Old hostname shows up in new hostname certificates

Symptoms

When a hostname certificate is issued, you will notice that the certificate includes the server's previous hostname.

Cause 

When preparing a new certificate request, the /usr/local/cpanel/bin/checkallsslcerts script looks at the current hostname and previous hostnames that resolve to the server. This data is stored in the following file, /var/cpanel/hostname_history.json

Resolution

1. Move the hostname_history.json file out of the way.

   # mv -v /var/cpanel/hostname_history.json{,.$(date +%s)}

2. Move hostname_cert_csrs out of the way.

   # mv -v /var/cpanel/hostname_cert_csrs{,.$(date +%s)}

3. Run the /usr/local/cpanel/bin/checkallsslcerts script to order a new certificate.

   # /usr/local/cpanel/bin/checkallsslcerts