Random Instant 502 Bad Gateway Errors

Michael Shadle mike503 at gmail.com
Sat May 29 21:33:58 MSD 2010


150 children is quite a lot. Sure you need that? :)

On May 29, 2010, at 6:02 AM, "TheCrach" <nginx-forum at nginx.us> wrote:

> Hi,
>
> I'm French and I've some problem with nginx 0.8.38 and PHP-FPM 5.3.0  
> with Suhosin patch :/
> I've got random instant 502 Bad Gateway errors, generaly a refresh  
> make the page works again but it's really anoying.
>
> Nginx Config :
> [code]
> user www;
> worker_processes 1;
> daemon on;
>
> error_log /var/log/nginx/error.log;
> pid /var/run/nginx.pid;
>
> worker_rlimit_nofile 32000;
>
> events {
>    worker_connections  4096;
>    use epoll;
> }
>
> http {
>
>    include       mime.types;
>    default_type  text/plain;
>
>    limit_zone http $binary_remote_addr 1m;
>    limit_zone https $binary_remote_addr 1m;
>
>    client_body_timeout 8;
>    client_header_timeout 5;
>    keepalive_timeout 5;
>    keepalive_requests 10;
>    send_timeout 8;
>
>    client_max_body_size 512k;
>
>    access_log off;
>    error_log off;
>
>    client_header_buffer_size    16k;
>    large_client_header_buffers  16 16k;
>
>    output_buffers   2 32k;
>    postpone_output  1460;
>
>    sendfile         on;
>    tcp_nopush       on;
>    tcp_nodelay      on;
>    reset_timedout_connection on;
>
>    ignore_invalid_headers on;
>    autoindex on;
>    msie_padding on;
>
>    gzip  on;
>    gzip_http_version 1.1;
>    gzip_vary on;
>    gzip_comp_level 6;
>    gzip_proxied any;
>    gzip_types text/plain text/css application/json application/x- 
> javascript text/xml application/xml application/xml+rss text/ 
> javascript;
>    gzip_buffers 16 16k;
>    gzip_disable “MSIE [1-6].(?!.*SV1)”;
>
>    server
>    {
>      listen 80 default rcvbuf=8192 sndbuf=16384 backlog=65536;
>      index  index.html index.htm index.php;
>      root   /home/www/;
>
>      limit_conn http 10;
>
>      access_log off;
>
>     location ~* \.(ico|css|js|gif|jpe?g|png)(\?[0-9]+)?$ {
>      expires 3600;
>      break;
>     }
>
>     location ~ \.php(/|$) {
>         include fastcgi_params;
>     }
>
>     location ~ \.php5(/|$) {
>         include fastcgi_params;
>     }
>
>     location ~ \.php4(/|$) {
>         include fastcgi_params;
>     }
>
>     location /cache/status {
>         stub_status on;
>         access_log off;
>     }
>    }
> [/code]
>
> Fastcgi params :
>
> [code]
> fastcgi_connect_timeout 5;
> fastcgi_send_timeout 8;
> fastcgi_buffer_size 512k;
> fastcgi_buffers 64 64k;
> fastcgi_busy_buffers_size 512k;
> fastcgi_temp_file_write_size 512k;
> fastcgi_ignore_client_abort on;
> fastcgi_intercept_errors on;
> fastcgi_read_timeout 45;
>
> fastcgi_pass   unix:/tmp/php.socket;
> fastcgi_index  index.php;
> fastcgi_param  SCRIPT_FILENAME $document_root$fastcgi_script_name;
> 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;
> fastcgi_param  SERVER_SOFTWARE    RD;
> 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;
> [/code]
>
> PHP-FPM conf :
>
> [code]
> <?xml version="1.0" ?>
> <configuration>
>    <section name="global_options">
>        <value name="pid_file">/var/run/php5-fpm.pid</value>
>        <value name="error_log">/var/log/php-fpm.log</value>
>        <value name="log_level">warn</value>
>        <value name="emergency_restart_threshold">60</value>
>        <value name="emergency_restart_interval">1m</value>
>        <value name="process_control_timeout">4s</value>
>        <value name="daemonize">yes</value>
>    </section>
>
>    <workers>
>        <section name="pool">
>            <value name="name">RD</value>
>            <value name="listen_address">/tmp/php.socket</value>
>            <value name="listen_options">
>                <value name="backlog">-1</value>
>                <value name="owner">www</value>
>                <value name="group">www</value>
>                <value name="mode">0666</value>
>            </value>
>
>            <value name="php_defines">
>            </value>
>
>            <value name="user">www</value>
>            <value name="group">www</value>
>
>            <value name="pm">
>                <value name="style">static</value>
>                <value name="max_children">150</value>
>                <value name="apache_like">
>                    <value name="StartServers">25</value>
>                    <value name="MinSpareServers">5</value>
>                    <value name="MaxSpareServers">35</value>
>                </value>
>            </value>
>
>            <value name="request_terminate_timeout">0s</value>
>            <value name="request_slowlog_timeout">0s</value>
>            <value name="slowlog">/var/log/php-fpm.log.slow</value>
>            <value name="rlimit_files">1024</value>
>            <value name="rlimit_core">0</value>
>            <value name="chroot"></value>
>            <value name="chdir"></value>
>            <value name="catch_workers_output">yes</value>
>            <value name="max_requests">65536</value>
>            <value name="allowed_clients">127.0.0.1</value>
>
>            <value name="environment">
>                <value name="HOSTNAME">$HOSTNAME</value>
>                <value name="PATH">/usr/local/bin:/usr/bin:/bin</value>
>                <value name="TMP">/tmp</value>
>                <value name="TMPDIR">/tmp</value>
>                <value name="TEMP">/tmp</value>
>                <value name="OSTYPE">$OSTYPE</value>
>                <value name="MACHTYPE">$MACHTYPE</value>
>                <value name="MALLOC_CHECK_">2</value>
>            </value>
>        </section>
>    </workers>
> </configuration>
> [/code]
>
> Server config :
>
> [code]
> Intel Corei5 (Lynnfield) 4x 2.66+ GHz 8 Mo L2 - FSB 1333 MHz
> 64 bits
> 8 Go DDR3
> Intel SSD X25-M 2x 80 Go RAID    0/1
> GigaEthernet
> [/code]
>
> If anyone have an idea :)
>
> It's very strange because it's instant and random whereas it would  
> be timedout all the time :/
>
> Thank's in advance.
>
> Posted at Nginx Forum: http://forum.nginx.org/read.php?2,91854,91854#msg-91854
>
>
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> http://nginx.org/mailman/listinfo/nginx



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