I have been asked to rebuild our load balancing infrastructure in the data center.
The original request was to load balance FTP servers. I tried doing that using the current load balancer (
Piranha / LVS), but didn't get it up and running. Not just because there's little to none documentation for this software. Since
Piranha is considered deprecated, I went over to
HAProxy after a couple of days trying, which did the job in a fraction of time spent on
So I've got FTP load balancing (passive mode) in place. Now, I was asked to replace the whole Piranha Load Balancer in the data center. In the current Piranha configuration, we have several web servers, IIS servers....aaaand DNS.
No here's the thing:
HAProxy seems to be a commonly used LB, but it is not capable of handling
UDP load balancing. This is a bummer, since I like how
So I googled a lot and came across several things. Most people seem to use
LVS as a LB for DNS (TCP/UDP). Some use
dlbDNS, some use
lbnamed, and some use
netfilter / iptables.
Since I would want to stick with
HAProxy for FTP, HTTP, IIS servers, I got confused on using it side by side with
2 LB instances with failover
2 DNS servers (already existent) with failover
Multiple backend servers (http, application, etc...)
Is this possible? Is UDP load balancing on DNS servers even necessary? Is there any kind of resource that might show me how to get started with that? Or is there a LB solution that is capable to not only handle TCP/HTTP, but also UDP load balancing?
PS: The LB solution should be non-hardware and open source / GPL license / free of costs.
Any help or lead to respective resources is much appreciated!