Is it possible to use variables in httpd.conf

apache apache-config
Paul Spencer picture Paul Spencer · Jan 13, 2011 · Viewed 54k times · Source

Is there a way to use variables of some sort in an apache httpd.conf file? I'd like to define a value and use it throughout a block, as in

define myvar somename #or whatever the syntax would be
alias /my/path "/some/path/${myvar} #or whatever the syntax would be

Answer

noodl picture noodl · Jan 13, 2011

Yes, kind of. You can get environment variables substituted in to the config file at start up with the ${ENVVAR} syntax. It's up to you to figure out how to set those variables before starting up the server.

http://httpd.apache.org/docs/2.2/configuring.html#syntax

Note that these variables will persist so any scripts in languages like php will be able to read them.

Also it's important to note that these values are interpreted once only when the server starts up so they're more like constants than variables.

Update

As of httpd version 2.4, see this answer instead: https://stackoverflow.com/a/15731921/498798

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