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Questions tagged [geodns]

a DNS service that provides different answers to different clients based on a presumption of geographic locality.

14 questions
80
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11 answers

Multiple data centers and HTTP traffic: DNS Round Robin is the ONLY way to assure instant fail-over?

Multiple A records pointing to the same domain seem to be used almost exclusively to implement DNS Round Robin as a cheap load balancing technique. The usual warning against DNS RR is that it is not good for high availability. When 1 IP goes down…
Valentino Miazzo
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24
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5 answers

Geo-DNS providers?

We've got a website visited by users mainly in the USA and UK. The site will be run on servers in both these locations. We would like to use a DNS service to direct users to the nearest server, but can't find any. Does anyone have an recommendations…
Jason
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21
votes
3 answers

What is the difference between Anycast and GeoDNS / GeoIP wrt HA?

Based on the Wikipedia description of Anycast, it includes both the distribution of a domain-name-to-many-IP-mapping across many DNS servers as well as replying to clients with the most geographically close (or fastest) server. In the context of a…
Riyad Kalla
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3
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1 answer

How to host a single website on multiple geographically-diverse servers

I currently have 2 servers, using cPanel/WHM. The first one is a VPS hosted in London (we'll call it "international") and the second one is a dedicated server located in my country (we'll call it "local"). "local" will have unlimited local…
Prakash
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3
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1 answer

DNS setup for website on geo redundant servers

Let's say: I have a website written in English and shown on www.example.com. The website is on a US server now (based on cPanel/WHM) at the IP address 192.0.2.0. I can manage the DNS of example.com using a control panel to add/modify any records:…
Marco Demaio
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2
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1 answer

open source geolocation aware authoritative DNS server with edns-client-subnet support

geoip-enabled authoritative dns server is quite easy to find - bind9 with patch can do it, powerdns as well. but the problem starts when server receives DNS query from global public resolvers like google's 8.8.8.8. the request might come from ip in…
pQd
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2
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3 answers

How can I use dig(1) to test GeoDNS resolution for a specific IP?

There's a rumour that public domain name resolvers, like Google Public DNS, are still supposed to work with GeoDNS, because there's some field in the requests that lets them specify for which IP address they are doing a resolution, thus the…
cnst
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1
vote
3 answers

Server in China and non-Chinese Domain pointing to it?

I'm working for a startup and we're expanding into mainland China, hosting client data in a Chinese datacenter through a partner company in China. We have a website and backend API that mobile apps talk to. Here's the thing: Let's say we operate…
CDO DevOps
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1
vote
1 answer

AWS Route53 Geo Location with Failover

What I currently have is the following EC2x2 Instance in Tokyo (1 Proxy 1 Application) EC2x2 Instance in Singapore (1 Proxy 1 Application) With another another provider we have geo dns, so Tokyo users go to Tokyo instance and Singapore to…
Drifter104
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1
vote
1 answer

Could a Geo-DNS create availability issues?

Geo-DNS can be used to balance traffic across data-centers. I found this (old) article where it is described why Geo-DNS implies availability issues if one of the IPs (data centers) goes down. Could someone confirm or deny such…
Valentino Miazzo
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1
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0 answers

What is the difference between geo DNS policy and local subnet prioritization (netmask ordering)?

Starting with Windows Server 2016, MS DNS supports DNS Policies with "Geo-Location Based Traffic Management". But with older Windows Server versions I could configure local subnet prioritization (aka netmask ordering) to implement a similar…
bahrep
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0
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1 answer

Problems with CNAME In GeoDNS Setup

I'm trying to setup something similar to a CDN (Content Delivery Network) setup. What I want to do is use DNS records that return an A record based on where the user is geographically located. I was able to setup that using RAGE4 DNS. I can't really…
SameOldNick
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1 answer

In GeoDNS, Is it possible to have multiple A record for one US state

I am trying to setup GeoDNs and was wondering if I can add multiple server IPs to one US state to loadbalance it. I have 4 servers in total. 2 server will serve New York And the other 2 serve California Is this possible?
Damian Niels
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2 answers

How can I block a geo DNS host?

I am currently operating a free VPN service and lately I've been getting a lot of abuse emails from the Sony Playstation network saying that there is brute forcing coming from my server IPs against their users account API. Email Below: To whom it…
samgreeneggsham
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