Ubuntu 14 Nginx 1.4 > 1.9 Upgrade

nginx_upgrade.sh

//stop nginx
sudo service nginx stop

//backup config
sudo cp /etc/nginx/nginx.conf /etc/nginx/nginx.conf.backup

//add apt repo
sudo add-apt-repository ppa:nginx/development && sudo apt-get update

//remove then upgrade nginx - choose N to prevent config overwrite (even though we made a backup)
sudo apt-get remove nginx nginx-common && sudo apt-get install nginx

//restart and reload
sudo service nginx restart && sudo service nginx reload

//add http2 support by simply changing
listen 443 ssl;

//to
listen 433 ssl http2;

//in all your sites server blocks