I've started using Ganglia to monitor my network. It uses multicast to exchange data between the cluster members, but the mailserver on the DMZ (which is t he other side of the Astaro to the rest of the cluster members) seems unable to talk to the rest. I've opened the relevant ports used, and can "telnet x.x.x.x 8649" without problems to gain the debug output. I've also created definitions and allowed the traffic on with side of the firewall to "talk" to 224.0.0.0/4, but still no joy.
Has anyone had any similar problems?
Has anyone got any suggestions (am I missing something obvious?)
Thanks in advance,
Karl
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