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Re: proxied requests hang when DNS response has wrong ident

Jason Woods
August 18, 2014 06:42AM
Hi,

On 16 Jul 2014, at 03.01, Pramod Korathota <pkorathota@atlassian.com> wrote:

> On 15 July 2014 21:41, Ruslan Ermilov <ru@nginx.com> wrote:
>
>
> diff --git a/src/core/ngx_resolver.c b/src/core/ngx_resolver.c
> --- a/src/core/ngx_resolver.c
> +++ b/src/core/ngx_resolver.c
>
> <snip>
>
> Thanks for the quick response and patch, Ruslan. I have tested a build incorporating this patch, and it behaves as expected, the resolver retrying rather than blocking behind the first request.
>
> I will get this build out to our production environment this week. Will report back if there are any issues.
>
> Thanks again!
>
> Pramod,
> _______________________________________________
> nginx mailing list
> nginx@nginx.org
> http://mailman.nginx.org/mailman/listinfo/nginx

I'm experiencing a similar issue.

I get a couple of ident mismatch errors in the error log, and then gradually over time I begin to see thousands of ESTABLISHED connections stuck with no activity.
Eventually worker_connections is exhausted. I believe it could be related to this.

I'm using package nginx-1.6.1-1.el6.ngx.x86_64, which is the latest stable. Has this fix been ported to 1.6.x stable yet?
Is there a workaround?

Thanks,

Jason_______________________________________________
nginx mailing list
nginx@nginx.org
http://mailman.nginx.org/mailman/listinfo/nginx
Subject Author Posted

proxied requests hang when DNS response has wrong ident

Pramod Korathota July 15, 2014 06:06AM

Re: proxied requests hang when DNS response has wrong ident

Ruslan Ermilov July 15, 2014 07:42AM

Re: proxied requests hang when DNS response has wrong ident

Pramod Korathota July 15, 2014 10:02PM

Re: proxied requests hang when DNS response has wrong ident

Jason Woods August 18, 2014 06:42AM

Re: proxied requests hang when DNS response has wrong ident

Valentin V. Bartenev August 18, 2014 07:08AM

Re: proxied requests hang when DNS response has wrong ident

Jason Woods August 18, 2014 08:46AM

Re: proxied requests hang when DNS response has wrong ident

B.R. August 18, 2014 09:18AM

Re: proxied requests hang when DNS response has wrong ident

itpp2012 August 18, 2014 09:19AM

Re: proxied requests hang when DNS response has wrong ident

Valentin V. Bartenev August 18, 2014 09:24AM

Re: proxied requests hang when DNS response has wrong ident

Jason Woods August 18, 2014 10:56AM



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