getting intermittent '502 bad gateway ' error.

[Maxim Dounin]

Hello!

On Sat, Aug 02, 2014 at 05:09:54AM -0400, shobhit wrote:

> We are using nodejs(v 0.10.29 ) ,express,nginx( version 1.4.6) with
> mongodb(v 2.6.3) replicaset and getting intermittent 502 bad gateway error.
> pm2 logs is unable to log error though nginx aerror.log is showing 
> 
>     recv() failed (104: Connection reset by peer) while reading response
> header from     upstream, client: xxx.xxx.xxx.xxx, server: somedomain.com,
> request: "GET /img/abc.png HTTP/1.1", upstream:
> "http://127.0.0.1:3000/img/abc.png", host: "domain.com", referrer:
> "http://domain.com/admin/"

This means that the connection was reset by your backend.  You 
have to look into the backend to find out what goes on there.

-- 
Maxim Dounin
http://nginx.org/