Coozila! Small Business Help

Generating a certificate with Let's Encrypt

Let’s Encrypt is a free, automated, and open certificate authority (CA) that allows website owners to install digital certificates free of charge.

Follow the steps below to install ACME client and generate the SSL certificate.

ssh username@hostname
git clone
cd acme-client
php -r "copy('', 'composer-setup.php');"; php composer-setup.php; php -r "unlink('composer-setup.php');"; php composer.phar install --no-dev
php bin/acme setup --server letsencrypt --email

php bin/acme issue --domains --path /home/username/public_html:/home/username/public_html --server letsencrypt

# Cert Generated at
cd /home/username/acme-client/data/certs/

You can check the certificate validity using this command:

php bin/acme check --name --server letsencrypt
Certificate is valid until 18.04.2017

The command below can be used to reissue the certificate:

php acme-client/bin/acme issue --domains --path /home/username/public_html:/home/username/public_html --server letsencrypt

You may setup a cron job to renew the certificate automatically.


You will need to replace, and username with your actual domain name, email address and username.