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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