Is it possible to setup DNS point to 2 servers, one in Digitalocean another is in Linode?

Question

Is it possible to setup DNS point to 2 servers, one in Digitalocean another is in Linode? I hope the two servers compose a cluster.

Your comment welcome

Answer 1

Yes, this is possible. In the easiest case, you just point two A records to the IP addresses of the two machines und use them as Round-Robin-DNS.

This doesn't make them a cluster, though. Please explain what you hope to achieve.

Answer 2

Yes, it is possible and called DNS Round Robin, but it might not be as good for load balancing as you wish:

DNS roundrobin is excellent to increase capacity, by distributing the load across multiple points (potentially geographically distributed). But it does not provide fail-over.

Answer 3

Yes. Provider diveristy is actually a very good thing. When one receives a DDoS, the other has a chance of surviving. Businesses are doing this more and more with CDN's and DNS providers these days.

Public DNS servers are not typically considered to be clusters; in that, they don't need to talk to each other unless one is a slave of the other. That is not so much an aspect of clustering as it is data replication. If you have a "hidden master" or use an API to keep your DNS servers up to date, then both would be considered a slave or a master respectively.