project: Start the Cluster & Install Helm

Tags kubernetes
Hard Prerequisites
IMPORTANT: Please review these prerequisites, they include important information that will help you with this content.
  • K8S: Manual App Deployment – Project Overview
    • Soft Prerequisites
  • K8S: K3s Quick Start

    • Let’s use a fresh EC2 instance and install K3s and Helm.

    Normally you would install the necessary tools to manage the Kubernetes cluster and its environment – kubectl, helm and fluxcd – on your machine and communicate with the cluster remotely. Here we will install them on the EC2 instance to make sure everyone has the same environment.

    Use the command bellow to install K3ds with Traefik disabled. We will install nginx-ingress later with a Helm chart.

    # installs k3s
sudo curl -sfL https://get.k3s.io | INSTALL_K3S_EXEC="server --disable=traefik" sh -

# gives read access to the `k3s.yaml` file
# which contains the credentials to access the cluster
sudo chown ubuntu:ubuntu /etc/rancher/k3s/k3s.yaml
sudo chmod 600 /etc/rancher/k3s/k3s.yaml

    Install Helm on the EC2 instance:

    # installs helm
sudo snap install helm --classic

# sets the environment variable used by Helm to access the cluster
export KUBECONFIG=/etc/rancher/k3s/k3s.yaml

# lists the charts, should be empty
helm list

    Add the environment variable to the .bashrc file to be defined every time you login.

    echo "export KUBECONFIG=/etc/rancher/k3s/k3s.yaml" >> ~/.bashrc
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