wiki:JuergeN/Documentation

Version 10 (modified by JuergeN, 9 years ago) (diff)

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WARNING! This is work in progress and not working yet. (JuergeN 2011-08-26)

Installing DeepaMehta 4 on Ubuntu 10.04 LTS

Download DeepaMehta

Download the latest stable version of DeepaMehta from GitHub?:

wget https://github.com/downloads/jri/deepamehta/deepamehta-4.XXX.YYY.zip

Unzip zip archive

unzip deepamehta-4.XXX.YYY.zip

Create an unprivileged user

As we do not want to run DeepaMehta as root we need to create an unprivileged user:

adduser --system --home /opt/deepamehta --group --disabled-password --disabled-login --gecos DeepaMehta deepamehta

Copy files

Copy the DeepaMehta files to /opt/deepamehta:

cp -a deepamehta-4.XXX.YYY/* /opt/deepamehta
chown -R deepamehta:deepamehta /opt/deepamehta

Create start stop script

Create a scipt named deepamehta in /etc/init.d:

#! /bin/sh
### BEGIN INIT INFO
# Provides:          deepamehta
# Required-Start:    $remote_fs $syslog
# Required-Stop:     $remote_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: DeepaMehta initscript
# Description:       This file should be used to start and stop DeepaMehta. 
#                    To be placed in /etc/init.d.
# Author:            Juergen Neumann <j.neumann{at}junes{dot}eu>
#
### END INIT INFO

# Do NOT "set -e"

# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="DeepaMehta"
NAME=deepamehta
DAEMON=/opt/deepamehta/deepamehta-linux.sh
EXTRA_ARGS="-c deepamehta --background --make-pidfile"
DAEMON_ARGS=""
PIDFILE=/var/run/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME

# Exit if the package is not installed
if [ ! -x "$DAEMON" ]; then 
    echo "$DAEMON not found"
    exit 0
fi

# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] && . /etc/default/$NAME

# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh

# Define LSB log_* functions.
# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
. /lib/lsb/init-functions

#
# Function that starts the daemon/service
#
do_start()
{
	# Return
	#   0 if daemon has been started
	#   1 if daemon was already running
	#   2 if daemon could not be started
	start-stop-daemon --start --quiet --pidfile $PIDFILE --startas $DAEMON --test > /dev/null \
		|| return 1
	start-stop-daemon --start $EXTRA_ARGS --quiet --pidfile $PIDFILE --startas $DAEMON $DAEMON_ARGS \
		|| return 2
	# Add code here, if necessary, that waits for the process to be ready
	# to handle requests from services started subsequently which depend
	# on this one.  As a last resort, sleep for some time.
}

#
# Function that stops the daemon/service
#
do_stop()
{
	# Return
	#   0 if daemon has been stopped
	#   1 if daemon was already stopped
	#   2 if daemon could not be stopped
	#   other if a failure occurred
	start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE 
	RETVAL="$?"
	[ "$RETVAL" = 2 ] && return 2
	# Wait for children to finish too if this is a daemon that forks
	# and if the daemon is only ever run from this initscript.
	# If the above conditions are not satisfied then add some other code
	# that waits for the process to drop all resources that could be
	# needed by services started subsequently.  A last resort is to
	# sleep for some time.
	start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --pidfile $PIDFILE
	[ "$?" = 2 ] && return 2
	# Many daemons don't delete their pidfiles when they exit.
	rm -f $PIDFILE
	return "$RETVAL"
}

#
# Function that sends a SIGHUP to the daemon/service
#
do_reload() {
	#
	# If the daemon can reload its configuration without
	# restarting (for example, when it is sent a SIGHUP),
	# then implement that here.
	#
	start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE 
	return 0
}

case "$1" in
  start)
	[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
	do_start
	case "$?" in
		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
	esac
	;;
  stop)
	[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
	do_stop
	case "$?" in
		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
	esac
	;;
  status)
       status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
       ;;
  #reload|force-reload)
	#
	# If do_reload() is not implemented then leave this commented out
	# and leave 'force-reload' as an alias for 'restart'.
	#
	#log_daemon_msg "Reloading $DESC" "$NAME"
	#do_reload
	#log_end_msg $?
	#;;
  restart|force-reload)
	#
	# If the "reload" option is implemented then remove the
	# 'force-reload' alias
	#
	log_daemon_msg "Restarting $DESC" "$NAME"
	do_stop
	case "$?" in
	  0|1)
		do_start
		case "$?" in
			0) log_end_msg 0 ;;
			1) log_end_msg 1 ;; # Old process is still running
			*) log_end_msg 1 ;; # Failed to start
		esac
		;;
	  *)
	  	# Failed to stop
		log_end_msg 1
		;;
	esac
	;;
  *)
	#echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload}" >&2
	echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
	exit 3
	;;
esac

:

#EOF

Update rc.d

Create links for start stop runlevel:

update-rc.d deepamehta defaults