OpenVPN Access Server Letsencrypt

first_run.ini

# OpenVPN Let's Encrypt first run config file
#https://loige.co/using-lets-encrypt-and-certbot-to-automate-the-creation-of-certificates-for-openvpn/

cert-name= 
authenticator = standalone
standalone-supported-challenges = tls-sni-01
non-interactive = True
rsa-key-size = 4096
email = "user@server.com"
domains = "vpn.server.com"
agree-tos = True
pre-hook = 'service openvpnas stop'
post-hook = 'service openvpnas start'

first_run.sh

#!/bin/sh
#https://certbot.eff.org/#ubuntutrusty-other
#https://loige.co/using-lets-encrypt-and-certbot-to-automate-the-creation-of-certificates-for-openvpn/

#Either run as sudo or sudo -s then run

#This is the directory from which the first run script will be ran. The first_run.ini file needs to be in the same directory
FIRST_RUN_DIR="/first__run_directory/"

apt-get update
apt-get install software-properties-common
add-apt-repository ppa:certbot/certbot
apt-get install certbot 
apt-get update

certbot certonly --config $FIRST_RUN_DIR && first_run.ini

#Update OpenVPN's db

/usr/local/openvpn_as/scripts/confdba -mk cs.ca_bundle -v "`cat /etc/letsencrypt/live/$DOMAIN/fullchain.pem`"
/usr/local/openvpn_as/scripts/confdba -mk cs.priv_key -v "`cat /etc/letsencrypt/live/$DOMAIN/privkey.pem`" > /dev/null
/usr/local/openvpn_as/scripts/confdba -mk cs.cert -v "`cat /etc/letsencrypt/live/$DOMAIN/cert.pem`"

renew.sh

#!/bin/sh
# https://www.sideras.net/lets-encrypt-https-certificates-for-openvpn-as-access-server/

#Update ini file name with the host name of the server

certbot renew --config vpn.server.ini

#Update OpenVPN's db

/usr/local/openvpn_as/scripts/confdba -mk cs.ca_bundle -v "`cat /etc/letsencrypt/live/$DOMAIN/fullchain.pem`"
/usr/local/openvpn_as/scripts/confdba -mk cs.priv_key -v "`cat /etc/letsencrypt/live/$DOMAIN/privkey.pem`" > /dev/null
/usr/local/openvpn_as/scripts/confdba -mk cs.cert -v "`cat /etc/letsencrypt/live/$DOMAIN/cert.pem`"

vpn.server.com.ini

# OpenVPN Let's Encrypt config file

# Variables
domains = vpn.server.com
email = user@server.com
cert-name = Cert_Name

# Non-volatile parameters

quiet = True
rsa-key-size - 4096
non-interactive = True
authenticator = standalone
standalone-supported-challenges = tls-sni-01
deploy-hook = 
agree-tos = True
keep-until-expiring = True