1START_SERVER(1)       User Contributed Perl Documentation      START_SERVER(1)
2
3
4

NAME

6       start_server - a superdaemon for hot-deploying server programs
7

SYNOPSIS

9         start_server [options] -- server-prog server-arg1 server-arg2 ...
10
11         # start Plack using Starlet listening at TCP port 8000
12         start_server --port=8000 -- plackup -s Starlet --max-workers=100 index.psgi
13

DESCRIPTION

15       This script is a frontend of Server::Starter.  For more information
16       please refer to the documentation of the module.
17

OPTIONS

19   --port=(port|host:port|port=fd|host:port=fd)
20       TCP port to listen to (if omitted, will not bind to any ports)
21
22       If host is not specified, then the program will bind to the default
23       address of IPv4 ("0.0.0.0").  Square brackets should be used to specify
24       an IPv6 address (e.g. --port=[::1]:8080)
25
26       If fd is specified, then start_server allocates the socket at the given
27       number.
28
29       The command binds to UDP ports if the port numbers are prefixed by "u"
30       (e.g., --port=u443).
31
32   --path=path
33       path at where to listen using unix socket (optional)
34
35   --dir=path
36       working directory, start_server do chdir to before exec (optional)
37
38   --interval=seconds
39       minimum interval to respawn the server program (default: 1)
40
41   --signal-on-hup=SIGNAL
42       name of the signal to be sent to the server process when start_server
43       receives a SIGHUP (default: SIGTERM). If you use this option, be sure
44       to also use "--signal-on-term" below.
45
46   --signal-on-term=SIGNAL
47       name of the signal to be sent to the server process when start_server
48       receives a SIGTERM (default: SIGTERM)
49
50   --pid-file=filename
51       if set, writes the process id of the start_server process to the file
52
53   --status-file=filename
54       if set, writes the status of the server process(es) to the file
55
56   --envdir=ENVDIR
57       directory that contains environment variables to the server processes
58       and superdaemon.  It is inspired by "envdir" in "daemontools".  This
59       can be overwritten by environment variable "ENVDIR".
60
61   --log-file=file
62   --log-file="| cmd args..."
63       if set, redirects STDOUT and STDERR to given file or command
64
65   --daemonize
66       deamonizes the server (by doing fork,setsid,fork).  Must be used
67       together with "--log-file".
68
69   --enable-auto-restart
70       enables automatic restart by time.  This can be overwritten by
71       environment variable "ENABLE_AUTO_RESTART".
72
73   --auto-restart-interval=seconds
74       automatic restart interval (default 360). It is used with
75       "--enable-auto-restart" option.  This can be overwritten by environment
76       variable "AUTO_RESTART_INTERVAL".
77
78   --kill-old-delay=seconds
79       time to suspend to send a signal to the old worker. The default value
80       is 5 when "--enable-auto-restart" is set, 0 otherwise.  This can be
81       overwritten by environment variable "KILL_OLD_DELAY".
82
83   --backlog=size
84       specifies a listen backlog parameter, whose default is SOMAXCONN
85       (usually 128 on Linux). While SOMAXCONN is enough for most loads, large
86       backlog is required for heavy loads.
87
88   --restart
89       this is a wrapper command that reads the pid of the start_server
90       process from --pid-file, sends SIGHUP to the process and waits until
91       the server(s) of the older generation(s) die by monitoring the contents
92       of the --status-file
93
94   --stop
95       this is a wrapper command that reads the pid of the start_server
96       process from --pid-file, sends SIGTERM to the process.
97
98   --help
99       prints this help
100
101   --version
102       prints the version number
103

AUTHOR

105       Kazuho Oku
106

SEE ALSO

108       Server::Starter
109

LICENSE

111       This library is free software; you can redistribute it and/or modify it
112       under the same terms as Perl itself.
113
114
115
116perl v5.38.0                      2023-07-21                   START_SERVER(1)
Impressum