Creating SSL Certificates
This tutorial briefly covers creating new SSL certificates for your panel and daemon using LetsEncrypt™. To begin, we will be installing certbot, a simple script that will automatically renew our certificates and allow much cleaner creation of them. The command below is for Ubuntu distributions, but you can always check Certbot's official site for installation instructions.
sudo apt-get install letsencrypt
Creating a Certificate
After installing certbot, we need to then generate a certificate. There are a couple ways to do that, but the easiest is to have letsencrypt spin-up a temporary web-server to do this. In order for this to work, you will first need to stop NGINX or Apache.
Then, in the command below, you should replace
example.com with the domain you would like to generate a certificate
for. If you have multiple domains you would like certificates for, simply add more
-d anotherdomain.com flags to the
command. You can also look into generating a wildcard certificate but that is not covered in this tutorial.
Once you've generated the certificate you should start NGINX or Apache again to have the certificates applied (assuming that you've already configured the webservers to use SSL).
letsencrypt certonly -d example.com
You'll also probably want to configure automatic renewal by adding the command below to a cronjob that runs daily. You can add the command below to that crontab. For advanced users, we suggest installing and using acme.sh which provides more options, and is much more powerful than certbot.