# Nginx rewrite help **URL:** \ **Category:** NGINX\ **Created:** [June 18, 2009, 6:31am UTC](https://www.ruby-forum.com/t/nginx-rewrite-help/170499 "2009-06-18T06:31:04Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Kevin\_Castiglione](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/ecd19e/32.png) [@Kevin\_Castiglione](https://www.ruby-forum.com/u/Kevin_Castiglione)\ **Post date:** [June 18, 2009, 6:31am UTC](https://www.ruby-forum.com/t/nginx-rewrite-help/170499/1 "2009-06-18T06:31:04Z")
hei guys i want all urls to be re-written as follows: xx /host/xx xx is the url full path, it should be written as /domain/xx where host is the hostname. for example [www.ABCD.COM](http://www.ABCD.COM) [http://www.abcd.com/](http://www.abcd.com/) /test?1 —\> /ABCD.COM/test?1 [http://abcd.com/test?1](http://abcd.com/test?1) is it possible to do this with nginx? thank you! ---
**Author:** ![Kevin\_Castiglione](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/ecd19e/32.png) [@Kevin\_Castiglione](https://www.ruby-forum.com/u/Kevin_Castiglione)\ **Post date:** [June 18, 2009, 6:49am UTC](https://www.ruby-forum.com/t/nginx-rewrite-help/170499/2 "2009-06-18T06:49:46Z")
On Thu, Jun 18, 2009 at 11:22 AM, Kevin Castiglione[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > /test?1 —\> /ABCD.COM/test?1 > is it possible to do this with nginx? > thank you! rewrite ^(.\*)$ /$host$1; ---
**Author:** ![Kevin\_Castiglione](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/ecd19e/32.png) [@Kevin\_Castiglione](https://www.ruby-forum.com/u/Kevin_Castiglione)\ **Post date:** [June 18, 2009, 6:53am UTC](https://www.ruby-forum.com/t/nginx-rewrite-help/170499/3 "2009-06-18T06:53:17Z")
On Thu, Jun 18, 2009 at 11:42 AM, Edho P Arief[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > for example [www.ABCD.COM](http://www.ABCD.COM) > > > > /test?1 —\> /ABCD.COM/test?1 > > is it possible to do this with nginx? > > thank you! > > rewrite ^(.\*)$ /$host$1; add redirect/permanent for external redirect. rewrite ^.\* /$host$uri; can also be used (less captures hence faster?) ---
**Author:** ![Kevin\_Castiglione](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/ecd19e/32.png) [@Kevin\_Castiglione](https://www.ruby-forum.com/u/Kevin_Castiglione)\ **Post date:** [June 18, 2009, 7:19am UTC](https://www.ruby-forum.com/t/nginx-rewrite-help/170499/4 "2009-06-18T07:19:00Z")
On Thu, Jun 18, 2009 at 11:49 AM, Edho P Arief[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > > the hostname. > > > > add redirect/permanent for external redirect. > > > > rewrite ^.\* /$host$uri; > > > > can also be used (less captures hence faster?) here’s the complete block location ~ ^(?!/www.abcd.com) { rewrite ^.\*$ /$host$uri; } ---
**Author:** ![Kevin\_Castiglione](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/ecd19e/32.png) [@Kevin\_Castiglione](https://www.ruby-forum.com/u/Kevin_Castiglione)\ **Post date:** [June 18, 2009, 9:55am UTC](https://www.ruby-forum.com/t/nginx-rewrite-help/170499/5 "2009-06-18T09:55:06Z")
On Wed, Jun 17, 2009 at 09:22:46PM -0700, Kevin Castiglione wrote: > /test?1 —\> /ABCD.COM/test?1 [http://abcd.com/test?1](http://abcd.com/test?1) > is it possible to do this with nginx? > thank you! Should it be redirect or what ? ---
**Author:** ![Kevin\_Castiglione](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/ecd19e/32.png) [@Kevin\_Castiglione](https://www.ruby-forum.com/u/Kevin_Castiglione)\ **Post date:** [June 18, 2009, 6:55am UTC](https://www.ruby-forum.com/t/nginx-rewrite-help/170499/6 "2009-06-18T06:55:37Z")
On Thu, Jun 18, 2009 at 11:46 AM, Edho P Arief[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > > > rewrite ^.\* /$host$uri; > > can also be used (less captures hence faster?) whoops don’t forget to add last; ---
**Author:** ![Kevin\_Castiglione](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/ecd19e/32.png) [@Kevin\_Castiglione](https://www.ruby-forum.com/u/Kevin_Castiglione)\ **Post date:** [June 18, 2009, 3:53pm UTC](https://www.ruby-forum.com/t/nginx-rewrite-help/170499/7 "2009-06-18T15:53:33Z")
2009/6/18 Igor S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > > for example [www.ABCD.COM](http://www.ABCD.COM) [http://www.abcd.com/](http://www.abcd.com/) > > > > /test?1 —\> /ABCD.COM/test?1 [http://abcd.com/test?1](http://abcd.com/test?1) > > is it possible to do this with nginx? > > thank you! > > Should it be redirect or what ? i dont want it to be a permanent redirect. i just want the url to be rewritten for application processing. i want different domains to be handled by same web app an dmy webframe work supports only url-level application mapping. that is why i need this rewrite. thank you ---
**Author:** ![Kevin\_Castiglione](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/ecd19e/32.png) [@Kevin\_Castiglione](https://www.ruby-forum.com/u/Kevin_Castiglione)\ **Post date:** [June 18, 2009, 3:45pm UTC](https://www.ruby-forum.com/t/nginx-rewrite-help/170499/8 "2009-06-18T15:45:55Z")
On Wed, Jun 17, 2009 at 10:09 PM, Edho P Arief [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > location ~ ^(?!/www.abcd.com) { > rewrite ^.\*$ /$host$uri; > } hi edho, thanks a lot for this. does $host represent [www.abcd.com](http://www.abcd.com) or [abcd.com](http://abcd.com)? thanks again! ---
**Author:** ![Kevin\_Castiglione](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/ecd19e/32.png) [@Kevin\_Castiglione](https://www.ruby-forum.com/u/Kevin_Castiglione)\ **Post date:** [June 18, 2009, 4:29pm UTC](https://www.ruby-forum.com/t/nginx-rewrite-help/170499/9 "2009-06-18T16:29:24Z")
2009/6/18 Igor S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > > > > > > > > > > Should it be redirect or what ? > > server { > > location / { > proxy\_pass [http://backend/$host$request\_uri](http://backend/$host$request_uri); > } > > } im using fastcgi backend. ---
**Author:** ![Kevin\_Castiglione](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/ecd19e/32.png) [@Kevin\_Castiglione](https://www.ruby-forum.com/u/Kevin_Castiglione)\ **Post date:** [June 18, 2009, 4:01pm UTC](https://www.ruby-forum.com/t/nginx-rewrite-help/170499/10 "2009-06-18T16:01:11Z")
On Thu, Jun 18, 2009 at 06:38:54AM -0700, Kevin Castiglione wrote: > > > the hostname. > > > i dont want it to be a permanent redirect. i just want the url to be > > > rewritten for application processing. i want different domains to be handled > > > by same web app an dmy webframe work supports only url-level application > > > mapping. that is why i need this rewrite. > > > thank you If you use proxing, then server { location / { proxy\_pass [http://backend/$host$request\_uri](http://backend/$host$request_uri); } } ---
**Author:** ![Kevin\_Castiglione](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/ecd19e/32.png) [@Kevin\_Castiglione](https://www.ruby-forum.com/u/Kevin_Castiglione)\ **Post date:** [June 18, 2009, 4:35pm UTC](https://www.ruby-forum.com/t/nginx-rewrite-help/170499/11 "2009-06-18T16:35:17Z")
On Thu, Jun 18, 2009 at 07:21:33AM -0700, Kevin Castiglione wrote: > > > > > thank you! > > im using fastcgi backend. > Then location / { … fastcgi\_param SCRIPT\_FILENAME /path/to/scripts/$host$fastcgi\_script\_name; … } ---
**Author:** ![Kevin\_Castiglione](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/ecd19e/32.png) [@Kevin\_Castiglione](https://www.ruby-forum.com/u/Kevin_Castiglione)\ **Post date:** [June 18, 2009, 5:03pm UTC](https://www.ruby-forum.com/t/nginx-rewrite-help/170499/12 "2009-06-18T17:03:38Z")
On Thu, Jun 18, 2009 at 07:44:55AM -0700, Kevin Castiglione wrote: > > > > > > On Wed, Jun 17, 2009 at 09:22:46PM -0700, Kevin Castiglione wrote: > > > > > > > > > > > > > for example [www.ABCD.COM](http://www.ABCD.COM) [http://www.abcd.com/](http://www.abcd.com/) > > > > > > > handled > > > > > > > proxy\_pass [http://backend/$host$request\_uri](http://backend/$host$request_uri); > > > > > > > fastcgi\_param SCRIPT\_FILENAME > > > > > > > /path/to/scripts/$host$fastcgi\_script\_name; > > > > > > > … > > > > > > > } > > igor: > does this mean the backend fastcgi processes have to be in the same machine? > i have my backends running on different machine like this No, this path /path/to/scripts/$host$fastcgi\_script\_name; may be on any host. In your case you need probably this: ``` fastcgi_param SCRIPT_FILENAME /$host$fastcgi_script_name; ``` > ``` > } > fastcgi_param SERVER_ADDR $server_addr; > fastcgi_param SERVER_PORT $server_port; > fastcgi_param SERVER_NAME $server_name; > } > > } > > ``` Also, this ``` if ($http_x_forwarded_for ~ "(?:^|,)\s*(\d+\.\d+\.\d+\.\d+)\s*$") ``` { set $addr $1; } ``` fastcgi_param REMOTE_ADDR $addr; ``` means that anyone may forge his address. ---
**Author:** ![Kevin\_Castiglione](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/ecd19e/32.png) [@Kevin\_Castiglione](https://www.ruby-forum.com/u/Kevin_Castiglione)\ **Post date:** [June 18, 2009, 4:57pm UTC](https://www.ruby-forum.com/t/nginx-rewrite-help/170499/13 "2009-06-18T16:57:44Z")
2009/6/18 Igor S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > > > > > > hei guys > > > > > > /test?1 —\> /ABCD.COM/test?1 [http://abcd.com/test?1](http://abcd.com/test?1) > > > > > > application > > ``` > ... > > ``` > > } igor: does this mean the backend fastcgi processes have to be in the same machine? i have my backends running on different machine like this ``` upstream backend_flock{ server app1.YYY.com:8491 fail_timeout=1s; server app2.YYY.com:8491 fail_timeout=1s; } server { server_name .XXX.com; listen 80; access_log logs/access.log; client_max_body_size 10m; location / { root /home/app/flock; fastcgi_pass backend_flock; set $addr $remote_addr; if ($http_x_forwarded_for ~ ``` “(?:^|,)\s\*(\d+.\d+.\d+.\d+)\s\*$”) { set $addr $1; } ``` fastcgi_param SCRIPT_FILENAME $fastcgi_script_name; fastcgi_param PATH_INFO $fastcgi_script_name; fastcgi_param QUERY_STRING $query_string; fastcgi_param CONTENT_TYPE $content_type; fastcgi_param CONTENT_LENGTH $content_length; fastcgi_param REQUEST_METHOD $request_method; fastcgi_param REMOTE_ADDR $addr; fastcgi_param REMOTE_PORT $remote_port; fastcgi_param SERVER_PROTOCOL $server_protocol; fastcgi_param SERVER_ADDR $server_addr; fastcgi_param SERVER_PORT $server_port; fastcgi_param SERVER_NAME $server_name; } } ``` ---
**Author:** ![Kevin\_Castiglione](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/ecd19e/32.png) [@Kevin\_Castiglione](https://www.ruby-forum.com/u/Kevin_Castiglione)\ **Post date:** [June 18, 2009, 5:20pm UTC](https://www.ruby-forum.com/t/nginx-rewrite-help/170499/14 "2009-06-18T17:20:05Z")
2009/6/18 Igor S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > > > > > > 2009/6/18 Igor S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > > > > > > where > > > > > > > > > > > > > > > > > > > > > im using fastcgi backend. > > > > igor: > > > > fastcgi\_param SCRIPT\_FILENAME /$host$fastcgi\_script\_name; > > > > so with this i dont need to write any rewrite rule? also instead of $host, if i want to use domain or subdomain can you tell how i can extract: [[aa.bb.com](http://aa.bb.com)] → domain - [bb.com](http://bb.com) → subdomain - aa > Also, this > > ``` > if ($http_x_forwarded_for ~ "(?:^|,)\s*(\d+\.\d+\.\d+\.\d+)\s*$") { > set $addr $1; > } > > fastcgi_param REMOTE_ADDR $addr; > > ``` > > means that anyone may forge his address. without this my web app gets client ip address as the ip address of the machine running nginx and not the actual client. ---
**Author:** ![Kevin\_Castiglione](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/ecd19e/32.png) [@Kevin\_Castiglione](https://www.ruby-forum.com/u/Kevin_Castiglione)\ **Post date:** [June 18, 2009, 5:31pm UTC](https://www.ruby-forum.com/t/nginx-rewrite-help/170499/15 "2009-06-18T17:31:49Z")
On Thu, Jun 18, 2009 at 08:10:27AM -0700, Kevin Castiglione wrote: > > > > > > On Thu, Jun 18, 2009 at 06:38:54AM -0700, Kevin Castiglione wrote: > > > > > > > > > > > > > > > > > > > > > > > > > > > > > mapping. that is why i need this rewrite. > > > > > > > } > > > > > > > } > > > > > > > In your case you need probably this: > > > > ``` > > fastcgi_param SCRIPT_FILENAME /$host$fastcgi_script_name; > > > > ``` > > so with this i dont need to write any rewrite rule? Yes. > also instead of $host, if i want to use domain or subdomain can you tell how > i can extract: [[aa.bb.com](http://aa.bb.com)] > → domain - [bb.com](http://bb.com) > → subdomain - aa ``` server { server_name ~^([^.])\.(.+)$)$; set $subdomain $1; set $domain $2; location / { fastcgi_param SCRIPT_FILENAME /$domain$fastcgi_script_name; ``` > without this my web app gets client ip address as the ip address of the > machine running nginx and not the actual client. ``` fastcgi_param REMOTE_ADDR $remote_addr; ``` sets address of nginx’s client. ---
**Author:** ![Kevin\_Castiglione](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/ecd19e/32.png) [@Kevin\_Castiglione](https://www.ruby-forum.com/u/Kevin_Castiglione)\ **Post date:** [June 18, 2009, 5:31pm UTC](https://www.ruby-forum.com/t/nginx-rewrite-help/170499/16 "2009-06-18T17:31:13Z")
On Thu, Jun 18, 2009 at 10:10 PM, Kevin Castiglione[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > means that anyone may forge his address. > > without this my web app gets client ip address as the ip address of the > machine running nginx and not the actual client. why not fastcgi\_param REMOTE\_ADDR $remote\_addr; ? or is this for nginx on another pc used as proxy backend? ---
**Author:** ![Kevin\_Castiglione](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/ecd19e/32.png) [@Kevin\_Castiglione](https://www.ruby-forum.com/u/Kevin_Castiglione)\ **Post date:** [June 19, 2009, 2:37am UTC](https://www.ruby-forum.com/t/nginx-rewrite-help/170499/17 "2009-06-19T02:37:26Z")
2009/6/18 Igor S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > > > > > > 2009/6/18 Igor S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > > > > > > > > > > > > > > > > i want all urls to be re-written as follows: > > > > > > > > > > > > > > > > rewritten for application processing. i want different > > > > > > > > server { > > > > > > > > i have my backends running on different machine like this > > Yes. igor, i changed this and tried. it does not have any affect on the url mapping. my fastcgi backend still gets the same url as before. this is what i see, with the change you had given. [xx.com domain name is for sale. Inquire now.](http://xx.com/yy) —\> [xx.com domain name is for sale. Inquire now.](http://xx.com/yy) while this is what i want on the webapp/fastcgi backend [xx.com domain name is for sale. Inquire now.](http://xx.com/yy) → [xx.com domain name is for sale. Inquire now.](http://xx.com/xx.com/yy) im pasting my full config here: #user nobody; worker\_processes 1; error\_log /home/app/error\_all.log; pid /home/app/nginx.pid; events { worker\_connections 1024; } http { include mime.types; default\_type application/octet-stream; client\_header\_buffer\_size 8k; large\_client\_header\_buffers 4 8k; fastcgi\_buffers 32 4k; fastcgi\_buffer\_size 4k; sendfile on; ``` server_names_hash_bucket_size 64; keepalive_timeout 5; gzip on; gzip_comp_level 1; gzip_proxied private; gzip_buffers 8 4k; upstream backend_flock{ server app1.XXX.com:8492 fail_timeout=1s; } server { listen 8080; access_log /home/app/access_flock.log; client_max_body_size 10m; location /static { root /home/app/work/flock; } location / { root /home/app/work/flock; fastcgi_pass backend_flock; fastcgi_param SCRIPT_FILENAME /$host$fastcgi_script_name; fastcgi_param PATH_INFO $fastcgi_script_name; fastcgi_param QUERY_STRING $query_string; fastcgi_param CONTENT_TYPE $content_type; fastcgi_param CONTENT_LENGTH $content_length; fastcgi_param REQUEST_METHOD $request_method; fastcgi_param REMOTE_ADDR $remote_addr; fastcgi_param REMOTE_PORT $remote_port; fastcgi_param SERVER_PROTOCOL $server_protocol; fastcgi_param SERVER_ADDR $server_addr; fastcgi_param SERVER_PORT $server_port; fastcgi_param SERVER_NAME $server_name; } } ``` } > > > means that anyone may forge his address. > > > > without this my web app gets client ip address as the ip address of the > > machine running nginx and not the actual client. > > ``` > fastcgi_param REMOTE_ADDR $remote_addr; > > ``` > > sets address of nginx’s client. this works great!! thanks a lot! ---
**Author:** ![Kevin\_Castiglione](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/ecd19e/32.png) [@Kevin\_Castiglione](https://www.ruby-forum.com/u/Kevin_Castiglione)\ **Post date:** [June 19, 2009, 6:06am UTC](https://www.ruby-forum.com/t/nginx-rewrite-help/170499/18 "2009-06-19T06:06:11Z")
On Fri, Jun 19, 2009 at 7:26 AM, Kevin Castiglione[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Â Â Â Â Â Â Â Â Â Â Â fastcgi\_pass backend\_flock; > > Â Â Â Â Â Â Â Â Â Â Â - fastcgi\_param SCRIPT\_FILENAME /$host$fastcgi\_script\_name; - fastcgi\_param SCRIPT\_FILENAME /$host/$host$fastcgi\_script\_name; ---
**Author:** ![Kevin\_Castiglione](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/ecd19e/32.png) [@Kevin\_Castiglione](https://www.ruby-forum.com/u/Kevin_Castiglione)\ **Post date:** [June 19, 2009, 2:37am UTC](https://www.ruby-forum.com/t/nginx-rewrite-help/170499/19 "2009-06-19T02:37:27Z")
On Thu, Jun 18, 2009 at 8:23 AM, Edho P Arief [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > > > fastcgi\_param REMOTE\_ADDR $remote\_addr; this works great!!! thanks ---
**Author:** ![Kevin\_Castiglione](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/ecd19e/32.png) [@Kevin\_Castiglione](https://www.ruby-forum.com/u/Kevin_Castiglione)\ **Post date:** [June 19, 2009, 7:28am UTC](https://www.ruby-forum.com/t/nginx-rewrite-help/170499/20 "2009-06-19T07:28:40Z")
On Thu, Jun 18, 2009 at 8:55 PM, Edho P Arief [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > On Fri, Jun 19, 2009 at 7:26 AM, Kevin > Castiglione[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > ``` > > fastcgi_pass backend_flock; > > > > - fastcgi_param SCRIPT_FILENAME /$host$fastcgi_script_name; > > > > ``` > > - fastcgi\_param SCRIPT\_FILENAME /$host/$host$fastcgi\_script\_name; Edho This also produces the same result. the mapping does not work as expected. thank you! [Next page](https://www.ruby-forum.com/t/nginx-rewrite-help/170499.md?page=2)