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Deploy any Docker Image to Kubernetes in 5 Minutes with Jetpack.io

In this tutorial, we'll grab the Nginx Docker image, configure it for Jetpack.io, and deploy it to Kubernetes – all in 5 minutes.

Prerequisites

Docker is required to package your backend as a container before deploying to the cloud.

If you don't already have Docker installed as part of your development environment, follow one of the guides below before returning to this quickstart:

kubectl, while not required, is a useful tool for inspecting and managing your deployments in Kubernetes. We recommend following the installation directions for your platform:

Initialize the project with Jetpack.io

Jetpack.io needs some initial configuration to understand the image's web process. We need only do this once per website.

  1. To install the Jetpack CLI, open a terminal and run

    curl https://get.jetpack.io -fsSL | bash

    Jetpack CLI works on Linux, macOS, and on Windows via WSL2.

  2. Login to Jetpack CLI:

    jetpack auth login

    Logging into Jetpack allows you to deploy to the Jetpack.io Kubernetes cluster. You can also run on your own cluster in your Azure, AWS, GCP, or private cloud account.

  3. Initialize the project for Jetpack:

    jetpack init

    This wizard interviews you and configures the Jetpack deployment strategy to match your application.

  4. Answer that Yes, this is a web server. This tells Jetpack that we want to accept inbound traffic.

    If we were building a scheduled cron job or a function that drained a queue, we could answer no.

  1. Finish the wizard, and Jetpack CLI automatically generates an appropriate jetconfig.yaml file. You should commit this to source control.

Customize the jetconfig.yaml file

Jetpack.io assumes your web server is running on port 8080 from inside a Docker container. In this section we'll customize the jetconfig.yaml file to host the Nginx image which runs on port 80.

  1. Open the jetconfig.yaml file in your favorite editor.

  2. Change the port line to 80.

  3. Add a new line specifying the Docker image:

        port: 80
    image: nginx:alpine

Deploy to Kubernetes using Jetpack.io

Now that the project is configured for Jetpack, deploying is really easy.

  1. Open a terminal in the directory with the Dockerfile and jetconfig.yaml file.

  2. Deploy to Kubernetes:

    jetpack dev

    Now Jetpack makes the deployment really simple. Automatically it will:

    • Build the Docker image
    • Push the image to a private registry
    • Schedule the necessary Kubernetes resources
    • Create a publicly routable URL to test the website
    • Setup port-forwarding from your local machine
    • Stream application logs back to the terminal
  3. Test the website:

    In the console output will be the publicly routable URL. Click this URL to view the web page.

    Jetpack also sets up port-forwarding, so you can also browse to http://localhost:8080/ to view the page.

Next Steps

It's easy to deploy any container image to Kubernetes with Jetpack.io. In this tutorial we scaffolded a website, configured it for Jetpack.io, and used Jetpack.io to deploy to Kubernetes. Jetpack.io is a great zero-DevOps solution for deploying to Kubernetes. Visit https://jetpack.io/docs/ to learn more and to start deploying your content to Kubernetes with ease.