varnish crashes

[Angelo Höngens]

On 23-1-2010 13:02, Poul-Henning Kamp wrote:
> In message <4B5AD8B0.6090103 at netmatch.nl>, =?ISO-8859-1?Q?Angelo_H=F6ngens?= wr
> ites:
> 
>> By the way: the balancers do a total of 2000 req/sec now, but when
>> stresstesting I can easily get 9000 cache/hits persec. So I don't think
>> it's hanging on the upper limits of its performance.
> 
> At that level of load, make sure to kldload the http accept filter.

Thanks, after doing some reading, I loaded accf_data and accf_http..


> Your varnish-stat looks pretty OK.
> 
> Have you configured health-polling of all those backends ?

Not explicitly no..

I have haproxy running on these machines as well for over a year, with
the 200-300 backends, each bound on a local port. These do health
checking to backend nodes, and if they are down haproxy presents a
pretty looking 503 page specific for that project.

In Varnish I have only configured backends like this.

backend backend8001 {
  .host = "localhost";
  .port = "8001";
}
backend backend8002 {
  .host = "localhost";
  .port = "8002";
}
..
 else if (req.http.host == "blabla.sitea.com") { set req.backend =
backend8001; }
  else if (req.http.host == "blabli.sitea.com") { set req.backend =
backend8001; }
  else if (req.http.host == "blabla.siteb.com") { set req.backend =
backend8002; }
  else if (req.http.host == "blabla.sitec.com") { set req.backend =
backend8002; }


I know I could do this all in my vcl, but then I would loose all the
haproxy advantages like the stats page, and increase the size of my vcl
to several megabytes.



-- 


With kind regards,


Angelo Höngens
systems administrator

MCSE on Windows 2003
MCSE on Windows 2000
MS Small Business Specialist
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