How to mirror one domain to another?

Question

Network administration

There is a commonSite.ru domain , which is tied to the hosting on which the site files actually lie.
There is also an additional purchased domain, secondDomain.ru .
Please tell me how to make the site commonSite.ru displayed when navigating to secondDomain.ru , while there was no redirect, that is, as it was on the secondDomain.ru url , everything remained the same. Thank you.

Answer 1

Depends on the hosting ....
1. DocumentRoot. You can hang at least 100 domains on one pack. Each time pointing to the same DocumentRoot folder.
2.ServerAlias. In the settings, sometimes there is an Alias ​​field in which you can write all the names of the site. HTTPS won't work.
Hosting should have support...