Nginx multiple locations each with its own root - nginx

Question

server {
listen 80;
server_name ~^(?<cc>.+?).local.solar.bc.digital$;
client_max_body_size 1m;
root /home/vagrant/sites/$cc/_www/;
index index.html index.htm index.php;
error_page 404 /index.php;
access_log /var/log/nginx/$cc-access.log;
error_log /var/log/nginx/$cc-error.log;
charset utf-8;
sendfile off;
location / {
root /home/vagrant/sites/$cc/_www/php/;
try_files $uri $uri/ /index.php?$query_string;
}
location /shop/ {
# root /home/vagrant/sites/$cc/_www/bcshop/;
try_files $uri $uri/ /index.php?$query_string;
}
location ~ \.php$ {
fastcgi_index index.php;
fastcgi_split_path_info ^(.+\.php)(/.*)$;
include /etc/nginx/fastcgi_params;
fastcgi_pass 127.0.0.1:9000;
fastcgi_param SCRIPT_FILENAME $request_filename;
fastcgi_param APP_ENV dev;
fastcgi_param PLATFORM_ENVIRONMENT local;
fastcgi_read_timeout 300;
fastcgi_buffers 16 16k;
fastcgi_buffer_size 32k;
}
location ~ /\.ht {
deny all;
}
}
Right, given the config above. If you see what I am trying to do, know that it's not working!
Some details:
I have the general 'root', because without I get errors.
This is on a local VM used for development. We have a deployment tool locally that for each project (refer to $cc variable in the config above), it can deploy up to two apps. Not necessarily both are deployed for each project. The first app is deployed in /home/vagrant/sites/$cc/_www/php, the second one in /home/vagrant/sites/$cc/_www/bcshop (but I can make it shop - you'll see why from the config)
Both apps run on Drupal, so the way the load is the same. I simply can't make them work. I get file not found for both with most of the small variants I've tried.
When I place the second app in /home/vagrant/sites/$cc/_www/shop (rather than /home/vagrant/sites/$cc/_www/bcshop) I can get its homepage to load, but nothing else.
When I disregard the second app, and concentrate on the first, I can simply have a general root set to /home/vagrant/sites/$cc/_www/php and remove the local root from location /. That works. But it doesn't when it's specified as local root. In this case, in fact, I get this error in the logs: "FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream". This only for the first app.
If you wonder why the general root is set to that value, it's because I get an error in the logs if the general root is not verifiable for the location being matched. Makes sense?
I think I've covered pretty much all of what I've done in summary.
Thoughts?
I am not an expert at all with nginx, so I am going by trial and errors, with the help of the docs and other questions answered on here. But so far, no joy.
Thanks all.

Answer 1

You have PHP files in both the _www/bcshop/ path and the _www/php/ path. If you would like to use one common location ~ \.php$ for both applications, then the URI for each application will need to be prefixed by /bcshop and /php respectively. That is, both applications appear to run in a subdirectory.
I suspect that you would like to use /shop prefix for one application, and the / prefix for the other. in which case two location ~ \.php$ blocks will be required.
One application runs from the server root:
root /home/vagrant/sites/$cc/_www/php;
location / {
try_files $uri $uri/ /index.php?$query_string;
}
location ~ \.php$ {
try_files $uri /index.php;
include /etc/nginx/fastcgi_params;
fastcgi_pass 127.0.0.1:9000;
fastcgi_param SCRIPT_FILENAME $request_filename;
...
}
And one application runs with a URI prefix of /shop but located in the subdirectory _www/bcshop:
location ^~ /shop {
rewrite ^/shop(?:/(.*))?$ /bcshop/$1 last;
}
location ^~ /bcshop/ {
internal;
root /home/vagrant/sites/$cc/_www;
try_files $uri /shop/index.php?$query_string;
location ~ \.php$ {
try_files $uri /shop/index.php;
include /etc/nginx/fastcgi_params;
fastcgi_pass 127.0.0.1:9000;
fastcgi_param SCRIPT_FILENAME $request_filename;
...
}
}
The ^~ modifier ensures that the location block takes precedence over the regular expression location block above. See this document for details.
Although the external URI prefix is /shop, it is silently rewritten to /bcshop so that we can continue to use the root directive. There is an alias directive, but it has issues with try_files and is tricky to use with PHP.

Answer 2

Based on the answer by #RichardSmith, I come up with my own variant (which is working fine). Simply because repeating the block for location ~ \.php$ was doing my head in.
...
...
root /home/vagrant/sites/$cc/_www/;
...
...
location / {
set $actual_root /home/vagrant/sites/$cc/_www/php/;
set $fastcgi_index /index.php;
root $actual_root;
try_files $uri $uri/ $fastcgi_index?$query_string;
}
location /shop/ {
set $actual_root /home/vagrant/sites/$cc/_www/;
set $fastcgi_index /shop/index.php;
root $actual_root;
try_files $uri $uri/ $fastcgi_index?$query_string;
}
location ~ \.php$ {
root $actual_root;
fastcgi_index $fastcgi_index;
fastcgi_split_path_info ^(.+\.php)(/.*)$;
include /etc/nginx/fastcgi_params;
fastcgi_pass 127.0.0.1:9000;
fastcgi_param SCRIPT_FILENAME $actual_root/$fastcgi_script_name;
fastcgi_param PATH_INFO $fastcgi_path_info;
fastcgi_param APP_ENV dev;
fastcgi_param PLATFORM_ENVIRONMENT local;
fastcgi_read_timeout 300;
fastcgi_buffers 16 16k;
fastcgi_buffer_size 32k;
}
...
...