setup-lb.md

NGINX Load Balancer

For our K3s lab we will be deploying a very very...very simple Nginx Load Balancer. Again assuming here you are using alpine but just change apk add to apt install for Debian/Ubuntu or yum install for RHEL.

Step 1. Update your package manager and install Nginx

setup a static IP address by editing your /etc/network/interfaces file Then update your packages and install Nginx(see instructions in setup-alpine.md)

apk update && apk upgrade

apk add curl vim nginx nginx-mod-stream

Step 2. Configure NGINX

Edit the /etc/nginx/nginx.conf file so it has only the following content REPLACING THE IP ADDRESSES TO YOUR KB-SERVER-{1-3} IP ADDRESSES:

load_module /usr/lib/nginx/modules/ngx_stream_module.so;

events {}

stream {
  upstream k3s_servers {
    server 192.168.22.101:6443;
    server 192.168.22.102:6443;
    server 192.168.22.103:6443;
  }

  server {
    listen 6443;
    proxy_pass k3s_servers;
  }
}

Run this command so nginx automatically starts

rc-update add nginx default

Once that is done reboot