On 30/11/2007, Matt Shields <mattboston at gmail.com> wrote: > LVS is a group of tools that do a lot of different things, the two > that you are interested in are: > > - heartbeat - provides failover if you have two nodes (active/active > or active/passive) > - ipvsadm/ldirectord - provides load balancing (ie. http(s) load > balancer in front of multiple web servers) > > As stated in a previous post we have a number of these setup in our > network and we handle a lot of traffic. Some we're using for http(s) > traffic, others smtp/pop/imap, others mysql (read only queries off > replicas). There's no end to what what you could use heartbeat or > ipvsadm/ldirectord or both for. Both packages can be installed from > dag's repo. Thanks. What platform are you using? Mine is CentOS 5 on x86_64. It runs as a Xen DomU but from what I read on the linux-ha users mailing list this shouldn't be the issue. The production system will run on the bare metal (not under Xen). My experience with LVS at a previous workplace (a very large ISP) was also excellent - they had a couple of LVS servers in front of hundreds of mini-clusters (each such cluster service its own web or other network application, sometimes sharing disks using DRBD). The difference, I suspect, is that I'm trying this now with version 2.1.2 on CentOS 5 and x86_64, as opposed to possibly older version of everything (RedHat version, LVS, hardware (i386)). Thanks for your input, --Amos