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nginx server_name based on $hostname



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7















Based on the Nginx wiki the $hostname variable is set to the machine's hostname as returned by gethostname.



I tried that and although gethostname doesn't work my Debian box it still returns the host correctly.
Then I tried to use that variable $hostname to set the server_name, but that didn't work.



Why is that and is there another way I can accomplish that?



server 
listen 80;

autoindex off;

server_name static.$hostname;
root /var/www/static;

access_log /var/log/nginx/localhost.access.log;

location /
index index.html;


error_page 404 /404.html;
error_page 500 502 503 504 /50x.html;










share|improve this question






























    7















    Based on the Nginx wiki the $hostname variable is set to the machine's hostname as returned by gethostname.



    I tried that and although gethostname doesn't work my Debian box it still returns the host correctly.
    Then I tried to use that variable $hostname to set the server_name, but that didn't work.



    Why is that and is there another way I can accomplish that?



    server 
    listen 80;

    autoindex off;

    server_name static.$hostname;
    root /var/www/static;

    access_log /var/log/nginx/localhost.access.log;

    location /
    index index.html;


    error_page 404 /404.html;
    error_page 500 502 503 504 /50x.html;










    share|improve this question


























      7












      7








      7


      2






      Based on the Nginx wiki the $hostname variable is set to the machine's hostname as returned by gethostname.



      I tried that and although gethostname doesn't work my Debian box it still returns the host correctly.
      Then I tried to use that variable $hostname to set the server_name, but that didn't work.



      Why is that and is there another way I can accomplish that?



      server 
      listen 80;

      autoindex off;

      server_name static.$hostname;
      root /var/www/static;

      access_log /var/log/nginx/localhost.access.log;

      location /
      index index.html;


      error_page 404 /404.html;
      error_page 500 502 503 504 /50x.html;










      share|improve this question
















      Based on the Nginx wiki the $hostname variable is set to the machine's hostname as returned by gethostname.



      I tried that and although gethostname doesn't work my Debian box it still returns the host correctly.
      Then I tried to use that variable $hostname to set the server_name, but that didn't work.



      Why is that and is there another way I can accomplish that?



      server 
      listen 80;

      autoindex off;

      server_name static.$hostname;
      root /var/www/static;

      access_log /var/log/nginx/localhost.access.log;

      location /
      index index.html;


      error_page 404 /404.html;
      error_page 500 502 503 504 /50x.html;







      nginx hostname






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Jul 20 '18 at 15:45









      Community

      1




      1










      asked Dec 7 '11 at 11:30









      RoboTamerRoboTamer

      3371315




      3371315




















          2 Answers
          2






          active

          oldest

          votes


















          6














          Most variables in nginx only exist at runtime, not during configuration time.



          For this reason, most variables cannot be used with the server_name directive. Since $hostname is a constant value, there's an explicit check for exactly $hostname in the server_name handler.



          It only allows for the server_name to be set to $hostname, not static.$hostname. You may be able to patch the source to make it support that feature (ngx_http_core_module.c, look for $hostname), but you can't do it with the existing code.






          share|improve this answer
































            0














            You should find this works:



            server_name static.*;





            share|improve this answer























            • This would be incredibly insecure and allow host header injection attacks to anyone who sets "static.malicioushostnamehere.com" as an example.

              – MattBoothDev
              Nov 16 '18 at 11:25











            Your Answer








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            2 Answers
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            active

            oldest

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            2 Answers
            2






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            6














            Most variables in nginx only exist at runtime, not during configuration time.



            For this reason, most variables cannot be used with the server_name directive. Since $hostname is a constant value, there's an explicit check for exactly $hostname in the server_name handler.



            It only allows for the server_name to be set to $hostname, not static.$hostname. You may be able to patch the source to make it support that feature (ngx_http_core_module.c, look for $hostname), but you can't do it with the existing code.






            share|improve this answer





























              6














              Most variables in nginx only exist at runtime, not during configuration time.



              For this reason, most variables cannot be used with the server_name directive. Since $hostname is a constant value, there's an explicit check for exactly $hostname in the server_name handler.



              It only allows for the server_name to be set to $hostname, not static.$hostname. You may be able to patch the source to make it support that feature (ngx_http_core_module.c, look for $hostname), but you can't do it with the existing code.






              share|improve this answer



























                6












                6








                6







                Most variables in nginx only exist at runtime, not during configuration time.



                For this reason, most variables cannot be used with the server_name directive. Since $hostname is a constant value, there's an explicit check for exactly $hostname in the server_name handler.



                It only allows for the server_name to be set to $hostname, not static.$hostname. You may be able to patch the source to make it support that feature (ngx_http_core_module.c, look for $hostname), but you can't do it with the existing code.






                share|improve this answer















                Most variables in nginx only exist at runtime, not during configuration time.



                For this reason, most variables cannot be used with the server_name directive. Since $hostname is a constant value, there's an explicit check for exactly $hostname in the server_name handler.



                It only allows for the server_name to be set to $hostname, not static.$hostname. You may be able to patch the source to make it support that feature (ngx_http_core_module.c, look for $hostname), but you can't do it with the existing code.







                share|improve this answer














                share|improve this answer



                share|improve this answer








                edited 13 hours ago

























                answered Dec 7 '11 at 12:09









                kolbyjackkolbyjack

                6,47912524




                6,47912524























                    0














                    You should find this works:



                    server_name static.*;





                    share|improve this answer























                    • This would be incredibly insecure and allow host header injection attacks to anyone who sets "static.malicioushostnamehere.com" as an example.

                      – MattBoothDev
                      Nov 16 '18 at 11:25















                    0














                    You should find this works:



                    server_name static.*;





                    share|improve this answer























                    • This would be incredibly insecure and allow host header injection attacks to anyone who sets "static.malicioushostnamehere.com" as an example.

                      – MattBoothDev
                      Nov 16 '18 at 11:25













                    0












                    0








                    0







                    You should find this works:



                    server_name static.*;





                    share|improve this answer













                    You should find this works:



                    server_name static.*;






                    share|improve this answer












                    share|improve this answer



                    share|improve this answer










                    answered Feb 8 '17 at 11:51









                    richrich

                    1436




                    1436












                    • This would be incredibly insecure and allow host header injection attacks to anyone who sets "static.malicioushostnamehere.com" as an example.

                      – MattBoothDev
                      Nov 16 '18 at 11:25

















                    • This would be incredibly insecure and allow host header injection attacks to anyone who sets "static.malicioushostnamehere.com" as an example.

                      – MattBoothDev
                      Nov 16 '18 at 11:25
















                    This would be incredibly insecure and allow host header injection attacks to anyone who sets "static.malicioushostnamehere.com" as an example.

                    – MattBoothDev
                    Nov 16 '18 at 11:25





                    This would be incredibly insecure and allow host header injection attacks to anyone who sets "static.malicioushostnamehere.com" as an example.

                    – MattBoothDev
                    Nov 16 '18 at 11:25

















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