Nginx simple regex location

nginxregexregular expressions

I need to set a location param in nginx if the first 5 digits of the url are numbers.

site.com/12345/ or site.com/12345

But I can't for the life of me seem to get the correct regular expression.

None of these work.

location ^/([0-9]) { }
location ^/(\d\d\d\d\d) {}
location /(\d\d\d\d\d) {}

Best Answer

Try this

location ~ "^/[\d]{5}" {
    # ...
}

~ means the a regex location

^ means the beginning of the line

[\d] is shorthand for character class matching digits

{5} shows that the digits must be exactly five, no more, no less

and () parentheses are not necessary if you do not want then to use grouping, $1, for example

Double quotes because curley braces used in regex must be enclosed in double quotes: https://stackoverflow.com/questions/14684463/curly-braces-and-from-apache-to-nginx-rewrite-rules

Related Solutions

Nginx Location Regex – How to Match Directory Range with Nginx Location Regex

You can use:

location ~ ^/foo/bar/(\d|\d\d|1[0-4]\d|150)/ {
    proxy_pass backend1;
}

location ~ ^/foo/bar/(15[1-9]|1[6-9]\d|[23]\d\d|400)/ {
    proxy_pass backend2;
}
...

But why you do load balancing in such a heterogeneous way? Why not just shard by image id/hash of name? Your solution will result in different load and even load patterns on different servers. It would be tricky to administer them.

Nginx: location regex for multiple paths

According to nginx documentation:

Then regular expressions are checked, in the order of their appearance in the configuration file. The search of regular expressions terminates on the first match, and the corresponding configuration is used.

In your configuration, the following location is defined before the one with the proxy_pass and it matches the request of js and css files under static:

  location ~* \.(js|css|png|jpg|jpeg|gif|ico)$ {
    expires max;
    log_not_found off;
  }

Unfortunately the "log_not_found off" clause disables the logging for any file-not-found error related to this location, that's why your error_log is empty!

You can try to comment out this location or move it after the location with the proxy_pass (if you need it for other files not in static / media).

Best Answer

Related Solutions

Nginx Location Regex – How to Match Directory Range with Nginx Location Regex

Nginx: location regex for multiple paths

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