How to renew SSL certificate with certbot for HAProxy

#!/bin/bash

certbot certonly --force-renew \
  --dns-cloudflare \
  --dns-cloudflare-credentials /root/.secrets/cloudflare.ini \
  --dns-cloudflare-propagation-seconds 60 \
  -d example.com

# create backup of exist certificate
cp /etc/ssl/example.com/example.com.pem /etc/ssl/example.com/example.com.pem_`date +%Y-%m-%d`

# change directory and create certificate
cd /etc/letsencrypt/live/example.com/
cat fullchain.pem privkey.pem > /etc/ssl/example.com/example.com.pem

haproxy -c -V -f /etc/haproxy/haproxy.cfg

if [[ $? == 0 ]]; then
    echo "Restarting HAProxy service..."
    systemctl restart haproxy.service
else
    echo "Cannot restart HAProxy service because test configuration is failed..."
fi