Re: slapd-ldap and Multiple URIs: Dealing with hosts that are down

[Jesus Jr M Salvo <jesus.m.salvo@gmail.com>]

On 23 October 2013 15:34, Philip Guenther
<guenther+ldaptech@sendmail.com> wrote:
> On Wed, 23 Oct 2013, Jesus Jr M Salvo wrote:
>> Using the meta backend, I have specified a list of LDAP URIs.
>>
>> I am testing what happens if the first URI becomes unresponsive ( e.g.
>> The host was shutdown, etc. ).
>>
>> So I deliberately put in a bogus URI as the first URI that I know will
>> not respond ( TCP SYN would be sent out by OpenLDAP, but no TCP ACK
>> coming back ):
> ...
>> timeout       10
> ...
>> With the above timeout setting, I was hoping that after 10 seconds,
>> OpenLDAP will try the next URI it the first URI did not respond ...
>> but it did not as per tshark capture below.
>>
>> What setting do I need to accomplish what I need ?
>
> man slapd-meta(5)
>        network-timeout <time>
>               Sets the network timeout value after which poll(2)/select(2)
>               following a connect(2) returns in case of no activity.  The
>               value is in seconds, and it can be specified as for
>               idle-timeout. If set before any target specification, it affects
>               all targets, unless overridden by any per-target directive.
>

I've tried that as well ... same thing. I was hoping that OpenLDAP
will detect that no TCP SYN/ACK was received, so that it tries the
next URI in the list. It does not even try the next URI in the list.