Upstream prematurely closed connection while reading response header from upstream,

Server NGINX
1

i get this error on nginx log periodically:

2009/11/20 16:37:15 [error] 65325#0: *100877 upstream prematurely closed
connection while reading response header from upstream, client:
69.63.178.251, server: XX.com, request: “POST /ping HTTP/1.1”, upstream:
“fastcgi://A.B.C.D8495”, host: “X.Y.Z”

nginx version: nginx/0.8.27
built by gcc 4.4.1 20090725 (Red Hat 4.4.1-2) (GCC)
configure arguments: --prefix=/opt/local --with-http_stub_status_module
–with-http_geoip_module --with-http_realip_module

how to fix this problem?
thank you!

2

Hello!

On Fri, Nov 20, 2009 at 04:43:49PM -0800, kevin wrote:

built by gcc 4.4.1 20090725 (Red Hat 4.4.1-2) (GCC)
configure arguments: --prefix=/opt/local --with-http_stub_status_module
–with-http_geoip_module --with-http_realip_module

how to fix this problem?
thank you!

Looks like your backend dies for some reason. You should fix
backend.

Maxim D.

3

On Fri, Nov 20, 2009 at 5:08 PM, Maxim D. [email protected]
wrote:

“fastcgi://A.B.C.D8495”, host: “X.Y.Z”

Looks like your backend dies for some reason. You should fix
backend.

maxim,
backend is not dead. they are still running.
the processes are alive.