Install the Commodo SSL cert

Combine everything for nginx [2]:

1. Combine the above crt files into a bundle (the order matters, here):

   cat www_example_com.crt COMODORSADomainValidationSecureServerCA.crt  COMODORSAAddTrustCA.crt AddTrustExternalCARoot.crt > ssl-bundle.crt
   

2. Store the bundle wherever nginx expects to find it:

   mkdir -p /etc/nginx/ssl/example_com/
   mv ssl-bundle.crt /etc/nginx/ssl/example_com/
   

3. Ensure your private key is somewhere nginx can read it, as well.:

   mv example_com.key /etc/nginx/ssl/example_com/
   

4. Make sure your nginx config points to the right cert file and to the private key you generated earlier:

   server {
       listen 443;
   
       ssl on;
       ssl_certificate /etc/nginx/ssl/example_com/ssl-bundle.crt;
       ssl_certificate_key /etc/nginx/ssl/example_com/example_com.key;
   
       # side note: only use TLS since SSLv2 and SSLv3 have had recent vulnerabilities
       ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
   
       # ...
   
   }
   

6. Restart nginx.