Can DNS resolve to multiple IPs?

DNS can hold multiple records for the same domain name. DNS can return the list of IP addresses for the same domain name. When a web-browser requests a web-site, it will try these IP addresses one-by-one, until it gets a response. Web-application servers should be stateless to make the job of load-balancers easier.

Can one domain point to many IPs?

Yes, that is possible, and will need to be two A records. This is called Round-Robin DNS. Clients will semi-randomly use one of the two addresses. 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.

How do I remove DNS entry from DNS?

In the display pane, locate and select the resource records that you want to delete. Right-click the selected records, and then click Delete DNS resource record. The Delete DNS Resource Record dialog box opens. Verify that the correct DNS server is selected.

Can two domains have the same IP?

It is not possible to provide two domain names for the same Server IP address and get two different SSL certificates (one for each domain name). Also note that the use of Host Headers (which is how you can use a single IP for more than one SSL enabled domain) is not recommended for E-Commerce sites.

How do I remove preferred IP?

Double-click Internet Protocol Version 4 (TCP / IPv4). Click Advanced. In the IP Addresses section, click the desired IP address. Click Remove.

Is there a DNS host with multiple IPs?

I have a server that has two NICs on two separate subnets on separate vlans. The DNS server has an Host entry for each NIC. We’ll say it’s ServerA 192.168.0.10 and ServerA-Alt 192.168.1.10.

Can a DNS resolve to more than one IP?

A local DNS (usually a FQDN) for only private LAN IPs mapping to local computer names may be a simple 1-to-1 lookup. But even those tend to cache external public lookups with its own set of TTL values as to how often the cache gets updated.

Can a single a record have multiple IP’s?

Yes you can have multiple IP’s for the same A record. There’s a few problems with this if used for redundancy purposes… DNS servers and DNS resolvers randomly choose the order of the list of IPs – even though you might configure it a certain way on your DNS Server hosting the zone, resolvers will flip it.

Is there a way to ping both IPS?

You can ping either ip address from their corresponding network. The problem is that on the DNS server there is only one record for ServerA, but it is responding with both IP addresses using round robin. Due to needed configuration netmask ordering will not help.

Can DNS resolve to multiple IPS?

DNS can hold multiple records for the same domain name. DNS can return the list of IP addresses for the same domain name. When a web-browser requests a web-site, it will try these IP addresses one-by-one, until it gets a response. Web-application servers should be stateless to make the job of load-balancers easier.

Is DNS a load balancer?

DNS Server Load Balancing is an architecture where Domain Name System (DNS) servers are placed behind a Server Load Balancing system. DNS requests are distributed, or load balanced, across a group of DNS servers. This provides a highly available and high performing DNS infrastructure.

How does a DNS load balancer work?

How DNS Load Balancing Works. DNS load balancing relies on the fact that most clients use the first IP address they receive for a domain. In most Linux distributions, DNS by default sends the list of IP addresses in a different order each time it responds to a new client, using the round‑robin method.

Can you have multiple A records DNS?

You can do a lot with A records, including using multiple A records for the same domain in order to provide redundancy and fallbacks. Additionally, multiple names could point to the same address, in which case each would have its own A record pointing to that same IP address. The DNS A record is specified by RFC 1035.

What can DNS load balancing do for You?

The end result is that by using DNS load balancing, you can achieve a fairly rough balance of traffic between multiple TCP load balancers, which can manage applying load to your application servers at a more granular level:

How to get the EIP of a load balancer?

If the address configured is the IP address of an instance or two IP addresses of two instances it will return that. If the configured IP address was the Elastic IP assigned to ELB, nslookup (and getaddrinfo) will return the EIP of the ELB.

Why does a load balancer have multiple IPs?

The reason why a load balancer offers multiple addresses is basically to provide a fallback, cover different availability zones (if you would have 3 instances in 3 different availability zones, you would see 3 IPs) etc.

How are the IP addresses returned in DNS?

The order in which IP addresses are returned varies by the DNS server and provider used but often follows a round-robin or geographically specific algorithm. The idea here is that different clients will get different ordered lists of IP addresses corresponding to your domain name.