Hi, Currently, we use Nginx as a reverse proxy without cache. Last monday we've rolled out a new version of PHP application which has appeared a several 502 errors.
First of all, i've applied the workaround explained in thread http://forum.nginx.org/read.php?2,188352 . The number of 502 have falled down but we can see a several 502 yet, but we haven't any error log now in the nginx. This is Nginx parameters applied: {code} ## Size Limits client_body_buffer_size 128K; client_header_buffer_size 1M; client_max_body_size 1M; large_client_header_buffers 8 8k; ## Timeouts client_body_timeout 600; client_header_timeout 600; expires 24h; keepalive_timeout 60 60; send_timeout 600; ## TCP options tcp_nodelay on; tcp_nopush on; ## Proxy caching options proxy_buffering on; proxy_buffers 16 16k; proxy_buffer_size 32k; fastcgi_buffers 16 16k; fastcgi_buffer_size 32k; proxy_next_upstream error timeout http_500 http_502 http_503 http_504; proxy_connect_timeout 60s; proxy_read_timeout 600s; proxy_send_timeout 600s; {code} This is the trace lines in acces log of Nginx and Apache: Las trazas son estas: NGINX log_format main '$remote_addr - $remote_user [$time_local] "$request" ' '$status $body_bytes_sent "$http_referer" ' '"$http_user_agent" "$http_x_forwarded_for"'; {code} 2.139.8.108 - - [31/Jul/2013:23:19:31 +0200] "GET /es/descuentos-malaga/oferta-pelsandbody-masaje-tailandes-aromaterapia.html?mktc=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA&utm_campaign=AAAAA&utm_content=AAAAAAA&utm_medium=email&utm_source=ExactTarget&email=email...@provider.com&date=AAAAAAA&AL_Hash=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA&utm_referrer= HTTP/1.1" 502 118 "http://es.example.com/descuentos-malaga/oferta-pelsandbody-masaje-tailandes-aromaterapia.html?mktc=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA&utm_campaign=AAAAA&utm_content=AAAAAAA&utm_medium=email&utm_source=ExactTarget&email=email...@provider.com&date=AAAAAAA&AL_Hash=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"; "Mozilla/5.0 (Linux; U; Android 2.3.3; es-es; GT-I9100 Build/GINGERBREAD) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1" "-" {code} LogFormat "\"%{True-Client-IP}i\" %h %t %T \"%r\" %>s %b %{outstream}n/%{instream}n (%{ratio}n%%) \"%{Referer}i\" \"%{Expires}o\" \"%{Cache-Control}o\" \"%{User-Agent}i\" \"%{Host}i\" \"%{X-Forwarded-For}i\" %{mod_php_memory_usage}n %P" itsysprod APACHE {code} "-" 10.253.1.61 [31/Jul/2013:23:19:31 +0200] 0 "GET /es/descuentos-malaga/oferta-pelsandbody-masaje-tailandes-aromaterapia.html?mktc=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA&utm_campaign=AAAAA&utm_content=AAAAAAA&utm_medium=email&utm_source=ExactTarget&email=email...@provider.com&date=AAAAAAA&AL_Hash=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA HTTP/1.0" 200 303 285/475 (60%) "http://es.example.com/descuentos-malaga/oferta-pelsandbody-masaje-tailandes-aromaterapia.html?mktc=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA&utm_campaign=AAAAA&utm_content=AAAAAAA&utm_medium=email&utm_source=ExactTarget&email=email...@provider.com&date=AAAAAAA&AL_Hash=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"; "Thu, 19 Nov 1981 08:52:00 GMT" "no-store, no-cache, must-revalidate, post-check=0, pre-check=0" "Mozilla/5.0 (Linux; U; Android 2.3.3; es-es; GT-I9100 Build/GINGERBREAD) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1" "m.example.com" "2.139.8.108, 10.253.1.60" 786432 30962 {code} Platform description # cat /etc/redhat-release CentOS release 6.3 (Final) # uname -a Linux balance01-prod 2.6.32-279.5.2.el6.x86_64 #1 SMP Fri Aug 24 01:07:11 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux # nginx -v nginx version: nginx/1.2.4 Posted at Nginx Forum: http://forum.nginx.org/read.php?2,241447,241447#msg-241447 _______________________________________________ nginx mailing list nginx@nginx.org http://mailman.nginx.org/mailman/listinfo/nginx
