This script is based on the install script from André Schenkels (https://github.com/aschenkels-ictstudio/openerp-install-scripts) but goes a bit further and has been improved. This script will also give you the ability to define an xmlrpc_port in the .conf file that is generated under /etc/ This script can be safely used in a multi-odoo code base server because the default Odoo port is changed BEFORE the Odoo is started.

sudo wget https://raw.githubusercontent.com/sefirotjl/InstallScript/11.0/odoo_install.sh

There are a few things you can configure, this is the most used list:
OE_USER will be the username for the system user.
INSTALL_WKHTMLTOPDF set to False if you do not want to install Wkhtmltopdf, if you want to install it you should set it to True.
OE_PORT is the port where Odoo should run on, for example 8069.
OE_VERSION is the Odoo version to install, for example 11.0 for Odoo V11.
IS_ENTERPRISE will install the Enterprise version on top of 11.0 if you set it to True, set it to False if you want the community version of Odoo 11.
OE_SUPERADMIN is the master password for this Odoo installation.
DB_USER is the admin user for the Postgres installation.
DB_PASSWORD password for the admin user for the DB.
DB_HOST host to connect to the DB.

sudo chmod +x odoo_install.sh

sudo ./odoo_install.sh
service odoo-server status
service odoo-server start

sudo apt-get install nginx
sudo service nginx start

The certbot-auto wrapper script installs Certbot, obtaining some dependencies from your web server OS and putting others in a python virtual environment. You can download and run it as follows:

wget https://dl.eff.org/certbot-auto
sudo chmod a+x ./certbot-auto
sudo ./certbot-auto --nginx -d [Public Domain Name]

https://www.odoo.com/documentation/11.0/setup/deploy.html#https