I have created a domain www.cfcoding.com and when creating the site, I selected * for the IP address since I have my server configured for .68 and .69 IPs that I have set from my ISP. When creating the DNS record for www.cfcoding.com, it only gave me the option to enter in 1 up (unless I can enter in a list?). The idea is for me is if ns1.tbtech.net seem to be down, I would like it to try and resolve to ns2.tbtech.net which would be my other IP. Is that possible with the way the DNS is setup or am I thinking of a completely different piece of software/hardware to handle this? Here is my wizard configuration of my domain:
First, DNS Zones normally dont start with www. So make sure that you created a dns zone for cfcoding.com and not for www.cfcoding.com. www.cfcoding.com is a A-Record of the zone cfcoding.com and not a separate zone. You can do round robin DNS, this means that you add more then one DNS A-Record for a given domain or subdomain pointing to different IP addresses. But round robin DNS is more a solution for load balancing and not for failover setups, as the client will get a error message if one of the IP addresses dont respond. For a failover setup, you use software like this: http://www.howtoforge.com/setting-u...ancer-with-haproxy-keepalived-on-debian-lenny http://www.howtoforge.com/loadbalanced_mysql_cluster_debian http://www.howtoforge.com/load_balancing_apache_mod_proxy_balancer which polls the different servers from time to time to check if they are online.
Awesome, thanks. I did catch my error with the zoning and added 2 A-records for domain.com and 2 for www. The thing is, I have 2 IPs but they are on the same server so if the server is down it doesn't have a way to failover. I was aiming for the round-robin idea with the IPs since I have 2 separate cable modems and if 1 modem went down, maybe the other one is up (unless my entire cable system goes down). Thank you!
Also, I realzed that looking at the zones in the image above, the A, MX, and NS records all have a period at the end. Should that be there or does it not matter either way?
The period must be there. If you have a fully qualified domain name in dns e.g. www.yourdomain.com, it ahs to end with a dot. Of a record does not end with a dot, then its a relative domain name and the name of the zone gets appended to it. So in a zone cfcoding.com, these two A-Records are the same: www 123.123.123.123 www.cfcoding.com. 123.123.123.123 This naming convention is used by all major dns servers incl. BIND and mydns.
