Thursday, December 31, 2015

Nginx + PHP5-FPM repeated cut outs 502

I've seen a number of questions here that highlight random 502 (Nginx + PHP-FPM = "Random" 502 Bad Gateway) and similar time outs when using Nginx + PHP-FPM.



Even with all the questions, I'm still unable to find a solution.



Using Ubuntu 10.10 + Nginx + PHP5-FPM + APC and every 1 out of 4 requests ends in a timeout and failure. This isn't a load issue or large traffic, it happens even in dev environment with one person.




I am doing this across 3 1GB machines, each with the same configurations and same problems.



fastcgi_params



fastcgi_param  QUERY_STRING       $query_string;
fastcgi_param REQUEST_METHOD $request_method;
fastcgi_param CONTENT_TYPE $content_type;
fastcgi_param CONTENT_LENGTH $content_length;


fastcgi_param SCRIPT_NAME $fastcgi_script_name;
fastcgi_param REQUEST_URI $request_uri;
fastcgi_param DOCUMENT_URI $document_uri;
fastcgi_param DOCUMENT_ROOT $document_root;
fastcgi_param SERVER_PROTOCOL $server_protocol;

fastcgi_param GATEWAY_INTERFACE CGI/1.1;
fastcgi_param SERVER_SOFTWARE nginx/$nginx_version;

fastcgi_param REMOTE_ADDR $remote_addr;

fastcgi_param REMOTE_PORT $remote_port;
fastcgi_param SERVER_ADDR $server_addr;
fastcgi_param SERVER_PORT $server_port;
fastcgi_param SERVER_NAME $server_name;

fastcgi_param REDIRECT_STATUS 200;


/etc/php5/fpm/main.conf




; FPM Configuration ;

;include=/etc/php5/fpm/*.conf

; Global Options ;

pid = /var/run/php5-fpm.pid

error_log = /var/log/php5-fpm.log


;log_level = notice

;emergency_restart_threshold = 0

;emergency_restart_interval = 0

;process_control_timeout = 0

;daemonize = yes


; Pool Definitions ;

include=/etc/php5/fpm/pool.d/*.conf


/etc/php5/fpm/pool.d/www.conf



[www]
listen = 127.0.0.1:9000


;listen.backlog = -1
;listen.allowed_clients = 127.0.0.1
;listen.owner = www-data
;listen.group = www-data
;listen.mode = 0666

user = www-data
group = www-data

;pm.max_children = 50

pm.max_children = 15
;pm.start_servers = 20
pm.min_spare_servers = 5
;pm.max_spare_servers = 35
pm.max_spare_servers = 10
;pm.max_requests = 500
;pm.status_path = /status

;ping.path = /ping
;ping.response = pong


request_terminate_timeout = 30
;request_slowlog_timeout = 0

;slowlog = /var/log/php-fpm.log.slow

;rlimit_files = 1024
;rlimit_core = 0

;chroot =


chdir = /var/www

;catch_workers_output = yes

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