[quote:edb49a1f2e][i:edb49a1f2e]Originally posted by thaphantom[/i:edb49a1f2e] What s the best way to setup round robin dns in cpanel?[/quote:edb49a1f2e] [b:edb49a1f2e]Round Robin DNS is useful while you have a site with high-traffic and want to distribute this traffic between multiple servers[/b:edb49a1f2e] You have to configure Round Robin manually [b:edb49a1f2e]How to setup BIND for Round Robin DNS?[/b:edb49a1f2e] Enter multiple A records for the same host name pointing to different IP addresses in the primary zone file for the relevant domain like this: [b:edb49a1f2e]www 14400 IN A 10.20.30.40 10.20.30.41 10.20.30.42[/b:edb49a1f2e] To share the server load using a two-thirds to one-third ratio, enter one IP address on the list twice (2X) and a second IP address just once. Like this: [b:edb49a1f2e]www 14400 IN A 10.20.30.40 10.20.30.40 10.20.30.41[/b:edb49a1f2e] You have to configure httpd.conf on all of the machines (servers) for that domain and its relevant [b:edb49a1f2e] unique IP addresses [/b:edb49a1f2e] for each server. (It is recommended to setup them manually in each server) [b:edb49a1f2e]Cpanel powered servers:[/b:edb49a1f2e] Add your username and domain to your servers,(in WHM use Account Functions -& Create a New Account) then modify httpd.conf, proftpd.conf and DNS records manually. It is not recommended to setup Round Robin for email servers in the Cpanel. [b:edb49a1f2e]Round Robin for email Servers[/b:edb49a1f2e] For multiple email servers you can enter multiple MX records redirecting to different machines (servers), also you have to run mail transfer agent on each machine and configure them to receive emails and pass them to the users’ local mailbox or POP/IMAP mailbox. [b:edb49a1f2e]Round robin capability[/b:edb49a1f2e] If you have multiple servers with unique IP addresses, consider taking advantage of the round robin capabilities of IP profiles. Round robin configuration refers to a list of IP addresses that are assigned to a domain or hostname. Requests for the domain or hostname are distributed equally among the IP addresses on the list. This increases the stability of your server network by sharing the load. [b:edb49a1f2e]Round Robin DNS vs. Load Balancing[/b:edb49a1f2e] Round Robin does share the load equally among servers, however, it is different from what is commonly termed &load balancing&. Load balancing distributes connection loads across multiple servers, giving preference to those servers with the least amount of congestion. In Round Robin, server distribution remains on a rigid &one IP address to one user& rotating basis, but it still evenly distributes your server requests among your servers. [b:edb49a1f2e]Round Robin DNS Advantages and Disadvantages[/b:edb49a1f2e] One of the prime advantages of using Round Robin DNS is being able to take one of the server systems &out of the loop& for maintenance. Removing one of the entries on the list will have no effect on your visitors. However, be aware that if one system on your server list fails, it will appear to the user as intermittent failure because they will connect to the inactive server only a portion of the time.