20 One Domain Name To Multiple Ip Address In This Year

The certificate is not tied to the ip address only to the domain name so if it is installed on both servers there should be no issues with ssl.
One domain name to multiple ip address. After all if mi. This is called round robin dns. That has the same format as etc hosts file and list all ip addresses with name in this file.
You can have multiple a records using the same name that point to different ip addresses for example. In name based virtual hosting also called shared ip hosting the virtual hosts serve multiple hostnames on a single machine with a single ip address. The dns server can also re order the list of addresses in an attempt to influence choices a host wo.
Essentially by making it so that all 3 different web addresses show the same. How to assign multiple fixed ip address for one domain. The link you include in your question goes into the technical details of how you can do this but the reason for doing it is pretty simple.
The host receiving the reply can pick one using any method it wants. Yes that is possible and will need to be two a records. That want need is common enough.
Say you have a website that you never want to go offline. Ask question asked 7 years 11 months ago. No an a record can only point to one ip address.
It s actually very common for a dns reply to contain multiple ip addresses. Search engine ranking consequences. This method of doing things creates a search engine problem popularly called content duplication i have written about this in the past and one place you can find more information on this is from the how to create a search engine friendly website article.