load balancing depending on actual load

[Martin Minka]

This is not bad, but I would need to add to my scripts check about the 
actual load (overhead).
I would prefer if Nginx would be able to receive message from "dynamic 
servers".

Benefits would be:
* web application could manipulate how server should be loaded
* any script could exclude the server from LB. for example if I would 
run script to get new code from SVN, I would first inform nginx to stop 
to use the server and after all code is refreshed I would put myself 
back to LB
* any LB strategy could be easy implemented

It would be also great, if there would be a way how to confiure Nginx to 
stop to use the server for some time (for example 10 sec) or infinite.

Nobody else would need such functionality ? Or has somebody better idea 
for optimal load balancing ?

Best regards,
Martin Minka


Manlio Perillo wrote:
> Martin Minka ha scritto:
>> Hello,
>> is there a way or is there plan to automatically change weight for 
>> server in upstream depending on actual system load ?
>>
>> I have different HW on 7 apache web servers and it is nightmare to 
>> optimal set the weights.
>>
> 
> Not sure, but one of your backend can simply return a 503 response code 
> when the system load is high.
> 
> nginx, then, will proxy the request to another backend:
> http://wiki.codemongers.com/NginxHttpProxyModule#proxy_next_upstream
> 
> 
>> Sincerely,
>> Martin Minka
>>
> 
> 
> Regards  Manlio Perillo
> 
>