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Re: HAProxy randomly returning 502s when balancing IIS

Posted by Willy Tarreau 
Willy Tarreau
Re: HAProxy randomly returning 502s when balancing IIS
August 31, 2009 09:10PM
Hello,

On Mon, Aug 31, 2009 at 11:30:16AM -0700, Hank A. Paulson wrote:
> I was also getting a lot 502s from Varnish, I had hoped by ignoring them
> they would go away. I don't want to check if they are still there because I
> think it might be too soon.

which version ? One such issue was found and fixed in 1.3.20. Also, in
Miguel's case, it happens that some link load-balancing was causing
packets to be reordered and the server on the other side to send an
RST too fast (it closes then sends an RST, but the RST is received
before the last packet due to the link LB).

Willy
Hank A. Paulson
Re: HAProxy randomly returning 502s when balancing IIS
August 31, 2009 09:40PM
It was .18 then .19 and I just switched to 20 a couple days ago, so I will
check later tonight.

On 8/31/09 12:01 PM, Willy Tarreau wrote:
> Hello,
>
> On Mon, Aug 31, 2009 at 11:30:16AM -0700, Hank A. Paulson wrote:
>> I was also getting a lot 502s from Varnish, I had hoped by ignoring them
>> they would go away. I don't want to check if they are still there because I
>> think it might be too soon.
>
> which version ? One such issue was found and fixed in 1.3.20. Also, in
> Miguel's case, it happens that some link load-balancing was causing
> packets to be reordered and the server on the other side to send an
> RST too fast (it closes then sends an RST, but the RST is received
> before the last packet due to the link LB).
>
> Willy
>
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