Topic: Issue in passing environmental variables in Apache 2.4

[abcd]

I have installed Apache2.4 version but i am not able to pass the environment variables to my application which was working fine in Apache version 1.3.9 , i have googled a lot and after many trials its still not working.

The module mod_env.c is loaded and the syntax is
PassEnv BUILD_HOST
This env variable is passed through the cgi script which is called by my application.

When i am starting the apache its throwing error:

[Thu Aug 06 14:40:13.740194 2015] [env:warn] [pid 4864:tid 288] AH01506: PassEnv
variable BUILD_HOST was undefined

Somebody please help!!

[jraute]

Hello abcd,

it's not throwing an error it's just a warning.
Besides this if you define a variable with PassEnv then you have to set something to fill it.
That is the missing part at the start.

[glsmith]

Do I see confusion between PassEnv (the variable has to already exist in the OS) and SetEnv where you create the variable and give it value?

[jraute]

[glsmith]

Well, if BUILD_HOST does not already exist in Windows [1] (you set it in there manually or some other way) then you cannot pass an environment variable that does not exist.

I just tested it knowing full well I do not have BUILD_HOST in my Windows environment and this is what I get;

[Wed Aug 12 00:27:29.553800 2015] [env:warn] [pid 3072:tid 612] AH01506: PassEnv variable BUILD_HOST
was undefined

So, I think what was actually used in the OPs 1.3.9 (wow is that old) was SetEnv or they were running Win98 when there were not separate user/system environments. Or they are trying to pass a user land envvar [2]

SetEnv BUILD_HOST "some value"

[1] The environment variables in Windows like PATH and COMSPEC can be found in
control panel -> system -> {advanced system settings ->} advanced tab -> environment variables button.

Depending on the version of Windows the {} stuff is not there (begining in Vista, extra steps = better productivity)

[2] There is user and system variables. Only the system variables can be passed when Apache is running as a service.

[jraute]

Good to know, thanks, but then i was not that wrong