Migrate dns zones from CentOS5 to CentOS7?

[cPanelLauren]

That sounds right, the biggest things you want to make sure of are

1. That the new server has all the zones
2. That the new server has the same DNS role to the other servers as the old one

Other than that there really shouldn't be too much more too it - as far as moving the IP address - any time you do a swap like this you'll want to ensure that you have a qualified system administrator or your provider assisting to ensure this goes smoothly.

 

[shrief mohsen]

@cPanelLauren
1-in case that the new server didn't get all zones so what is the best approach to make sure that the new server receives all the zones
2-if we change the roles of the server to act as a primary but something wrong happens and it is not working so what is the best approach to fix this

 

[cPanelLauren]

1-in case that the new server didn't get all zones so what is the best approach to make sure that the new server receives all the zones

Technically, it should if you're synchronizing the zones, what I mean here is that there are no errors or issues with synchronization.

2-if we change the roles of the server to act as a primary but something wrong happens and it is not working so what is the best approach to fix this

I'm not sure how that would happen but it'd really depend on what went wrong, this is a really simple modification and really just need to ensure that this server is the one passing the zone files to the others and not the other way around.