Startup script linux

Revision as of 04:50, 5 March 2010

/etc/init.d script for Linux

Instructions

Tested on Debian 5. CHUIDS user to opensim user. Supports: start, stop, restart, status

To implement: Type: cat > /etc/init.d/opensim Paste in script from this page Press: CTRL+D Type: chmod +x /etc/init.d/opensim Script should now be located on server and be executable.

Type: update-rc.d opensim defaults Script should now be in your startup.

Modify header in script to adapt it to your installation folder and user.

NOTE: stop-command currently doesn't work properly (it doesn't do a soft shutdown). It will kill OpenSim first with kill pid, then kill -9 pid. So make sure you have saved your data. :)

Script

#! /bin/sh
### BEGIN INIT INFO
# Provides: OpenSim
# Required-Start: $local_fs $network 
# Required-Stop: $local_fs
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Tedds OpenSim init.d-script
### END INIT INFO
# Put script in /etc/init.d/
# then execute: update-rc.d opensim defaults

set -e

#
# Directories
#
# Location of OpenSim installation
DIR=/home/opensim/OpenSim/bin/
# Different PID dir?
PIDDIR=$DIR

USER=opensim
SERVICES="OpenSim.Grid.UserServer.exe OpenSim.Server.exe OpenSim.exe"

#
# Kill values (in seconds)
#
# How long between each service being started
DELAY_STARTUP=10
# How long between each service is sent shutdown command
DELAY_KILL=10
# After shutdown has been sent to all we do another loop with "kill", then "kill -9". How long between "kill" and "kill -9".
DELAY_FORCEKILL=10

#
# Info on service handled by this script
#
# Name of service
NAME=opensim
# Description of service
DESC="OpenSim Server"

# Binaries
SCREEN=/usr/bin/screen
MONO=/usr/bin/mono

###########################
##### START OF SCRIPT #####
###########################

export PATH="${PATH:+$PATH:}/usr/sbin:/sbin"

<br>

# Load LSB log functions
_lsbFile=""
if [ -e /etc/debian_version ]; then
_lsbFile="/lib/lsb/init-functions"
if [ -f $_lsbFile ]; then
. $_lsbFile
else
echo This script requires LSB init-functions file which doesn't exist: $_lsbFile
exit 1
fi
else
# [ -e /etc/init.d/functions ]&nbsp;; then
_lsbFile="/etc/init.d/functions"
if [ -e $_lsbFile ]; then
. $_lsbFile
else
echo This script requires LSB init-functions file which doesn't exist: $_lsbFile
exit 1
fi
fi

# Lets use fancy output
log_use_fancy_output

# Check that target directory exists
if test&nbsp;! -d "$DIR"; then
log_failure_msg "$NAME" "Target directory \"$DIR\" does not exist. Can not continue."
exit 1
fi

# Create a reverse order for shutdown
SERVICES_REVERSE=""
reverse() { SERVICES_REVERSE="$9 $8 $7 $6 $5 $4 $3 $2 $1"; }
reverse $SERVICES

# Check if a service is running
isrunning() { 
ISRUNNING="0"
# Do we have PID-file?
if [ -f "$PIDDIR/$1.pid" ]; then
# Check if proc is running
pid=`cat "$PIDDIR/$1.pid" 2&gt; /dev/null`
if [ "$pid"&nbsp;!= "" ]; then
if [ -d /proc/$pid ]; then
# Process is running
ISRUNNING="1"
fi
fi
fi
#ISRUNNING="0"
}

#
# Process commands
#
case "$1" in
start)
# Start all services one by one
for server in $SERVICES; do
log_daemon_msg "Starting $NAME" "$server"

isrunning $server
case "$ISRUNNING" in
1) log_progress_msg "Process already started. Please stop first"; log_end_msg 1&nbsp;;;
0) 
# Process is not running
# Start process and sleep...
exefile="/tmp/exe.OpenSim.$server.sh"

# Need to make external file, had big problems with screen params
echo \#\!/bin/bash &gt; $exefile
echo cd $DIR &gt;&gt; $exefile
echo $MONO $server &gt;&gt; $exefile
chmod +x $exefile

cmd_screen="screen -S $server -d -m $exefile"
start-stop-daemon --start -b -x /bin/su -m --pidfile=/tmp/su.$server.pid --chdir "$DIR" -- - $USER "-c $cmd_screen"

# Delay between services that are started
sleep $DELAY_STARTUP

rm $exefile 2&gt; /dev/null

# Make PID-file
ps afxu | grep "mono $server" | grep -iEv "grep|screen" | awk {'print $2'} &gt; "$PIDDIR/$server.pid"

isrunning $server
case "$ISRUNNING" in
1) 
# Process started ok
#log_progress_msg "Success"; 
log_end_msg 0 
&nbsp;;;
0) 
# Process didn't start... remove pid-file
rm "$PIDDIR/$server.pid" 2&gt; /dev/null
#log_progress_msg "Failure"; 
log_end_msg 1 
&nbsp;;;
esac
&nbsp;;;
esac

done
&nbsp;;;

<br>

stop)
_killCount=0

for server in $SERVICES_REVERSE; do
log_daemon_msg "Stopping $NAME" "$server"

isrunning $server
case "$ISRUNNING" in
1) 
_killCount=`expr $_killCount + 1`
log_progress_msg "Sending shutdown command:"; 

# We add some backspaces to the command in case something is on the console already
echo `screen -S $server -X stuff \" 

# Wait for it to shut down...
sleep $DELAY_KILL

isrunning $server
case "$ISRUNNING" in
1) log_progress_msg "is still running."; log_end_msg 0&nbsp;;;
0) log_progress_msg "has been shutdown"; log_end_msg 0&nbsp;;;
esac

&nbsp;;;
0) 
log_progress_msg "is not running"; log_end_msg 0
&nbsp;;;
esac

done

# Check if any procs are still running
for server in $SERVICES; do
isrunning $server
case "$ISRUNNING" in
1) 
log_warning_msg "Stopping $NAME" "$server is still running: Forcing kill"
echo `kill $pid 2&gt; /dev/null`;
sleep $DELAY_FORCEKILL
echo `kill -9 $pid 2&gt; /dev/null`;
sleep 1

# Now check again if it is still running...
isrunning $server
case "$ISRUNNING" in
0) log_progress_msg "Success"; log_end_msg 0&nbsp;;;
1) log_progress_msg "Process is still running... Even after \"kill -9 $pid\". WOW..."; log_end_msg 0&nbsp;;;
esac
&nbsp;;;
0) 
#log_progress_msg ""; 
&nbsp;;;
esac
done

log_begin_msg "$NAME: All done (killed $_killCount procs)"; log_end_msg 0

&nbsp;;;

<br>

<br>

status)
# Count how many processes we need
PROCCOUNT=0
for i in $SERVICES; do
PROCCOUNT=`expr $PROCCOUNT + 1`
done

# Go through server PID files and count how many are running
log_begin_msg "$NAME: Running processed:"
_pidCount=0
for server in $SERVICES; do

isrunning $server
case "$ISRUNNING" in
1) 
# This server is running
_pidCount=`expr $_pidCount + 1`
log_progress_msg "$server"
&nbsp;;;
0) 
&nbsp;;;
esac
done

log_begin_msg " ($_pidCount of $PROCCOUNT processes are running)"; log_end_msg 0

# Check if running proc count matches requires proc count
log_begin_msg "$NAME is"
if [ $_pidCount -eq $PROCCOUNT ]; then
log_progress_msg "running"; log_end_msg 0
exit 0
else
log_progress_msg "NOT running"; log_end_msg 0
exit 1
fi
&nbsp;;;

restart)
$0 stop
$0 start
&nbsp;;;
*)
echo "Usage: /etc/init.d/$NAME {start|stop|restart|status}" &gt;&amp;2
exit 1
&nbsp;;;
esac

exit 0