[asterisk-dev] init script
John Cahill
john at dmcip.com
Fri May 20 07:19:28 CDT 2011
Hi,
I've re-written the asterisk init script so that it supports the status option and returns LSB compliant values for the various scenarios defined in the LSB standard,( see http://refspecs.freestandards.org/LSB_3.1.1/LSB-Core-generic/LSB-Core-generic/iniscrptact.html). I did this so I could use it in a HA cluster I am currently building.
I've tested it with asterisk 1.6 and 1.8, on Debian Lenny and Squeeze, it appears to work fine.
If it's up to scratch, how do I go about contributing it to the Asterisk project?
Feedback appreciated.
Thanks.
John Cahill
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#! /bin/sh
# $Id: rc.debian.asterisk 287198 2010-09-16 22:12:51Z qwell $
# Fri May 20 2011 John Cahill <email at johncahill.net>
# - Added support for status and ensured return values are LSB compliant so as this script can be used for Linux HA etc.
#
# Mon Jun 04 2007 Iñaki Baz Castillo <ibc at in.ilimit.es>
# - Eliminated SAFE_ASTERISK since it doesn't work as LSB script (it could require a independent "safe_asterisk" init script).s
# - Load and use the standar "/lib/lsb/init-functions".
# - Added "--oknodo" to "start-stop-daemon" for compatibility with LSB:
# http://www.linux-foundation.org/spec/refspecs/LSB_3.0.0/LSB-Core-generic/LSB-Core-generic/iniscrptact.html
#
# Thu Nov 17 2005 Gregory Boehnlein <damin at nacs.net>
# - Reversed behavior of LD_ASSUME_KERNEL=2.4.1
# - Added detailed failure messages
#
# Sun Jul 18 2004 Gregory Boehnlein <damin at nacs.net>
# - Added test for safe_asterisk
# - Changed "stop gracefully" to "stop now"
# - Added support for -U and -G command line options
# - Modified "reload" to call asterisk -rx 'reload'
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
NAME=asterisk
DESC="Asterisk PBX"
# Full path to asterisk binary
DAEMON=/usr/sbin/asterisk
ASTVARRUNDIR=/var/run/asterisk
ASTETCDIR=/etc/asterisk
TRUE=/bin/true
# Uncomment this ONLY if you know what you are doing.
# export LD_ASSUME_KERNEL=2.4.1
# Uncomment the following and set them to the user/groups that you
# want to run Asterisk as. NOTE: this requires substantial work to
# be sure that Asterisk's environment has permission to write the
# files required for its operation, including logs, its comm
# socket, the asterisk database, etc.
#AST_USER=
#AST_GROUP=
# If you DON'T want Asterisk to start up with terminal colors, comment
# this out.
COLOR=yes
### BEGIN INIT INFO
# Provides: asterisk
# Required-Start: $network $syslog $named $local_fs $remote_fs
# Required-Stop: $network $syslog $named $local_fs $remote_fs
# Should-Start: dahdi misdn lcr wanrouter mysql postgresql
# Should-Stop: dahdi misdn lcr wanrouter mysql postgresql
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Asterisk PBX
# Description: the Asterisk Open Source PBX
### END INIT INFO
if ! [ -x $DAEMON ] ; then
echo "ERROR: $DAEMON not found"
echo "result: 0"
exit 0
fi
if ! [ -d $ASTETCDIR ] ; then
echo "ERROR: $ASTETCDIR directory not found"
echo "result: 0"
exit 0
fi
# Use the LSB standard functions for services management
. /lib/lsb/init-functions
case "$1" in
start)
# Check if Asterisk is already running. If it is, then bug out, because
# starting up Asterisk when Asterisk is already running is very bad.
VERSION=`${DAEMON} -rx 'core show version' || ${TRUE}`
if [ -n "$(echo $VERSION | grep "Asterisk")" ]; then
echo "Asterisk is already running. $0 will exit now."
echo "result: 0"
exit 0
fi
log_begin_msg "Starting $DESC: $NAME"
if [ ! -d $ASTVARRUNDIR ]; then
mkdir -p $ASTVARRUNDIR
fi
if [ $AST_USER ] ; then
ASTARGS="-U $AST_USER"
chown $AST_USER $ASTVARRUNDIR
fi
if [ $AST_GROUP ] ; then
ASTARGS="$ASTARGS -G $AST_GROUP"
chgrp $AST_GROUP $ASTVARRUNDIR
fi
if test "x$COLOR" = "xno" ; then
ASTARGS="$ASTARGS -n"
fi
# "start-stop-daemon --oknodo" returns 0 even if Asterisk was already running (as LSB expects):
start-stop-daemon --start --oknodo --exec $DAEMON -- $ASTARGS
log_end_msg $?
;;
stop)
log_begin_msg "Stopping $DESC: $NAME"
# "start-stop-daemon --oknodo" returns 0 even if Asterisk was already stopped (as LSB expects):
start-stop-daemon --stop --oknodo --exec $DAEMON
log_end_msg $?
;;
reload)
echo "Reloading $DESC configuration files."
$DAEMON -rx 'module reload' > /dev/null 2> /dev/null
;;
restart|force-reload)
$0 stop
sleep 3 # It needs some time to really be stopped.
$0 start
# "restart|force-reload" starts Asterisk and returns 0 even if Asterisk was stopped (as LSB expects).
;;
status)
pidof -o %PPID $DAEMON 1>>/dev/null
running_flag=$?
echo "Checking Status $DESC: $NAME"
if [ -f $ASTVARRUNDIR/asterisk.pid ]; then
# pid file does exist: 0
pid_file_exists=0
else
# pid file does not exist: 1
pid_file_exists=1
fi
if [ -e $ASTVARRUNDIR/asterisk.ctl ]; then
# asterisk.ctl exists
asterisk_ctl_exists=0
else
asterisk_ctl_exists=1
fi
VERSION=`${DAEMON} -rx 'core show version' || ${TRUE}`
if [ -n "$(echo $VERSION | grep "Asterisk")" ]; then
echo "Asterisk is already running. $0 will exit now."
echo "result: 0"
program_responsive=0
exit 0
else
program_responsive=1
fi
# STATUS=0
if [ $running_flag -eq 0 ] && [ $pid_file_exists -eq 0 ] && [ $asterisk_ctl_exists -eq 0 ] && [ $program_responsive -eq 0 ]; then
echo "Program is running normally."
echo "result: 0"
program_running_normally=0
exit 0
else
program_running_normally=1
fi
#echo "running_flag: $running_flag,pid_file_exists: $pid_file_exists,asterisk_ctl_exists: $asterisk_ctl_exists,program_responsive: $program_responsive,program_running_normally: $program_running_normally"
if [ $program_running_normally -eq 1 ]; then
# STATUS=1
if [ $running_flag -eq 1 ] && [ $pid_file_exists -eq 0 ]; then
echo "Program is dead but pid file exists."
echo "result: 1"
set -e
exit 1
fi
# STATUS=2 Not implemented - no lock file :-(
# STATUS=3
if [ $running_flag -eq 1 ] && [ $pid_file_exists -eq 1 ] && [ $asterisk_ctl_exists -eq 1 ]; then
echo "Program is not running."
echo "result: 3"
set -e
exit 3
fi
# STATUS=4 Program or service state unknown - used as crude catchall for values other than 0,1,3
echo "Program status is unknown."
echo "result: 4"
set -e
exit 4
fi
;;
*)
echo "Usage: \etc\init.d\$NAME {start|stop|restart|reload|force-reload|status}" >&2
echo "result: 2"
set -e
exit 2
;;
esac
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