On June 24, 2015 11:45:38 AM GMT+01:00, "mudgil.gaurav" <[email protected]> wrote: >Hi All, > >We recently migrated from apache to nginx. > >OS - CetnOS 6 >Nginx - 1.62 (4 CPU 8 GB RAM) >PHP-FPM (php 5.4.37) (4 CPU 8 GB RAM) >APC (Code Cache APC 3.1.13 beta) >Memcache (data cache) > >I have upstream of 4 php servers for php-fpm service. > >I am facing two issues: > >1. I am getting 502 status code in access log means nginx generating >502 bad >gateway error > >2. Randomly connections got pile up on nginx up to 2500 and on php-fpm >servers we do not see any load in top only 1-2 process seems to be >running >during that time and without taking any restart after 2-3 minutes it >starts >working normally and connections goes down to normal without taking any >restart. > > >Please check nginx configuration in-line > >user nguser; >worker_processes 4; > >pid /var/run/nginx.pid; >worker_rlimit_nofile 70000; > >events { > worker_connections 1024; > multi_accept on; > use epoll; >} > >http { > ## > # Basic Settings > ## > > sendfile on; > tcp_nopush on; > tcp_nodelay on; > keepalive_requests 1000; > keepalive_timeout 65; > send_timeout 15; > types_hash_max_size 2048; > server_tokens off; > client_max_body_size 50M; > client_body_buffer_size 1m; > client_body_timeout 15; > client_header_timeout 15; > server_names_hash_bucket_size 64; > server_name_in_redirect off; > > include /etc/nginx/mime.types; > default_type application/octet-stream; > > ## > # Logging Settings >## > #access_log on; > > access_log /var/log/nginx/access.log combined; > #error_log /dev/null crit; > error_log /var/log/nginx/error.log error; > > > #gzip on; > gzip on; > gzip_static on; > gzip_disable "msie6"; > gzip_vary on; > gzip_proxied any; > gzip_comp_level 6; > gzip_min_length 512; > gzip_buffers 16 8k; > gzip_http_version 1.1; > gzip_types text/css text/javascript text/xml text/plain >text/x-component > application/javascript application/x-javascript application/json > application/xml application/rss+xml font/truetype >application/x-font-ttf > font/opentype application/vnd.ms-fontobject image/svg+xml; > > open_file_cache max=2000 inactive=20s; > open_file_cache_valid 60s; > open_file_cache_min_uses 5; > open_file_cache_errors off; > > fastcgi_buffers 256 16k; > fastcgi_buffer_size 128k; > fastcgi_busy_buffers_size 256k; > fastcgi_temp_file_write_size 256k; > fastcgi_connect_timeout 300; > fastcgi_send_timeout 300; > fastcgi_read_timeout 300; > fastcgi_intercept_errors on; >reset_timedout_connection on; > > upstream fastcgiservers { > least_conn; > server xxx.xxx.xx.xx:9000; > server xxx.xxx.xx.xx:9000; > server xxx.xxx.xx.xx:9000; > server xxx.xxx.xx.xx:9000; > } > > include /etc/nginx/conf.d/*.conf; > include /etc/nginx/sites-enabled/*; >} > >location ~ \.php$ { > try_files $uri =404; > include fastcgi_params; > fastcgi_pass fastcgiservers; > fastcgi_index index.php; > fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; > } > >---------------------------------------------------------PHP-FPM >Settings >------------------------------------------------------------------ > >pm.max_children = 150 >pm.start_servers = 90 >pm.min_spare_servers = 70 >pm.max_spare_servers = 100 >pm.max_requests = 1500 >
php logs would be useful but I can notice at least that the value for pm.max_requests is too low. I've made the same mistake in the first times I've setup php-fpm servers, IMHO you should defiantly set a value, but such a low values means php respaws a lot in a very short period of time... I would recommend something higher that 10000... Also I've been having better results with ondemand but that might be related to a lot of different things, but you might also give it a try if you like. hope this helps >Any help or suggestion would be greatly appreciated. > >Thanks > >Posted at Nginx Forum: >http://forum.nginx.org/read.php?2,259833,259833#msg-259833 > >_______________________________________________ >nginx mailing list >[email protected] >http://mailman.nginx.org/mailman/listinfo/nginx -- Sent from my Android device with K-9 Mail. Please excuse my brevity. _______________________________________________ nginx mailing list [email protected] http://mailman.nginx.org/mailman/listinfo/nginx
