Hello,
We are evaluating qmail-ldap for an ISP installation.
We need a qmail cluster situated behind a F5 balancer.
We are going to distribute domains between two different
qmail instances situated in different machines (p.e mx1.domain.com
and mx2.domain.com).
Maildirs are on a two SAN partitions. Each machine manages
its partition where maildirs associated to controlled domains are.
1. Both machines active.
Qmail-LDAP-Cluster is interesting when both machines are up. Mailhost
attribute tell in which machine (mx1 or mx2) maildir is. If balancer
carries the session to a wrong qmail (where maildir is not mounted),
QMQP transfers SMTP/POP3/IMAP session to the right instance of qmail.
Notice that ldapclusterhost file can not have
both machine names (mx1.domain.com and mx2.domain.com) because
in that case, session is not transfer between qmail instances.
2. One machine is down.
At this moment, both partitions are mounted on the active machine. So,
only one Qmail must manage all domains. Ldapclusterhost files should be
used in this moment. Now Ldapclusterhost should has mx1.domain.com and
mx2.domain.com.
We think that the same script that mount the partition in the active
machine, changes the content of Ldapclusterhost file. But I'd like to
ask if someone has a similar scenario or qmail-ldap-cluster let do a
backup cluster in an automatic way, using only control files.
Thanks in advanced.
Regards.
--
___________________________________________
Antonio M. Guirado Puerta
Sistemas de Información y Comunicaciones
Fundación Integra. http://www.f-integra.org
Teléfono: +34 968 355161
Fax: +34 968 355131
Correo: antonio.guirado@f-integra.org
___________________________________________
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