/usr/bin/start_server is in libserver-starter-perl 0.15-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 | #!/usr/bin/perl
eval 'exec /usr/bin/perl -S $0 ${1+"$@"}'
if 0; # not running under some shell
use strict;
use warnings;
use Getopt::Long;
use Pod::Usage;
use Server::Starter qw(start_server restart_server);
my %opts = (
port => [],
path => [],
);
GetOptions(
map {
$_ => do {
my $name = (split '=', $_, 2)[0];
$name =~ s/-/_/g;
$opts{$name} ||= undef;
ref($opts{$name}) ? $opts{$name} : \$opts{$name};
},
} qw(port=s path=s interval=i log-file=s pid-file=s dir=s signal-on-hup=s signal-on-term=s
envdir=s enable-auto-restart=i auto-restart-interval=i kill-old-delay=i
status-file=s restart help version),
) or exit 1;
pod2usage(
-exitval => 0,
-verbose => 1,
) if $opts{help};
if ($opts{version}) {
print "$Server::Starter::VERSION\n";
exit 0;
}
if ($opts{restart}) {
restart_server(%opts);
exit 0;
}
# validate options
die "server program not specified\n"
unless @ARGV;
start_server(
%opts,
exec => \@ARGV,
);
__END__
=head1 NAME
start_server - a superdaemon for hot-deploying server programs
=head1 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
=head1 DESCRIPTION
This script is a frontend of L<Server::Starter>. For more information please refer to the documentation of the module.
=head1 OPTIONS
=head2 --port=(port|host:port)
TCP port to listen to (if omitted, will not bind to any ports)
=head2 --path=path
path at where to listen using unix socket (optional)
=head2 --dir=path
working directory, start_server do chdir to before exec (optional)
=head2 --interval=seconds
minimum interval to respawn the server program (default: 1)
=head2 --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 C<--signal-on-term> below.
=head2 --signal-on-term=SIGNAL
name of the signal to be sent to the server process when start_server receives a SIGTERM (default: SIGTERM)
=head2 --pid-file=filename
if set, writes the process id of the start_server process to the file
=head2 --status-file=filename
if set, writes the status of the server process(es) to the file
=head2 --envdir=ENVDIR
directory that contains environment variables to the server processes.
It is intended for use with C<envdir> in C<daemontools>.
This can be overwritten by environment variable C<ENVDIR>.
=head2 --enable-auto-restart
enables automatic restart by time.
This can be overwritten by environment variable C<ENABLE_AUTO_RESTART>.
=head2 --auto-restart-interval=seconds
automatic restart interval (default 360). It is used with C<--enable-auto-restart> option.
This can be overwritten by environment variable C<AUTO_RESTART_INTERVAL>.
=head2 --kill-old-delay=seconds
time to suspend to send a signal to the old worker. The default value is 5 when C<--enable-auto-restart> is set, 0 otherwise.
This can be overwritten by environment variable C<KILL_OLD_DELAY>.
=head2 --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
=head2 --help
prints this help
=head2 --version
prints the version number
=head1 AUTHOR
Kazuho Oku
=head1 SEE ALSO
L<Server::Starter>
=head1 LICENSE
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
=cut
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