504 Gateway Time-out during POST

[David]

I think this is what you meant by php.ini's timeout value:

max_execution_time = 40

Prior to moving to nginx and php-fpm I have never experienced this issue BTW.

Below is a copy of my php-fpm.conf

<?xml version="1.0" ?>
<configuration>

        All relative paths in this config are relative to php's install prefix

        <section name="global_options">

                Pid file
                <value name="pid_file">/usr/local/logs/php-fpm.pid</value>

                Error log file
                <value name="error_log">/var/log/php-fpm/php-fpm.log</value>

                Log level
                <value name="log_level">notice</value>

                When this amount of php processes exited with SIGSEGV or SIGBUS ...
                <value name="emergency_restart_threshold">10</value>

                ... in a less than this interval of time, a graceful restart
will be initiated.
                Useful to work around accidental curruptions in accelerator's
shared memory.
                <value name="emergency_restart_interval">1m</value>

                Time limit on waiting child's reaction on signals from master
                <value name="process_control_timeout">5s</value>

                Set to 'no' to debug fpm
                <value name="daemonize">yes</value>

        </section>

        <workers>

                <section name="pool">

                        Name of pool. Used in logs and stats.
                        <value name="name">default</value>

                        Address to accept fastcgi requests on.
                        Valid syntax is 'ip.ad.re.ss:port' or just 'port' or
'/path/to/unix/socket'
                        <value name="listen_address">127.0.0.1:9000</value>

                        <value name="listen_options">

                                Set listen(2) backlog
                                <value name="backlog">-1</value>

                                Set permissions for unix socket, if one used.
                                In Linux read/write permissions must be set in
order to allow connections from web server.
                                Many BSD-derrived systems allow connections
regardless of permissions.
                                <value name="owner"></value>
                                <value name="group"></value>
                                <value name="mode">0666</value>
                        </value>

                        Additional php.ini defines, specific to this pool of
workers.
                        <value name="php_defines">
                <!--            <value name="sendmail_path">/usr/sbin/sendmail
-t -i</value>            -->
                <!--            <value name="display_errors">0</value>         
                                                -->
                        </value>

                        Unix user of processes
                        <value name="user">nginx</value>

                        Unix group of processes
                        <value name="group">nginx</value>

                        Process manager settings
                        <value name="pm">

                                Sets style of controling worker process count.
                                Valid values are 'static' and 'apache-like'
                                <value name="style">static</value>

                                Sets the limit on the number of simultaneous
requests that will be served.
                                Equivalent to Apache MaxClients directive.
                                Equivalent to PHP_FCGI_CHILDREN environment in
original php.fcgi
                                Used with any pm_style.
                                <value name="max_children">100</value>

                                Settings group for 'apache-like' pm style
                                <value name="apache_like">

                                        Sets the number of server processes
created on startup.
                                        Used only when 'apache-like' pm_style is
selected
                                        <value name="StartServers">10</value>

                                        Sets the desired minimum number of idle
server processes.
                                        Used only when 'apache-like' pm_style is
selected
                                        <value name="MinSpareServers">5</value>

                                        Sets the desired maximum number of idle
server processes.
                                        Used only when 'apache-like' pm_style is
selected
                                        <value name="MaxSpareServers">5</value>

                                </value>

                        </value>

                        Time limit on waiting execution of single request
                        Should be used when 'max_execution_time' ini option does
not terminate execution for some reason
                        <value name="request_execution_timeout">60s</value>

                        Set open file desc rlimit
                        <value name="rlimit_files">1024</value>

                        Set max core size rlimit
                        <value name="rlimit_core">0</value>

                        Chroot to this directory at the start
                        <value name="chroot"></value>

                        Chdir to this directory at the start
                        <value name="chdir"></value>

                        Redirect workers' stdout and stderr into main error log.
                        If not set, they will be redirected to /dev/null,
according to FastCGI specs
                        <value name="catch_workers_output">yes</value>

                        How much requests each process should execute before
respawn.
                        Useful to work around memory leaks in 3rd party libraries.
                        For endless request processing please specify 0
                        Equivalent to PHP_FCGI_MAX_REQUESTS
                        <value name="max_requests">500</value>

                        Comma separated list of ipv4 addresses of FastCGI
clients that allowed to connect.
                        Equivalent to FCGI_WEB_SERVER_ADDRS environment in
original php.fcgi (5.2.2+)
                        Makes sense only with AF_INET listening socket.
                        <value name="allowed_clients">127.0.0.1</value>

                        Pass environment variables like LD_LIBRARY_PATH
                        All $VARIABLEs are taken from current environment
                        <value name="environment">
                                <value name="HOSTNAME">$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>