How to add SSL certificate to nginx for FREE

Firstly we have to issue certificates, I use this service to get it done. https://www.sslforfree.com you just enter a domain name for which you need a certificate and then download the archive with certificates. The next step is compiling contents to one bundle.crt and tweak a host for nginx.

1. Download the archive with certifcates
2. Extract it
3. Compile files certificate.crt and ca_bundle.crt to one file, you can use cat command or just open them with text editor and copy/paste under each other with new line.
4. Upload certificates to server, eg. to folder /etc/nginx/ssl
5. Add the next to your host file

server {
    listen 80;
    server_name example.com;
    return 301 https://example.com$request_uri;
}

server {
    listen 443;
    server_name example.com;

    ssl on;
    ssl_certificate /etc/nginx/ssl/bundle.crt;
    ssl_certificate_key /etc/nginx/ssl/private.key;

    ...
}