Some of the cheaper or newer SSL suppliers will require this to work properly (otherwise you may be prompted that the cert is invalid when it's not the case but it will certainly scare off your users!).
In the Apache vhost conf for the domain here is what you add:
SSLCACertificateFile /path/to/your/cafile.pem
Here is a full example of an SSL Vhost config in Apache using a CA Certificate file
........
[Wed Jan 08 18:50:07 2014] [emerg] (28)No space left on device: Couldn't create accept lock (/etc/httpd/logs/accept.lock.15449) (5)
This may happen when trying to restart Apache and you find it dies right after starting and check /var/log/httpd/error_logs.
What is the cause of this?
You could be out of disk space (if you're not then see #2 and below)
You're out of Semaphores, you need to kill all the old ones.........
All Errors (CPanel does not report by domain, but puts everything in a single log which Ithink is a bit silly and annoying):
/usr/local/apache/logs/error_log
Access_Logs
They are found within the home directory of the site user eg.:
/home/admin/access-logs/yoursite.com
MySQL Logs
/var/lib/mysql/yourhostname.err........
This is a handy link and list of all the relevant Directadmin log files and related servers.
http://help.directadmin.com/item.php?id=11
DirectAdmin:
/var/log/directadmin/error.log
/var/log/directadmin/errortaskq.log
/var/log/directadmin/system.log
/var/log/directadmin/security.log
Apache:........
Have you ever seen this dreaded message in your Apache/HTTPD /var/log/httpd/error_log?
[error] server reached MaxClients setting, consider raising the MaxClients setting
The error itself is slightly misleading. Ibelieve this happened to one of my servers, I found Apache was running still, and that you could telnet to port 80 but no respnose would be given.
For some reason my error log initially did not have the above error, but after a restart I saw........