My environment is Ubuntu 14.04LTS, Nginx 1.4.6 with php5-fpm.
I have a code with RIAK php api ( riak-pb ). When i run it in browser, it works well ( in this case FetchObject ).
I click the browser refresh button more time and my sample code runs well as expected: echoes the FetchedObject. But for examle i wait ( randomly ) few minutes and i want to run my code again, it fails with 504 Gateway time-out.
At this moment no one php code can run at my host.
My NGINX log:
[error] 8491#0: *20 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 127.0.0.1, server: , request: "GET /getContent.php HTTP/1.1", upstream: "fastcgi://unix:/var/run/php5-fpm.sock", host: "localhost"
I realized my php-fpm has some error but no log about it. A sudo service php5-fpm restart command can solve it immediately ( or wait few minutes again ). But i can cause this error again anytime. Sometimes immediately, sometimes after a long trying.
Pls help me.
Update:
I've updated my NGINX to version 1.10.0 but nothing changed.