Has anyone here tried migrating DNS servers?
I mean, we are currently running 1 master and 1 slave dns servers running Red Hat 9. The hardware are just Desktop type Pentium 4 computers and no RAID, no backups!
The situation is really bad although the dns service and requests are still running smoothly, the slave dns hard drive starts to show signs of failure.
I don't want to wait for them to fail completely so I'm considering to create new dns servers with Ubuntu 12.04.
Any suggestions on how to configure and test a DNS server? I don't want to just replace the old servers and expect the new ones to takeover with no problems.
Also, how will you migrate? In terms of IP address and hostnames, will you shutdown the old ones, and use their IP address as you turn on the new ones? Is it that simple?
Any advice is appreciated.