I want to define a variable in Apache server's httpd.conf configuration file.
Ex: variable static_path = C:\codebase\snp_static
and I want to use this variable (static_path) in httpd.conf where ever required.
Please tell me how can define a variable in httpd.conf file ?
Within httpd.conf, declare your variable(s) with: Define (Preferably at the very first line)
Syntax: Define variable-name variable-value
In this manner:
#The line below creates the variable [static_path] Define static_path C:/codebase/snp_static You can later use this variable like so:
ServerRoot = ${static_path} ... DocumentRoot = ${static_path} ... <Directory ${static_path}> ...etc. You can even combine multiple variables:
#Below, I am going to combine variables [server_space] and [static_path] Define server_space c:/ Define static_path codebase/snp_static ... ServerRoot = ${server_space}${static_path} ... DocumentRoot = ${server_space}${static_path} ... <Directory ${server_space}${static_path}> ...etc. Documentation: http://httpd.apache.org/docs/2.4/mod/core.html#define
mod_define on 2.2. After all, the documentation provided also works on 2.4 (and upwards). But just in case I am really, really wrong: people.apache.org/~rjung/mod_define/mod_define.html Have you tried it without modifications on your server?If all you want is simple variable substitution inside httpd.conf, then define an ordinary shell environment variable for the user that runs Apache, then use the ${ENVVAR} syntax to refer to it inside your httpd.conf file, see Apache docs
Apache2.4 I researched it out and here is what worked for me. and tested using httpd_z.exe -t -D DUMP_RUN_CFG
RESULTS::: ServerRoot: "C:/path/core/apache2" Main DocumentRoot: "C:/path/apache/htdocs" Main ErrorLog: "C:/path/core/apache2/logs/error.log" Mutex rewrite-map: using_defaults Mutex default: dir="C:/path/core/apache2/logs/" mechanism=default PidFile: "C:/path/core/apache2/logs/httpd.pid" Define: DUMP_RUN_CFG Define: US_ROOTF=C:/path **THIS IS THE ROOT PATH VARIABLE I JUST MADE** Define: php54 #<IfDefine TEST> # Define servername test.example.com #</IfDefine> #<IfDefine !TEST> # Define servername www.example.com # Define SSL #</IfDefine> #DocumentRoot /var/www/${servername}/htdocs <IfDefine US_ROOTF> Define US_ROOTF C:/PATH **The path i want the variable for** </IfDefine> <IfDefine !US_ROOTF> Define US_ROOTF C:/PATH **The path i want the variable for** # Define SSL </IfDefine> #DocumentRoot /var/www/${servername}/htdocs OPTIONS ON HOW TO USE EXAMPLE of use ServerRoot = ${US_ROOTF} <IfDefine php54> LoadFile "${US_ROOTF}/core/php54/icudt53.dll" PHPIniDir "${US_ROOTF}/core/php54/php_production.ini" I was told never to use a direct HARD path to anything when serving something to the internet always use variables to help secure your system.
I found the hard way this is so true. Now I finally figured out how to set the variables for all services dealing with Apache i use them.
Hope it helps you too.
Late to the question but recently had this issue and fixed it like so:
DEFINE path "C:\path/to the/directory"
Then later use like so:
DocumentRoot ${path} <Directory ${path}>
Note: In the path use \ after the drive letter
If your apache project is not taking system's environmental variables which we added to bashrc, We can directly EXPORT variables to /etc/apache2/envvars file
example: export ADMIN='Bibin'
