Webmin BIND failover configuration
Posted on 2012-09-11
I am just replacing our two aging BIND DNS servers used by our hosting department. I am starting from scratch and installing the latest build of Centos, with Webmin and BIND installed. I have configured two physically separate servers and configured one as a mast and one as a slave. However, i cannot work out how to do a couple of things!
Firstly - you are still able to delete the slave zone, at which point i cannot force the slave to re-sync with the master, other than by re-creating a salve zone and then it eventually talks.
Secondly - The previous systems experienced problems whereby if the mast server failed, after about an hour, the slave server would also stop resolving details and then required a reboot after the master was brought back online! I cannot find any information on how to stop this behaviour, or indeed if it was just due to the state of the configuration on these servers!. I have also tried testing the "convert to Slave/Master" options. When i convert the Slave to a Master, i can edit the zone, but the Master still stays as a master, and does not update with the changes from the newly converted zone. If i then convert back to a Slave zone, I get errors regarding not being a master - the only way i can fix this is to delete the zone completely and recreate a slave zone. I have tried configuring them both to replicate each other, but that seems to just confuse them further!
Can anyone help?