Here's what I have to work with:
- Root access to VPSes with different hosting companies that run CentOS only
- Two dedicated nameservers with over 100 zone entries
- Several webservers hosting the same content
The failover solutions I've found either require hardware, clustering in the same network, and other options that I can't access with my VPS setup. And paid DNS failover services are too expensive for the number of domains I have.
It seems implementing DNS failover myself is my best option, though the consensus is that it's not a very good option. Are there ANY other solutions I'm missing? Thanks.