i am asking this b/c i didnt have this hurdle in the past. i dont know if its my error or something is diff w/ newest zimbra os ver.
i have a running zimbra os ed 8.0.7 on ubuntu 10.04. my own hardware. public static IP from ISP. dns & mx all configured at registrar for domain.com & mail.domain.com. all working.
i want to migrate to zimbra os ed 8.0.7 on ubuntu 12.04 on a hosted vm, with a new public static IP from the cloud provider. probably use zextras migration tool to do it. afterward (or right before) issue dns/mx update w/ registrar so the 48-72 hr dns propagation begins. obviously i'm trying to time it to minimize mail server downtime during the migration.
i've done this in the past but i owned both the old & new server boxes then (not sure if that matters). today when i try to install zimbra on the cloud vm server, i get all the dns failure errors (ldap wont start etc). i have domain.com & mail.domain.com w/ the public IP in /etc/hosts, but the new zimbra install looks to dns & finds my current mail.domain.com server.
is there no way for me to install the zimbra server on the vm 1st, then issue the dns updates? i know the actual mail wont go to the new server for 48-72 hrs. but i cant even get the new server to just install zimbra. i dont recall it checking for dns/mx validity in past versions. or maybe i just forgot.
i dont need split dns & all that. its a public IP, not pvt. i just want min down time for the migration. i think i achieve that by installing the new server 1st w/o errors or issues, then submit dns updates, then shutdown old server & migrate data over w/ zextras tool.
am i wrong? is there a better way?