[Freeipa-users] Replication Issue

Rich Megginson rmeggins at redhat.com
Fri Apr 5 17:50:18 UTC 2013


On 04/05/2013 11:49 AM, Simo Sorce wrote:
> On Fri, 2013-04-05 at 09:51 -0600, Rich Megginson wrote:
>> On 04/05/2013 08:41 AM, Simo Sorce wrote:
>>> On Fri, 2013-04-05 at 08:30 -0600, Brent Clark wrote:
>>>> You were correct, my reverse DNS entries for the master and replica
>>>> were missing. Odd, since they both existed at one point.
>>> Rob,
>>> I think we should open a ticket against 389ds, we should never depend on
>>> PTR records.
>>>
>>> In this case I believe the ldap libraries are at fault since they now
>>> force SASL canonicalization on which is know to be broken for gssapi as
>>> it causes reverse resolution.
>>>
>>> Rich do you set LDAP_OPT_X_SASL_NOCANON in 389ds code at all ?
>> Yes.
>> ldap/servers/slapd/ldaputil.c:    ldap_set_option(ld,
>> LDAP_OPT_X_SASL_NOCANON, LDAP_OPT_ON);
>>
>> Should this be off by default?  Should this be configurable?
> On by default (meaning no canonicalization is performed) is the coreect
> behavior.
>
> I do not think we need it to be configurable for now.
>
> But it puzles me then as to why Brent sees a failure w/o ptr records.
>
> Does DS do reverse resolution of replication peers somewhere ?
Not explicitly, no, but probably somewhere inside openldap.
>
> Simo.
>




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