start_serverp - Online in the Cloud

PROGRAM:

NAME

start_server - a superdaemon for hot-deploying server programs

SYNOPSIS

start_server [options] -- server-prog server-arg1 server-arg2 ...

# start Plack using Starlet listening at TCP port 8000
start_server --port=8000 -- plackup -s Starlet --max-workers=100 index.psgi

DESCRIPTION

This script is a frontend of Server::Starter. For more information please refer to the
documentation of the module.

OPTIONS

--port=(port|host:port|port=fd|host:port=fd)
TCP port to listen to (if omitted, will not bind to any ports)

If host is not specified, then the program will bind to the default address of IPv4
("0.0.0.0"). Square brackets should be used to specify an IPv6 address (e.g.
--port=[::1]:8080)

If fd is specified, then start_server allocates the socket at the given number.

--path=path
path at where to listen using unix socket (optional)

--dir=path
working directory, start_server do chdir to before exec (optional)

--interval=seconds
minimum interval to respawn the server program (default: 1)

--signal-on-hup=SIGNAL
name of the signal to be sent to the server process when start_server receives a SIGHUP
(default: SIGTERM). If you use this option, be sure to also use "--signal-on-term" below.

--signal-on-term=SIGNAL
name of the signal to be sent to the server process when start_server receives a SIGTERM
(default: SIGTERM)

--pid-file=filename
if set, writes the process id of the start_server process to the file

--status-file=filename
if set, writes the status of the server process(es) to the file

--envdir=ENVDIR
directory that contains environment variables to the server processes. It is intended for
use with "envdir" in "daemontools". This can be overwritten by environment variable
"ENVDIR".

--log-file=file
--log-file="| cmd args..."
if set, redirects STDOUT and STDERR to given file or command

--daemonize
deamonizes the server (by doing fork,setsid,fork). Must be used together with
"--log-file".

--enable-auto-restart
enables automatic restart by time. This can be overwritten by environment variable
"ENABLE_AUTO_RESTART".

--auto-restart-interval=seconds
automatic restart interval (default 360). It is used with "--enable-auto-restart" option.
This can be overwritten by environment variable "AUTO_RESTART_INTERVAL".

--kill-old-delay=seconds
time to suspend to send a signal to the old worker. The default value is 5 when
"--enable-auto-restart" is set, 0 otherwise. This can be overwritten by environment
variable "KILL_OLD_DELAY".

--backlog=size
specifies a listen backlog parameter, whose default is SOMAXCONN (usually 128 on Linux).
While SOMAXCONN is enough for most loads, large backlog is required for heavy loads.

--restart
this is a wrapper command that reads the pid of the start_server process from --pid-file,
sends SIGHUP to the process and waits until the server(s) of the older generation(s) die
by monitoring the contents of the --status-file

--stop
this is a wrapper command that reads the pid of the start_server process from --pid-file,
sends SIGTERM to the process.

--help
prints this help

--version
prints the version number

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