Table of Contents

1. Challenge

   Install Nginx on the load balancer server.

   You can install Nginx like this:

   sudo apt-get install -y nginx
   sudo systemctl enable nginx
   

2. Challenge

   Configure Nginx to balance Kubernetes API traffic across the two controllers.

   Do the following to configure the Nginx load balancer:

   sudo mkdir -p /etc/nginx/tcpconf.d
   sudo vi /etc/nginx/nginx.conf
   

   Add the following configuration at the bottom of nginx.conf:

   include /etc/nginx/tcpconf.d/*;
   

   Create a config file to configure Kubernetes API load balancing:

   cat << EOF | sudo tee /etc/nginx/tcpconf.d/kubernetes.conf
   stream {
       upstream kubernetes {
           server <controller 0 private ip>:6443;
           server <controller 1 private ip>:6443;
       }
   
       server {
           listen 6443;
           listen 443;
           proxy_pass kubernetes;
       }
   }
   EOF
   

   Reload the Nginx configuration:

   sudo nginx -s reload
   

   You can verify that everything is working by making a request to the Kubernetes API through the load balancer:

   curl -k https://localhost:6443/version
   

   This request should return some Kubernetes version data.