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Kubernetes Scaffolding Script

What is this?

While experimenting with Kubernetes on DigitalOcean, I found myself spinning up clusters fairly often to try new things. I got very familiar with the process of doing this and decided to write a guide covering how to set up a barebones cluster, along with common tools that I personally use. This bash script project is an extension of that guide, automating the process of setting up a cluster on DigitalOcean and installing a subset of software to get fresh cluster up and running quickly.

What are the requirements?

  • MacOS Mojave (Untested on other Unix based systems, or other versions of MacOS)
  • Homebrew
  • Kubectl
  • Helm
  • Doctl

What does it install and configure?

The script will first and foremost check for the proper dependencies. These dependencies include:

  • Homebrew
  • Kubectl
  • Helm
  • Doctl

If these dependencies are not found on the system, the script will attempt to install them for you.

Note: The Homebrew installation may take a considerable amount of time if the X Code Development Tools are not found on your system.

Once these dependencies are present the script will configure the following:

  • Creating a Kubernetes cluster on DigitalOcean
  • Copying a kubeconfig file to your local machine (If opted against creating a cluster)
  • Initializing Helm/Tiller
  • Installing an Nginx Ingress
  • Installing Cert Manager
  • Installing and configuring Jenkins
  • Installing and configuring Harbor
  • Installing Kubernetes Dashboard

Note: Setting up the Ingress WILL configure a DigitalOcean Load Balancer. This is a service that DigitalOcean charges for, so keep that in mind.

How do I use this script?

Clone the repository onto your local machine.

git clone https://github.com/DefrostedTuna/kubernetes-scaffolding.git && cd kubernetes-scaffolding

Make the script executable.

chmod +x init-cluster.sh && chmod -R +x scripts

Run the script.

./init-cluster.sh

The script will guide you through the setup process, prompting for input when necessary. Follow the instructions in the script and you'll be good to go!