SSL certificate for subserver not working with subdomain

Virtualmin
1
SYSTEM INFORMATION
OS type and version debian 13
Webmin version 2.6
Virtualmin version 7.50.0 GPL

Hello,
I am trying to use a lets encrypt certificate for a subserver in virtualmin. This subserver also has a subdomain, and I only request the certificate for the subdomain. The certificate request works fine, I can see my certificate in “SSL Certificate” page.
If I try to load the domain of the sub-server it says the certificate is for subserver subdomain (fine). But when I try to load my web site using the subdomain it says it’s invalid, and it shows me the certificate from the main server, instead of subserver subdomain.

main server : celeos.fr
subserver domain : mains-sages.org
subdomain in the subserver : permaculture.mains-sages.org

2

I’ve been able to workaround by renaming my subserver domain name with my subdomain name. But now I have the the opposite problem. When I try to load the domain mains-sages.org it tries to use the main server certificate instead of the subserver domain.
Should I create 2 subservers ? One with and one without subdomain ?
In a previous version of virtualmin I did not have to do that.

3

OK. I’m getting a head ache here. :wink:
Without knowing the content and what you are trying to do, my strategy here would be

Server:  celeos.fr
Server:  mains-sages.org
  sub-server:  permaculture.mains-sages.org

This presumes that celeos.fr is independent of mains-sages.org in content. If not I think you might want to look at aliases instead? Not my area of expertise. My sub-servers all point to a docker container so it is a little more interesting. I had to proxy it so that’s why I went with a sub-server. At one point one browser complained that the images from the docker container weren’t secure. All the ssl is done at the server level.

4

my subservers share the same database and wordpress files (same public_html folder), but their websites are independant (wordpress multisite)
So I can’t make 2 independent servers as you suggest, but I am not sure alias could apply to this case ?

5

I have NO clue on how WP multi site works. With Discourse multi site using a Docker container I have independent sites that I proxy to the container. I put the domain on a server and the forum.xyz.xxx on a sub server of that server for the proxy stuff. Discourse does the rest.

I don’t know if the Pro version WordPress Bench would do this. It seems to me that if WP has a multi site option they would have some method of handling this? But good luck. I was having trouble wrapping my head around the what and why of what you were doing but at least it is a little clearer to me what you are doing.

6

I did more testing, and I could create aliases from my main server, it works fine with WP multisite.
The downsides are : I can’t get awstat reporting per domain name. I also can’t configure php settings and php fpm pools per domain name.
But I guess I would save resources to have only one apache/php pool for the whole multisite, instead of one for each subsite.
Because I have another network with 15 subsites and it can make a difference

1 Like
7

So many pieces to the puzzle. :wink: