Do you have control of the main WP installation? Check out http://codex.wordpress.org/Create_A_Network.
Using a network, you won’t need multiple WP installations. You can have do it all through the main one.
You will have two options.
1. Your second blog will be accessed like http://www.example.com/blog/.
2. Your second blog will be accessed like http://blog.example.com/.
I prefer the second option and have done many installations this way. Name it something better than “blog” though.
Thanks Rexgoode for the reply. i have done the same that is mentioned in http://codex.wordpress.org/Create_A_Network.
the second option “Your second blog will be accessed like http://blog.example.com/” is selected and it has also made a domain
http://forum.mysite.com/
but when i click on its dashboard it says
“Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, webmaster@forums.marthut.com and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log.
Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.”
kindly help what to do and how to install blog/forums in it
Thanks
Go back and check the instructions again. Your wp-config.php and most likely, your .htaccess files are not quite right. There should have been a point in the process where you were asked to copy certain code into both files. It looks like you missed something. If you start with your wp-config-sample.php file again and fill in the right database login information, you can do the whole process over. Do the steps exactly, especially making sure to carefully put the right code into .htaccess and wp-config.php. Also, check the permissions on all of your root directory files.
It’s not WP.
Go to http://www.whatsmydns.net/#A/forums.marthut.com
See how there are X’s for all your IPs? That’s what’s wrong. You need to either make wildcard subdomains, or manually define the subdomain on your server.