Re: domain based load balancing
On Thu, Dec 06, 2012 at 01:45:51PM -0500, Daniel Alfonso wrote: > balance hdr(host) > > it would round robin but sticky anything with the same value to first server > to get the request for that domain more precisely it would not round robin, it would hash the value of the Host header, and use the result to select a server. Regards, Willy
RE: domain based load balancing
balance hdr(host) it would round robin but sticky anything with the same value to first server to get the request for that domain -Original Message- From: Alexandre Biancalana [mailto:biancal...@gmail.com] Sent: Thursday, December 6, 2012 12:51 PM To: Willy Tarreau Cc: Daniel Alfonso; haproxy@formilux.org Subject: Re: domain based load balancing Hi Willy, Thank you for that great software ! On Wed, Dec 5, 2012 at 8:11 PM, Willy Tarreau wrote: > >> Is there a better way of accomplishing this? > > Have you thought about hashing the Host header (for example) ? Just an > idea, I don't know how that fits your need. Can you give an example of that idea ? Regards, Alexandre
Re: domain based load balancing
Hi Willy, Thank you for that great software ! On Wed, Dec 5, 2012 at 8:11 PM, Willy Tarreau wrote: > >> Is there a better way of accomplishing this? > > Have you thought about hashing the Host header (for example) ? Just an > idea, I don't know how that fits your need. Can you give an example of that idea ? Regards, Alexandre
Re: domain based load balancing
On Thu, Dec 06, 2012 at 04:55:42PM +0100, Baptiste wrote: > you could specify your domain across multiple lines: > acl foo hdr(Host) name1 name2 > acl foo hdr(Host) name3 name4 > etc... > > a logical OR is applied if ACLs share the same name. And if there are *that* many, load them from a file, it will be more manageable : acl foo hdr(Host) -f names.txt Cheers, Willy
Re: domain based load balancing
you could specify your domain across multiple lines: acl foo hdr(Host) name1 name2 acl foo hdr(Host) name3 name4 etc... a logical OR is applied if ACLs share the same name. cheers On Thu, Dec 6, 2012 at 4:09 PM, Daniel Alfonso wrote: > I can maintain it programmatically and was able to do it via hdr(dom) acl > match. > > I am running into an haproxy config limit of 2047 characters per line > > I'd like an acl to match a space delimited string of domains(potentially > hundreds). Any way to increase this limit? Is it an arbitrary limit imposed > by haproxy devs or is it a threshold that, if crossed, causes problems? > > -Danny > > -Original Message- > From: Willy Tarreau [mailto:w...@1wt.eu] > Sent: Wednesday, December 5, 2012 5:11 PM > To: Daniel Alfonso > Cc: haproxy@formilux.org > Subject: Re: domain based load balancing > > Hi Daniel, > > On Wed, Dec 05, 2012 at 02:18:15PM -0500, Daniel Alfonso wrote: >> Hello, >> >> I want to load balance hundreds (maybe thousands) of domains to a farm of >> web servers. >> >> I want each domain to only ever load on 1 webserver and stay there unless >> there is a failure. >> >> I'd like to break this up based on traffic load so all webservers are doing >> roughly the same work. >> >> Can this be done practically with just a ton of ACLs? > > Yes but maybe not much maintainable. > >> Is there a better way of accomplishing this? > > Have you thought about hashing the Host header (for example) ? Just an idea, > I don't know how that fits your need. > > Willy > >
RE: domain based load balancing
I can maintain it programmatically and was able to do it via hdr(dom) acl match. I am running into an haproxy config limit of 2047 characters per line I'd like an acl to match a space delimited string of domains(potentially hundreds). Any way to increase this limit? Is it an arbitrary limit imposed by haproxy devs or is it a threshold that, if crossed, causes problems? -Danny -Original Message- From: Willy Tarreau [mailto:w...@1wt.eu] Sent: Wednesday, December 5, 2012 5:11 PM To: Daniel Alfonso Cc: haproxy@formilux.org Subject: Re: domain based load balancing Hi Daniel, On Wed, Dec 05, 2012 at 02:18:15PM -0500, Daniel Alfonso wrote: > Hello, > > I want to load balance hundreds (maybe thousands) of domains to a farm of web > servers. > > I want each domain to only ever load on 1 webserver and stay there unless > there is a failure. > > I'd like to break this up based on traffic load so all webservers are doing > roughly the same work. > > Can this be done practically with just a ton of ACLs? Yes but maybe not much maintainable. > Is there a better way of accomplishing this? Have you thought about hashing the Host header (for example) ? Just an idea, I don't know how that fits your need. Willy
Re: domain based load balancing
Hi Daniel, On Wed, Dec 05, 2012 at 02:18:15PM -0500, Daniel Alfonso wrote: > Hello, > > I want to load balance hundreds (maybe thousands) of domains to a farm of web > servers. > > I want each domain to only ever load on 1 webserver and stay there unless > there is a failure. > > I'd like to break this up based on traffic load so all webservers are doing > roughly the same work. > > Can this be done practically with just a ton of ACLs? Yes but maybe not much maintainable. > Is there a better way of accomplishing this? Have you thought about hashing the Host header (for example) ? Just an idea, I don't know how that fits your need. Willy
