If you are wanting to increase availability, you should run two instances of HAProxy in a HA configuration with keepalived to present a single instance.
Whether you use shared storage, or a method to sync between two storage locations doesn't affect HAProxy, and might be better addressed elsewhere. Cheers Arne Sent on the move On 20 Feb 2013, at 12:42, annb annb <[email protected]> wrote: > Hi list! > > I am running a website with several thousand of images on a Mac Mini. I have > done that for about a year but I feel that I need something more secure then > a single Mac mini and a WD elements external USB drive for the images. If my > Mac Mini goes dow for example the website is gone and that is not acceptable. > > I want to build a solution with HAPROXY. I want to add more Mac Minis in the > future running Round Robin. I am thinking of buying a Synology NAS of some > kind to store all images. Maybe with 10 harddrives to begin with and expand > when I need to. Later on I will build a similar system in a different > geographical position. Lets call these two system A and B. > > Lets talk about system A. > I understand that I need at least 3 Mac minis to make this happen. Mac mini 1 > running HAPROXY (round robin). Mac mini 2 and 3 running the website. So if > Mac mini 2 or 3 goes down for some reason the other one will continue run the > website. It will also be much easier to upgrade one Mac mini if I can just > shut it down and the other one will still run the website. > > I think I understand the concept of HAPROXY so far. Now to the part I don't > understand. > > Do I need a storage array for every Mac mini I have (Mac mini 2 and 3) or > should they share a single storage array? I have been looking at ISCSI and it > seems to be the way to go but I have just learn that it can only be one > initiator connected to the same target at the same time. > > Lets talk about system B. > If I build a similar system like A but on a different geographical position, > how should system A and B interact with each other (with HAPROXY) to make > everything secure? Can I continue to use HAPROXY and round robin takes care > of 4 Mac minis? > > I have more questions but let's start here and see where it takes me.
