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Re: "control unavailable in context" error even while using back-bdb
On Thursday 23 June 2005 20:06, Prakash Velayutham wrote:
> Hi All,
> I am struggling to get a client machine to authenticate against an
> openldap server. Any help greatly appreciated.
> Server OS - SuSE 9.2 Pro
> OpenLDAP - openldap2-2.3.3beta-0.1 (using a binary rpm from SuSE mirror)
Note: OpenLDAP 2.3.4 packages are available at
(and the mirrors).
> This version of OL is supposed to support ppolicy schema and that is the
> main reason I am testing it. Here are some observations that I have
> made, please correct me if I am wrong.
You are correct.
> The default backend database is BDB. But if the checkpointing directive
> is enabled with BDB, slapd server segfaults (invariably). If I disable
> this directive, issue goes away.
This was a problem with the default slapd.conf in our packages. Just move the
"checkpoint" line below the "suffix" line. OpenLDAP from current CVS already
issues an error message about this:
/etc/openldap/slapd.conf: line 70: "checkpoint" must occur after "suffix"
This seems to be new in OpenLDAP 2.3. Fixed packages are on their way to the
> If I change the backend to LDBM (as
> that is what I use in my current production OpenLDAP server), then there
> is no segfault issue, but looks like only back-bdb or back-hdb can
> handle pagedResultsControl, so I decided to stick with BDB.
> I can successfully do a "ldapsearch" to the server, but I can't
> authenticate against it. The following lines can be seen in the server's
More details about the request that caused this behaviour would be helpful.
But first you should try again with 2.3.4 packages.
> Jun 20 11:54:57 huttonlinux slapd: conn=3 op=2 RESULT tag=97
> err=53 text=control unavailable in context
> A detailed log (-d 9) gives this:
> slap_global_control: unavailable control: 18.104.22.168.22.214.171.124.126.96.36.199
> (seems to be ppolicy related control)
> send_ldap_result: conn=16 op=2 p=3
> send_ldap_response: msgid=3 tag=97 err=53
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