many features available with Google Cloud. Search for "Qwik Starts" in the lab catalog to find the next lab you'd like to take!

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Manual Last Updated November 24, 2021
Lab Last Tested November 24, 2020

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