haproxy.cfg

# just insure that the haproxy cfg file has these settings
frontend https-cluster
  bind *:80
  bind *:443 ssl crt /etc/ssl/private
  
  acl letencrypt_challenge_request path_beg /.well-known/acme-challenge
  use_backend letsencrypt_challenge_server if letsencrypt_challenge_request
  
backend letsencrypt_challenge_server
  server letsencrypt 127.0.0.1:3313 # port is irrelevant as long as it doesn't match one of the bind ports above and is the same as in the --http-01-port= below

issue_new_cert.sh

# --------------------------------------------------------------------------------------------
# HAProxy Automatic Certificate Issuer
# --------------------------------------------------------------------------------------------
# Automatically issues a new certificate for HAProxy installations by first creating a 
# certificate with certbot without interaction.  Then, copies the combined certificate and 
# private key to the default directory (/etc/ssl/private)
# 
# --------------------------------------------------------------------------------------------
# Author Info
# --------------------------------------------------------------------------------------------
# Name :: Tim Kennell Jr. ~ tikenn
#
# --------------------------------------------------------------------------------------------
# Config
# --------------------------------------------------------------------------------------------
# 
# PRIMARY_DOMAIN_NAME	:: The first domain listed after the script treated as the cert name
# $@			:: Remaining domain names added to the certificate
#
# ~ tikenn

if [[ -z $1 ]]; then
	echo
	echo "A domain name is required as the first parameter of the script."
	echo "Multiple space-separated domain names may be supplied."
	echo
	exit 1
fi

PRIMARY_DOMAIN_NAME=$1

DOMAIN_STRING=""
for i in ${@:1}; do
	DOMAIN_STRING+="-d $i "
done

certbot certonly --standalone $DOMAIN_STRING --non-interactive --agree-tos --email tikennprogrammer@gmail.com --http-01-port=3313 

if [[ "$?" = 0 ]]; then
	cat /etc/letsencrypt/live/$PRIMARY_DOMAIN_NAME/fullchain.pem /etc/letsencrypt/live/$PRIMARY_DOMAIN_NAME/privkey.pem > /etc/ssl/private/$PRIMARY_DOMAIN_NAME.ssl-unified.pem
	systemctl restart haproxy
	exit 0
else
	echo "Certificate could not be issued"
	exit 1
fi