apache - Using "require group" with mod_authn_dbm in Apache HTTPD 2.4

Question

I am using Apache HTTPD 2.4 and I've decided it's time for me to move from mod_authn_file to mod_authn_dbm. I've got it mostly working but it won't check my AuthDBMUserFile for group information. I've googled it and it appears that this kind of functionality should still be available, via mod_authz_dbm which I've now included. The documentation for mod_authz_dbm makes it appear that you just have to use the AuthDBMGroupFile directive as in my configuration below:

<Directory "C:/Apache24/site/requests">
AuthType Basic
AuthName "Secure Area"
AuthBasicProvider dbm
AuthDBMUserFile site/data/users
AuthDBMGroupFile site/data/users
Require group admin
</Directory>

(Don't worry, site/data is not accessible via the webserver!)

However, even though the directive is clearly known (httpd -t doesn't complain and the server starts OK), it is either being ignored or something else is trying to find a different group file. The error I see in the log file is:

AH01664: No group file was specified in the configuration

Does my configuration look incomplete somehow?

Answer 1

I have an answer via the Apache HTTPD Users Mailing List courtesy of Eric Covener, who says:

mod_authz_dbm responds to Require dbm-group (and dbm-file-group) only in 2.4 which seems to be a change from 2.2.

So my configuration should have been:

<Directory "C:/Apache24/site/requests">
AuthType Basic
AuthName "Secure Area"
AuthBasicProvider dbm
AuthDBMUserFile site/data/users
AuthDBMGroupFile site/data/users
Require dbm-group admin
</Directory>

I have tried this and it does exactly what I wanted. Many thanks Eric!