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.
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3 Answers
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.
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I used nodejs compose of cluster which do not need Ngnix/Haproxy to be proxy server and make auto balance. I hope if one server is down, fail-over auto transfer to another May 13, 2017 at 19:27
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.
answered May 13, 2017 at 7:26
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.
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Thanks, having a "hidden master" or using an API to keep your DNS servers up to date is a solution, but updating DNS and activating needs 5 minutes, I prefer fail-over May 13, 2017 at 19:46
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What needs activating and 5 mins? Each server listed in the root servers will be live 100% of the time.– AaronMay 13, 2017 at 20:38