On Wed, 2006-03-08 at 13:35 +0100, carlopmart wrote: > Hi all, > > Somebody have tried to setup a postfix cluster service under RHCS 4? > Is it possible to mantain two postfix instances (one for node and > another to the cluster)? I have not tried it, and I am not familiar with configuring Postfix in the least, but here are some hints and gotchas which might exist ;) * Both instances will want to (by default) bind to INADDR_ANY. The two instances must be binding to specific IP addresses - i.e., one instance must bind to the host's IP, the other to the cluster floating IP - in order for two instances to start in the first place. * Both instances will want to deliver stuff in /var/mail ... and email readers want to read from /var/mail. Maybe the "RightThing(tm)" to do is something weird like the following. This is a complete shot in the dark... ;) - Cluster-mounted /var/mail (either GFS or not, it shouldn't matter) - Node-specific Postfix instances never deliver mail directly, but rather, they both forward to the cluster-instance Postfix IP. - All postfix instances may accept mail for sending off-site. This way, you don't have two instances of postfix both trying to manage the contents of /var/mail (do they play nicely together?), all instances of postfix can send mail, but only one does the ultimate receiving of mail. Also, if you use GFS for /var/mail, you may be able to run imapd on multiple cluster nodes, but I've never tried this either. As long as multiple people aren't accessing the same imap mailbox, I am guessing it would "just work" (famous last words, I know ;) ). -- Lon -- Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
