How to redirect a subdomain from www?

Question

Apache HTTP Server

Hello! How to make a redirect from www.subdomain.domain.ru to subdomain.domain.ru ?
Is it possible to do this at all? It's just that if you enter subdomain.domain.ru, then everything is fine, but if www.subdomain.domain.ru, then it says "Server not found"

Answer 1

First of all, you need www.subdomain.domain.ru to have an ip address (for it to work ping www.subdomain.domain.ru).
That is, you need to resolve the issue with DNS - either add an A record with the IP address of your server, or www.subdomain.domain.ru CNAME subdomain.domain.ru
Further in the config where ServerName subdomain.domain.ru you can add ServerAlias ​​www.subdomain. domain.ru
Then decide - either leave it or add the Rewrite rule.

Answer 2

RewriteCond %{HTTP_HOST} ^www\.(.*) [NC]
RewriteRule ^(.*)$ http://%1/$1 [R=301,L]