Search Again: Re: Quickdns-Talk Digest #1578 - 23/09/03 From: Len Conrad Date: Wednesday, September 24, 2003 Time: 1:53:25 am >a1) >How does one setup Quick DNS Name Server/s so that if >a webserver is down they direct to a backup address. some "controller" has to detect or be told that a server is down, and the controller dynamically update the zone of the server's A record to a new IP address. This is using dynamic DNS for failover. The A records will have to have a short TTL so when the A record is changed, the effect of DNS caching will me minimized. >a2) >Alternatively choose the one of several web servers that responds first. some agent in the web servers senses server load reports the load factor to the controller, that dynamically updates the A record in DNS to the server that is least loaded. this is using dynamic DNS zone for load balancing. >b) And how is this accomplished with mail servers. exactly the same way. Len

Messages In This Thread: Re: Quickdns-Talk Digest #1578 - 23/09/03 by Kaj Hjorth on Sep 23, 2003 at 10:24:47 pm Re: Quickdns-Talk Digest #1578 - 23/09/03 by Len Conrad on Sep 24, 2003 at 1:53:25 am Re: Quickdns-Talk Digest #1578 - 23/09/03 by Men & Mice Support on Sep 24, 2003 at 11:16:48 am