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nginx and PHP = 502 Bad Gateway : full detail - 9 years ago

Please help. Here is my setup. OS: ubuntu 14.04.2 LTS nginx : 1.6.2 php: PHP 5.6.7 I can see the web page file ok, but not the php. I check the error log by the following command cat /var/log/nginx/error.log output as: 2015/04/07 11:36:32 7495#0: *1 connect() to unix:/var/run/php5-fpm.sock failed (111: Connection refused) while connecting to upstream, client: 192.168.0.252, serve