Re: LDAP initialize error with more than one server name

On Tue, Jun 29, 2010 at 02:55:16PM +0900, Christian Balzer wrote:
> 
> Hello simon,
> 
> sorry for not stumbling over this earlier but my test setup has just
> one server configured and I just ran into this trying a run on a
> (thankfully) standby machine in the production environment.
> Perdition is 1.18-2 (Debian Sid/Lenny backports).
> 
> If the LDAP URL has more than one LDAP server in it, queries fail with
> this:
> ---
> dbserver_get2: ldap_initialize: Bad parameter to an ldap routine
> ---
> Which had me rather stumped for a while until in one iteration I reduced
> things to one server. And no, version 2 or 3 make no difference. ^^
> 
> Working config line:
> ---
> m 3:ldap://localhost/ou=mail,dc=gol,dc=com?mailLocaladdress,mailServer?one?(uid=%s)
> ---
> Not working:
> ---
> m 3:ldap://localhost ldap.dentaku.gol.com/ou=mail,dc=gol,dc=com?mailLocaladdress,mailServer?one?(uid=%s)
> ---

I believe that in order to be able to specify more than one host
you need the following change, which was added after 1.18 was released:

"LDAP: Allow multiple space-delimited hosts in URI"
http://hg.vergenet.net/perdition/perdition/rev/89de734f919c

> And while I know you are not really involved with the LDAP bits, do you
> (or anybody else here) know how a hostname resolving to multiple IPs is
> treated? I.e, pick the first IP the resolver returns and if that is dead,
> this "host" is dead. Or try all IPs returned until one succeeds and if
> not, next server (if configured).

That logic should be in libopenldap somewhere.
Off hand I'm not sure what the logic is.
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