[support] 2nd AD Server "rollover" not working with LDAP Integration Module

[Mark Shropshire]

Gary,

Our AD team setup one host that we hit and it round robins or load balances (not sure which honestly) between the AD servers. I know that doesn't answer your exact question, but if it is an option, it works well.. 

Thanks,
Mark

On Sep 1, 2011, at 10:10 AM, Broyhill, Gary wrote:

> I have been using LDAP Authentication Module (Drupal 6.x) successfully
> with our network's AD server for a couple of years, no problem. (note: I
> use an LDAP account with stripped down permissions for non-anonymous
> search).
> 
> So ... our sysadmin people just added a second AD server to our network
> for redundancy. They wanted me to test to see if Drupal's LDAP would work
> with both servers. I added the server in the LDAP Module configuration. It
> passed the authentication Test for non-anonymous search using my LDAP
> account mentioned above.  I can disable either of the servers from the
> Module settings, and authentication still takes place.
> 
> However, if either of the AD servers goes offline, Drupal's LDAP does not
> find the second server. The only way I can make it work is to go in to the
> LDAP settings and deactivate the server that went offline. According to
> documentation on http://drupal.org/node/118123, "the LDAP Servers will be
> consulted in the order they are listed. They are listed in the order they
> are created. Future releases will include an option to re-order them for
> authentication." This rollover doesn't seem to be happening, and I'm not
> sure where to go from here. Searched the issue queue but did not find this
> one.
> 
> Any enlightenment is welcome.
> 
> Gary Broyhill
> www.lr.edu
> 
> -- 
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