NAME

       spawn-fcgi - Spawns FastCGI processes

SYNOPSIS

       spawn-fcgi [options] [ -- <fcgiapp> [fcgi app arguments]]

       spawn-fcgi -v

       spawn-fcgi -h

DESCRIPTION

       spawn-fcgi is used to spawn remote and local FastCGI processes.

       While it is obviously needed to spawn remote FastCGI backends (the web server can only spawn local ones),
       it is recommended to spawn local backends with spawn-fcgi, too.

       Reasons why you may want to use spawn-fcgi instead of something else:

       *  Privilege separation without needing a suid-binary or running a server as root.

       *  You can restart your web server and the FastCGI applications without restarting the others.

       *  You can run them in different chroot()s.

       *  Running  your  FastCGI applications doesn't depend on the web server you are running, which allows for
          easier testing of other web servers.

OPTIONS

       spawn-fcgi accepts the following options:

       -f <path>
               Filename of the FastCGI application to spawn. This option is deprecated and it  is  recommend  to
               always  specify  the  application  (absolute  path)  and  its  parameters after "--"; the fcgiapp
               parameter is directly used for the exec() call, while for  starting  the  binary  given  with  -f
               /bin/sh is needed (which may not be available in a chroot).

               This option is ignored if fcgiapp is given.

       -d <path>
               Change the current directory before spawning the application.

       -a <address>
               IPv4/IPv6 address to bind to; only used if -p is given too. Defaults to "0.0.0.0" (IPv4).

       -p <port>
               TCP port to bind to; you cannot combine this with the -s option.

       -s <path>
               Path to the Unix domain socket to bind to; you cannot combine this with the -p option.

       -C <children>
               (PHP  only)  Number  of  children to spawn by setting the PHP_FCGI_CHILDREN environment variable.
               Default is not to overwrite the environment variable; php will spawn no children if the  variable
               is not set (same as setting it to 0).

       -F <children>
               Number  of  children  to  fork,  defaults  to 1. This option doesn't work with -n, have a look at
               multiwatch(1) if you want to supervise multiple forks on the same socket.

       -b <backlog>
               backlog to allow on the socket (default 1024). This is usually limited by the kernel  too,  check
               sysctl net.core.somaxconn (default 128) for linux.

               backlog is the queue of connections that the kernel accepts before the userspace application sees
               them.

       -P <path>
               Name of the PID file for spawned processes (ignored in no-fork mode)

       -n      No forking should take place (for daemontools)

       -M <mode>
               Change  file  mode  of  the  Unix  domain  socket  (octal integer); only used if -s is given too.
               Defaults to read+write for user and group (0660) as far as the umask allows it.

       -?, -h  General usage instructions

       -v      Shows version information and exits

       The following options are only available if you invoke spawn-fcgi as root:

       -c <directory>
               Chroot to specified directory; the Unix domain socket is created inside the chroot unless  -S  is
               given.

       -S      Create Unix domain socket before chroot().

       -u      User ID to change to.

       -g      Group ID to change to. Defaults to primary group of the user given for -u.

       -U      Change user of the Unix domain socket, defaults to the value of -u. (only used if -s is given)

       -G      Change  group  of the Unix domain socket, defaults to the primary group of the user given for -U;
               if -U wasn't given, defaults to the value of -g. (only used if -s is given)

SEE ALSO

       svc(8), supervise(8), see http://cr.yp.to/daemontools.html

       multiwatch(1), see http://cgit.stbuehler.de/gitosis/multiwatch/about/

                                                21 November 2012                                   spawn-fcgi(1)