Set up for nginx loadbalancer

provision-loadbalancer.sh

#!/bin/bash

echo 'Starting Provision: loadbalancer'
sudo apt-get update
sudo apt-get install -y nginx
sudo service nginx stop
sudo rm -rf /etc/nginx/sites-available/default
sudo rm -rf /etc/nginx/sites-enabled/default
sudo touch /etc/nginx/sites-enabled/default
echo "upstream backend {
        server 192.168.30.11 max_fails=2 fail_timeout=20s;
        server 192.168.30.12 weight=2 max_fails=2 fail_timeout=20s;
}
server {
        listen 80 default_server;
        # listen [::]:80 default_server ipv6only=on;
        root /usr/share/nginx/html;
        index index.html index.htm;
        server_name $1 www.$1;
        location / {
                proxy_pass http://backend;
        }
        
        location ~* \.(gif|jpg|png)$ {
                expires 30d;
                add_header Cache-Control 'public';
        }
}" >> /etc/nginx/sites-enabled/default
sudo service nginx start
echo "Machine: loadbalancer" >> /usr/share/nginx/html/index.html
echo '*************** Provision loadbalancer complete ***************'