On 2011-10-19 18:00, Paul O'Rorke wrote: > after thinking this through and doing a little reading it occurs to me that > this will only help cache incomming mail until the primary MX mail server is > back up. What I want is servers mirrored in realtime, with failover. I > would have expected HA-Linux to be a good candidate for that.
It certainly is. Your key infrastructure components are DRBD+Corosync+Pacemaker[1]. How easy it is to integrate Exim there depends on how you're planning to deploy: 1. if you want to manage a single, highly available instance of Exim _and_ you have an LSB compliant init script, then you can just drop that in as a cluster resource. 2. if you want a single HA instance, but your init script is _not_ LSB compliant, you'll have to fix that, or write an OCF compliant resource agent for Exim. 3. if you need to manage multiple Exim instances in a single cluster, then an OCF resource agent is the only way to go. No such RA currently exists, but writing one is not rocket science and if you need help, such help is available on the market. Which of these best match your planned setup, and which distro are you on? Cheers, Florian [1] For a super quick synopsis on what these technologies are and what they're good for, please look at this: http://www.hastexo.com/knowledge/drbd http://www.hastexo.com/knowledge/corosync http://www.hastexo.com/knowledge/pacemaker -- Need help with High Availability? http://www.hastexo.com/now _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
