On Fri, 13 Feb 2004, JOHNSON DAVID R wrote: > Has anyone successfully clutered squid boxes? if so what did you use?
What kind of cluster are you looking for? Active-Backup, Farm of proxies, Active-Active, Farm of proxies, etc.. For Active-Backup type clustering any of the failover clustering methods for your platform will work fine. But there rarely is a need for Active-Backup type clustering of proxies as they do not contain valuable information, so most prefer having all cluster members taking their share of the load. The easies form of active-active clustering is the farm of proxies, using a proxy.pac script to direct the client to the appropriate proxy for the request, and cache peering between the proxies for cache balancing of clients not using proxy.pac and instead accessing the farm via a DNS-RR name. For Active-Active type clustering the best method (if not using the farm of proxies approach) is to use a load balancer infront of the proxies. You can optionally run the load balancer function on one of the proxies but I prefer having it on a dedicated box. Linux-Virtual-Server is a very good load balancer and easy to set up on any Linux flavor. Regards Henrik
