How to Install Kubernetes on OpenBSD

Kubernetes is an open-source platform designed for managing containerized applications. It is used in production environments to automate the deployment, scaling, and management of software applications. In this tutorial, we will guide you through the process of installing Kubernetes on OpenBSD.

Prerequisites

Before we begin, make sure that your OpenBSD environment meets the following requirements:

  • A recent version of OpenBSD
  • A running network connection
  • A significant amount of free disk space
  • Root access

Step 1: Install Required Dependencies

Kubernetes requires several dependencies to be installed on your system. Here are the commands to install them:

$ sudo pkg_add curl gcc git gmake openssl perl rsync
$ sudo pkg_add e2fsprogs

Step 2: Install Go Language

Kubernetes requires Go programming language to be installed. OpenBSD does not include pre-built packages for Go, so we will need to build it from source. Follow these steps to build and install Go:

  1. Download Go from the official website:

    $ curl https://golang.org/dl/go1.15.7.src.tar.gz --output ~/go1.15.7.src.tar.gz

  2. Extract the downloaded archive:

    $ tar -C /usr/local -xzf ~/go1.15.7.src.tar.gz

  3. Build and install Go:

    $ cd /usr/local/go/src
$ sudo ./all.bash

  4. Set environment variables for Go:

    $ echo 'export GOPATH=$HOME/go' >> ~/.profile
$ echo 'export PATH=$PATH:/usr/local/go/bin:$GOPATH/bin' >> ~/.profile
$ . ~/.profile

Step 3: Install Kubernetes

Now we will install Kubernetes. Follow these steps to build and install Kubernetes:

  1. Clone the Kubernetes repository:

    $ mkdir -p ~/go/src/k8s.io
$ git clone https://github.com/kubernetes/kubernetes.git ~/go/src/k8s.io/kubernetes

  2. Checkout to the stable version:

    $ cd ~/go/src/k8s.io/kubernetes
$ git checkout -b v1.20.1 tags/v1.20.1

  3. Build Kubernetes:

    $ ./hack/build-go.sh

  4. Install Kubernetes:

    $ cd ~/go/src/k8s.io/kubernetes/cluster/openbsd
$ sudo ./install_kubernetes.sh

Step 4: Verify Installation

After installation, verify the Kubernetes cluster is running by executing the following command:

$ kubectl get nodes

This command should output a list of nodes in the cluster.

Congratulations! You have successfully installed Kubernetes on OpenBSD. You can now start deploying your containerized applications on the Kubernetes cluster.