My environment is ubuntu and my domain has already been installed.
We already operate another site in the original domain.
What I’d like to do is to operate a different language version of the original site in the subdomain, but I do not know how to do it. So I want you to tell me that.
Now, accessing the subdomain shows the same site as the original.
We also set subdomains from the administration screen. (Subdomain is ‘test’.)
I made both A and CHAME and entered as follows.

root @ ubuntu - s - 1 vcpu - 1 gb - blr 1 - 01: ~ # cd / var / www
root @ ubuntu - s - 1 vcpu - 1 gb - blr 1 - 01: / var / www # ls
html
root @ ubuntu - s - 1 vcpu - 1 gb - blr 1 - 01: / var / www # mkdir subdomain
root @ ubuntu - s - 1 vcpu - 1 gb - blr 1 - 01: / var / www # ls
html subdomain
root @ ubuntu - s - 1 vcpu - 1 gb - blr 1 - 01: / var / www # chmod - R 755 subdomain
root @ ubuntu - s - 1 vcpu - 1 gb - blr 1 - 01: / var / www # ls
html subdomain
root @ ubuntu - s - 1 vcpu - 1 gb - blr 1 - 01: / var / www # ls - l
total 8
drwxr-xr-x 2 root root 4096 Aug 13 07: 06 html
drwxr - xr - x 2 root root 4096 Sep 16 05: 40 subdomain
root @ ubuntu - s - 1 vcpu - 1 gb - blr 1 - 01: / var / www # ls - l
total 8
drwxr-xr-x 2 root root 4096 Aug 13 07: 06 html
drwxr - xr - x 2 root root 4096 Sep 16 05: 40 subdomain
root @ ubuntu - s - 1 vcpu - 1 gb - blr 1 - 01: / var / www # cd subdomain /
root @ ubuntu - s - 1 vcpu - 1 gb - blr 1 - 01: / var / www / subdomain # sudo nano index.php
(Here suitably
<? php

echo 'It works !!';

?>
I will leave it aside. )
root @ ubuntu - s - 1 vcpu - 1 gb - blr 1 - 01: / var / www / subdomain # cd
root @ ubuntu - s - 1 vcpu - 1 gb - blr 1 - 01: ~ # sudo apt - get update
Reading package lists ... Done
root @ ubuntu - s - 1 vcpu - 1 gb - blr 1 - 01: ~ # cd / etc / apache 2 / sites - available
root @ ubuntu - s - 1 vcpu - 1 gb - blr 1 - 01: / etc / apache 2 / sites - available # ls
000-default.conf 000-default-le-ssl.conf default-ssl.conf
root @ ubuntu - s - 1 vcpu - 1 gb - blr 1 - 01: / etc / apache 2 / sites - available # cp 000 - default.conf test.com.conf
root @ ubuntu-s-1vcpu-1gb-blr1-01: / etc / apache2 / sites-available # sudo nano test.com.conf
(Here's how I changed it.
ServerName www.example.com → ServerName test.mydomain.com
                                                     + ServerAlias ​​www.mydomain.com

DocumentRoot / var / www / html -> DocumentRoot / var / www / subdomain
)
root @ ubuntu-s-1vcpu-1gb-blr1-01: / etc / apache2 / sites-available # sudo a2ensite test.com.conf
Enabling site test.com.
root @ ubuntu - s - 1 vcpu - 1 gb - blr 1 - 01: / etc / apache 2 / sites - available # sudo a 2 dissite 000 - default.conf
Site 000-default disabled.