Dynamic Subdomain Configuration

Server NGINX
1

Hello,

We provide a subdomain for each user, for example:

 paul.ourdomain.com
 jay.ourdomain.com
 bob.ourdomain.com
 xxxxx.ourdomain.com

Currently, I am doing this manually by adding another config in
/etc/nginx/conf.d for each subdomain. A typical conf looks like:

server {
listen 80;

server_name paul.ourdomain.com;

root /srv/www/users/paul/wp;

index index.php;

access_log /var/log/nginx/vhosts/paul.access.log;
error_log /var/log/nginx/vhosts/paul.error.log;

include /etc/nginx/excludes.conf;
include /etc/nginx/wordpress.conf;
include /etc/nginx/expires.conf;
}

Is there I way I can abstract this, and prevent creating a configuration
for each subdomain? I was reading something about map, but don’t fully
understand it.

Thanks.

Posted at Nginx Forum:

2

On Tue, Feb 21, 2012 at 2:28 AM, justin [email protected] wrote:

/etc/nginx/conf.d for each subdomain. A typical conf looks like:
access_log /var/log/nginx/vhosts/paul.access.log;

Probably something like this:

map $host $username {
some.domain.com usera;
another.one.net userb;
}

server {
root /srv/www/users/$username/wp;
access_log /var/log/nginx/vhosts/$username.access.log;
…
}

Or this (without map):

server {
server_name ~^(?.+).domain.com$;
root /srv/www/users/$username/wp;
…
}

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3

Edho,

Thank you very much for the assistance. Here is what I used, and seems
to be working perfectly:

server {
listen 80;

server_name ~^(?.+).mydomain.com$;

root /srv/www/users/$user/wp;

index index.php;

access_log /var/log/nginx/vhosts/$user.access.log;
error_log /var/log/nginx/vhosts/$user.error.log;

include /etc/nginx/excludes.conf;
include /etc/nginx/wordpress.conf;
include /etc/nginx/expires.conf;
}

Posted at Nginx Forum:

4

Hello!

On Mon, Feb 20, 2012 at 02:55:39PM -0500, justin wrote:

Edho,

Thank you very much for the assistance. Here is what I used, and seems
to be working perfectly:

[…]

access_log /var/log/nginx/vhosts/$user.access.log;
error_log /var/log/nginx/vhosts/$user.error.log;

Note: the “error_log” directive doesn’t support variables, and
this will log all errors into “$user.error.log” file.

Maxim D.

5

Actually, I think I found how to set the 404:

location ~ .php$ {
if (!-f $document_root/$fastcgi_script_name) {
log_not_found off;
return 404;
}

include /etc/nginx/fastcgi_params;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_intercept_errors off;
fastcgi_pass php1.local.pagelines.com:9000;
}

But I can’t use log_not_found off, getting an error about the ability to
use this in the location. Basically, I don’t want an error logged if
somebody types:

foobar.mydomain.com

Posted at Nginx Forum:

6

On Tue, Feb 21, 2012 at 7:18 AM, justin [email protected] wrote:

fastcgi_intercept_errors off;
fastcgi_pass php1.local.pagelines.com:9000;
}

But I can’t use log_not_found off, getting an error about the ability to
use this in the location. Basically, I don’t want an error logged if
somebody types:

Try

try_files $uri =404;

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7

How do I handle the fallback, i.e. somebody types:

foobar.mydomain.com

Which does not exists, right now I am getting: no input file. Instead,
would love to simply return a 404 error, or even better serve a custom
static 404 error page.

Maxim:

Bummer that error_log does not support variables, anyway to do this
dynamically?

Posted at Nginx Forum:

8

On Tue, Feb 21, 2012 at 8:28 AM, justin [email protected] wrote:

This is for Wordpress, I already have a try_files. I want to log not
found everywhere else, just not in the dynamic subdomain

You can (should) have another try_files in location ~ .php$

location / {
try_files $uri $uri/ /index.php?$args;
}

location ~ .php$ {
try_files $uri =404;
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9

Edho,

Still seeing logged:

2012/02/20 17:37:18 [error] 12840#0: *27 testing “/srv/www/users/boo/wp”
existence failed (2: No such file or directory) while logging request

With:

location ~ .php$ {
try_files $uri =404;
}

Posted at Nginx Forum:

10

This is for Wordpress, I already have a try_files. I want to log not
found everywhere else, just not in the dynamic subdomain

location / {
try_files $uri $uri/ /index.php?$args;
}

location ~ .php$ {
if (!-f $document_root/$fastcgi_script_name) {
log_not_found off;
return 404;
}

include /etc/nginx/fastcgi_params;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_intercept_errors off;
fastcgi_pass php1.local.pagelines.com:9000;
}

Posted at Nginx Forum:

11

Still trying to track down what is causing the following to be logged in
the error log:

2012/02/21 10:42:13 [error] 13884#0: *19 testing
“/srv/www/users/foobar/wp” existence failed (2: No such file or
directory) while logging request, client: X.X.X.X, server:
~^(?.+).mydomain.com$, request: “GET / HTTP/1.1”, host:
“foobar.pagelines.com”

I believe the problem is since I am configuring the server_name and root
dynamically:

server_name ~^(?.+).mydomain.com$;
root /srv/www/users/$user/wp;

And obviously the root directory does not exist for foobar. Is there a
way to suppress these errors, or maybe check if the root directory
exists?

Posted at Nginx Forum:

12

On Tue, Feb 21, 2012 at 8:40 AM, justin [email protected] wrote:

Edho,

Still seeing logged:

2012/02/20 17:37:18 [error] 12840#0: *27 testing “/srv/www/users/boo/wp”
existence failed (2: No such file or directory) while logging request

The errors seems like coming from root directive. I don’t know how to
prevent logging that, sorry. Anyway, the try_files in location php
block should allow you to use custom static 404 error page.

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