[clue] load-balancing

[David L. Willson]

Thanks Ryan, 

Here's the thing I need that might be hard, I need to be able to satisfy these assertions: 

For source networks A, B, and C, dest-node A is preferred, B is a usable standby, but dest-node C should never be tried (even if it's up). 
For source networks C, D, and E, dest-node C is preferred, B is a usable standby, but dest-node A should never be tried (even if it's up). 

Do you think HAProxy is up to that? 

-- 
David L. Willson 
Teacher, Engineer, Evangelist 
RHCE+Satellite CCAH Network+ A+ Linux+ LPIC-1 UbuntuCP NovellCLA 
Mobile 720-333-LANS(5267) 
http://sofree.us 

This is a good time for a r3VOLution. 

----- Original Message -----

> David,
> While I do not profess to be an HAProxy expert, we have used it to
> check most of the boxes on your list in the past.
> You can use the weight parameter on your backend servers to specify
> where the traffic is preferred – a value of 256 for your primary and
> 1 as your failover should accomplish what you are looking for.
> You can also write IP based ACL’s to set traffic from each network to
> specific backends.

> There are some limitations – HAProxy will only support TCP, and I
> have had issues with some ssl.

> Regards,
> Ryan Naef

> From: clue-bounces at cluedenver.org
> [mailto:clue-bounces at cluedenver.org] On Behalf Of David L. Willson
> Sent: Thursday, October 30, 2014 7:43 AM
> To: CLUE's mailing list
> Subject: [clue] load-balancing

> I am looking for an intelligent load-balancer. It needs to understand
> proximity / preference. I want to be able to send all the clients
> from (these networks) to this node, unless it's down, or
> fully-loaded, or otherwise uninterested in new connections, then
> send them to this node, instead.

> I don't mind if I have to setup the preference rules (which networks
> prefer which servers), but it would be cool if I didn't have to.

> I'd *strongly* prefer a solution that doesn't generate vendor
> lock-in. ie: I don't mind paying for it, but I'd like to preserve
> the freedom to choose *who* to pay.

> It would be really great if someone that has a lot of experience with
> HAProxy confidently said something like, "Oh yeah, it does all that.
> Just do this and this, and that, and it works great, lasts a long
> time, and you'll lose weight doing it."

> --
> David L. Willson
> Teacher, Engineer, Evangelist
> RHCE+Satellite CCAH Network+ A+ Linux+ LPIC-1 UbuntuCP NovellCLA
> *killed my phone on Sunday. This space for rent.*
> http://sofree.us

> This is a good time for a r3VOLution.

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