How to install SSL certificate on a sub-domain

[aaronlroberts]

Hi

This is are the list of files available in the zip which received in my email

AddTrustExternalCARoot.crt
COMODORSAAddTrustCA.crt
COMODORSADomainValidationSecureServerCA.crt
subdomain_domain_com.crt

replaced my subdomain name for last crt file

how should i need to replace in the above code

Hi, have you not considered LetsEncrypt?

There's a great guide on how to do it for Sentora, it's very easy and it's free: 

http://docs.sentora.org/?node=103

I use this extensively across my server, pretty much for all domains and subdomains.. The main thing is, the primary domain (for example domain.com) requires you to apply a certificate to both the TLD and the "www." part. as seen in the guide.

To explain, here's a breakdown:

Code:

./letsencrypt-auto certonly --standalone -d domain.com -d www.domain.com

    ^ The command to get the certificate      ^ the TLD      ^ the WWW.

if you want to encrypt just a subdomain (for example, abc.domain.com), the command would be:

Code:

./letsencrypt-auto certonly --standalone -d abc.domain.com
   ^ The command to get the certificate       ^ the subdomain

Be careful to follow the rest of the instructions very carefully from the guide, otherwise you'll kill your VHOSTS file, causing Apache to not start.

Hope this helps!