readfile(): failed to open stream: HTTP request failed! HTTP/1.1 500 Internal Server Error

[Azurel]

Since upgrade from plesk 11.5 to plesk 12 I get more and more error report mails (hundreds) with:

readfile(): failed to open stream: HTTP request failed! HTTP/1.1 500 Internal Server Error

Copy and paste url in browser, all working fine. So why I get all this error mails since upgrade to plesk12?
I'm stupid and forget backup my optimized nginx.conf before upgrade to plesk12. *headshot*

Here a little help for another one to fix this slow nginx setting from plesk 12:

http://tweaked.io/guide/nginx/

I think the main problem is the missing worker_rlimit_nofile. After check and restart my new config with

# nginx -t
# /etc/init.d/nginx restart

the error mails are gone. (in this time^^)

Hope this helps anyone.

 

[abdi]

I'm stupid and forget backup my optimized nginx.conf before upgrade to plesk12. *headshot*

You shouldn't blame your self but plesk for NOT backing up such a configuration file before making any modifications to it (There's already an active discussion on this, so I hope next versions will take this precaution first ..)!