How to replace robots.txt for regional subdomains?

Question

Search Engine Optimization

Set up the site for subdomains region.sitename.ru.
But robots.txt is the same for everyone. And also sitemap.xml contains links to sitename.ru
How to solve this problem? How to issue your own robots.txt for each region?

Answer 1

Good afternoon.
Create your own robots.txt for each subdomain.
Use .htaccess

RewriteBase /
RewriteCond  %{HTTP_HOST} site\.ru$
RewriteRule ^robots.txt/$ site_robots/robots.txt [L]
RewriteCond  %{HTTP_HOST} site2\.ru$
RewriteRule ^robots.txt/$ site2_robots/robots.txt [L]