Kubernetes Project Setup Guide

This guide provides steps to set up your Kubernetes project, including installing Certbot, obtaining SSL certificates, creating Kubernetes secrets, and configuring your deployment.

Prerequisites

• Domain names for your control machine and load balancer.
• Kubernetes and kubectl installed and configured.

Steps

0. Point DDNS

Ensure your domains' DDNS are pointing correctly:

Control Machine: Point DDNS to your control machine. (A)

1. Install Certbot

To obtain SSL certificates for your domains, first install Certbot:

sudo yum install certbot

2. Obtain SSL Certificates

Run Certbot to obtain SSL certificates for your domains:

sudo certbot certonly

3. Copy Certificates to Your Project

Switch to the root user and navigate to the Let's Encrypt live directory:

sudo su
cd /etc/letsencrypt/live

Find your domain folder, then copy the certificates to your project directory:

cd [your folder]
cp fullchain.pem /home/ec2-user/Kubernetes-Project/kubeproject/certs/
cp privkey.pem /home/ec2-user/Kubernetes-Project/kubeproject/certs/

4. Create Kubernetes Secret

Change to your project certificates directory and create a Kubernetes secret:

cd /home/ec2-user/Kubernetes-Project/kubeproject/certs
sudo kubectl create secret generic danielp-secret --from-file=privkey.pem --from-file=fullchain.pem

5. Set Permissions

Change the ownership of the copied certificate files to the ec2-user:

sudo chown ec2-user:ec2-user fullchain.pem privkey.pem

6. Update Configurations

ConfigMap: Update your ConfigMap to include your domains.
Deployment: Update your deployment configuration to reference the created secret.

7. Point DDNS

Ensure your domains' DDNS are pointing correctly:

Delete the previous name registries (A)
Load Balancer: Point DDNS to your AWS load balancer. (CNAME)

Bonus

1. Cleaning when you mess it up:

kubectl delete --all all -n default

2. Check your logs !

kubectl logs
kubectl describe