# Nginx: pread() "/opt/nginx" failed (21: Is a directory)

**URL:** <https://www.ruby-forum.com/t/nginx-pread-opt-nginx-failed-21-is-a-directory/226279>\
**Category:** NGINX\
**Created:** [April 28, 2012, 4:01am UTC](https://www.ruby-forum.com/t/nginx-pread-opt-nginx-failed-21-is-a-directory/226279 "2012-04-28T04:01:24Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![GrayS\_SteveS\_Wipro](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/ccd318/32.png) [@GrayS\_SteveS\_Wipro](https://www.ruby-forum.com/u/GrayS_SteveS_Wipro)\
**Post date:** [April 28, 2012, 4:01am UTC](https://www.ruby-forum.com/t/nginx-pread-opt-nginx-failed-21-is-a-directory/226279/1 "2012-04-28T04:01:24Z")

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**Author:** ![GrayS\_SteveS\_Wipro](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/ccd318/32.png) [@GrayS\_SteveS\_Wipro](https://www.ruby-forum.com/u/GrayS_SteveS_Wipro)\
**Post date:** [April 30, 2012, 1:39pm UTC](https://www.ruby-forum.com/t/nginx-pread-opt-nginx-failed-21-is-a-directory/226279/2 "2012-04-30T13:39:37Z")

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Hello!

On Fri, Apr 27, 2012 at 09:59:15PM -0400, Gray, Steve, Wipro wrote:

> command with the “-s stop|reload|quit|reopen” options.  
> My configure argument is --prefix=/opt/nginx. Has anyone seen  
> this or know why this is happening? Let me know if you need any  
> more information from me.

The message suggests you have pid (either in config via  
[Core functionality](http://nginx.org/r/pid) or with --pid-path configure argument) set  
to “/opt/nginx”. The fact that nginx starts is actually strange  
though. Could you please provide “nginx -V” output and full  
config used?

Maxim D.