The ideal way to monitor the health of the real servers is to to have a dedicated monitoring system in place such as Nagios. However this isn’t always an option, so for some they require the loadbalancer to send an alert...
As of haproxy-1.6-dev1 it is now possible to send email alerts directly from HAProxy thanks to the excellent work done for us by Simon Horman...
Transparent mode with HAProxy allows you to see the IP Address of the clients computer while still having a high availability service using HAProxy...
I get quite frustrated with benchmarks because they are very hard to perform properly, and even when you do them properly its very hard to get any useful data from them...
When you have users depending on Windows Terminal Services for their main desktop, it's a good idea to have more than one Terminal Server. RDP, however, is not an easy protocol to load balance...
I've previously blogged about how to get TPROXY and HAProxy working nicely together, but what if you want to terminate SSL traffic on the load balancer to use HAProxy to insert cookies in the standard HTTP stream to the backend servers?..
If you use HAProxy as the load balancer then all of the backend servers see the traffic coming from the IP address of the load balancer...
Standard Kernel builds of LVS (Linux Virtual Server) don't have the ability to load balance traffic that is from the local node...
