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Re: resolver directive doesn't fallback to the system DNS resolver

January 07, 2015 06:38PM
This is what i have.

http {
server {
listen 443;
location ^~ /zss
{
proxy_pass https://www.example.com$request_uri;
}
}
}

Now as per http://gc-taylor.com/blog/2011/11/10/nginx-aws-elb-name-resolution-resolvers/, If you are running nginx as a proxy in front of An Amazon Web Services Elastic Load Balancer (ELB) which is the case for me, it is not safe to merely define an upstream using the hostname of ELB and call it a day. Although i don't want to use this resolver directive here and instead just want nginx to use the system DNS resolver (from /etc/resolv.conf). Is there a way to achieve this ?

Thanks
-Kunal


From: "Francis Daly" <francis@daoine.org>
To: nginx@nginx.org
Sent: Wednesday, January 7, 2015 3:14:17 PM
Subject: Re: resolver directive doesn't fallback to the system DNS resolver

On Mon, Jan 05, 2015 at 05:04:52PM -0600, Kunal Pariani wrote:

Hi there,



015/01/05 14:24:13 [error] 22560#0: *5 no resolver defined to resolve ...

Seems like nginx is not falling back to the system DNS resolver in case the 'resolver' directive is not used. Isn't this incorrect behaviour ?




==
events {}
http {
server {
listen 8080;
location /one {
proxy_pass http://www.example.com;
}
}
}
==

Works for me.

What config file shows the problem that you report?

(If the above fails for you, then it may be worth examining external parts.)

f
--
Francis Daly francis@daoine.org

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Subject Author Posted

resolver directive doesn't fallback to the system DNS resolver

kunalvjti January 05, 2015 06:06PM

Re: resolver directive doesn't fallback to the system DNS resolver

kunalvjti January 07, 2015 03:50PM

Re: resolver directive doesn't fallback to the system DNS resolver

Francis Daly January 07, 2015 06:16PM

Re: resolver directive doesn't fallback to the system DNS resolver

kunalvjti January 07, 2015 06:38PM

Re: resolver directive doesn't fallback to the system DNS resolver

Francis Daly January 07, 2015 07:16PM

Re: resolver directive doesn't fallback to the system DNS resolver

Yichun Zhang (agentzh) January 07, 2015 07:32PM

Re: resolver directive doesn't fallback to the system DNS resolver

kunalvjti January 12, 2015 04:50PM

Re: resolver directive doesn't fallback to the system DNS resolver

Yichun Zhang (agentzh) January 12, 2015 05:20PM

Re: resolver directive doesn't fallback to the system DNS resolver

kunalvjti January 12, 2015 05:56PM

Re: resolver directive doesn't fallback to the system DNS resolver

itpp2012 January 13, 2015 04:58AM

Re: monitor upstream IP addr changes without using nginx's resolver

kunalvjti January 16, 2015 02:18PM

Re: monitor upstream IP addr changes without using nginx's resolver

itpp2012 January 16, 2015 02:59PM



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