LinuxQuestions.org
Visit Jeremy's Blog.
Home Forums Tutorials Articles Register
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Server
User Name
Password
Linux - Server This forum is for the discussion of Linux Software used in a server related context.

Notices


Reply
  Search this Thread
Old 08-31-2010, 07:07 AM   #1
Saoshyant
LQ Newbie
 
Registered: Aug 2010
Posts: 3

Rep: Reputation: 0
Creating an initscript that chkconfig identifies


Hi. Hope I picked the right forum.

I'm on a CentOS server and for the past hours I have been trying to unsuccessfully make a script that will start a binary and keep it running if anything goes wrong with it.

This is what I have:

Code:
#!/bin/bash
# counter daemon
# chkconfig: 345 20 80
# desc: counter daemon

# /etc/init.d/counter

case "$1" in
  start)
        echo -e "Starting counter service\n"
        #To run it as root:
        /var/www/vhosts/nottherealname.pt/sh/counter
        ;;
  stop)
        echo -e "Stopping counter\n"
        #To run it as root:
        #/path/to/command/to/stop/counter
        #Or to run it as some other user:
        #/bin/su - username -c /path/to/command/to/stop/counter
        #echo "."
        kill `ps -ef | grep 'java -cp' | grep -v grep | awk '{ print $2 }'`
        ;;

  *)
        echo "Usage: /sbin/service counter {start|stop}"
        exit 1
esac

exit 0
If I try, this will ensue:

# chkconfig --add counter
service counter does not support chkconfig

Does anyone know how I can make the script start my application?
 
Old 08-31-2010, 07:31 AM   #2
druuna
LQ Veteran
 
Registered: Sep 2003
Posts: 10,532
Blog Entries: 7

Rep: Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405
Hi,

Script looks OK to me (looking at the format, not the actual start/stop commands).

One thing you do not mention: Did you give the script the correct permission? (chmod 755 /etc/init.d/counter)

Also, what output does file /etc/init.d/counter generate?

Hope this helps.
 
Old 08-31-2010, 07:35 AM   #3
Saoshyant
LQ Newbie
 
Registered: Aug 2010
Posts: 3

Original Poster
Rep: Reputation: 0
Yes, I used CHMOD correctly.

The output is:
Code:
# /etc/init.d/counter
Usage: /sbin/service counter {start|stop}

# file /etc/init.d/counter
/etc/init.d/counter: Bourne-Again shell script text executable

# /etc/init.d/counter start
Starting counter service
And starting it manually this way works just fine.

I just wanted to know what am I missing that chkconfig needs.

Last edited by Saoshyant; 08-31-2010 at 07:40 AM.
 
Old 08-31-2010, 07:51 AM   #4
quanta
Member
 
Registered: Aug 2007
Location: Vietnam
Distribution: RedHat based, Debian based, Slackware, Gentoo
Posts: 724

Rep: Reputation: 101Reputation: 101
Change this:
Code:
# desc: counter daemon
to:
Code:
# description: counter daemon
and add a line (not sure if this is necessary)
Code:
# processname: counter
 
Old 08-31-2010, 07:54 AM   #5
druuna
LQ Veteran
 
Registered: Sep 2003
Posts: 10,532
Blog Entries: 7

Rep: Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405
Hi,

Maybe the layout does need a little changing. Change this:
Code:
# counter daemon
# chkconfig: 345 20 80
# desc: counter daemon
To this:
Code:
# chkconfig: 345 20 80
# description: counter daemon
# processname: counter
One other thing, although this should not influence chkconfig: 20 80 -> This starts the script very (too?) early during boot and stops it late. Wouldn't 80 20 be better?

Hope this helps.
 
Old 08-31-2010, 07:56 AM   #6
rgdacosta
Member
 
Registered: Jun 2007
Location: South Africa
Distribution: Linux Mint,Fedora, openSUSE, RHEL, SLES, Scientific Linux
Posts: 71

Rep: Reputation: 25
Your script works fine on a SuSE system.

I was able to activate it via run levels 3 and 5 but I must add that I got some warning messages:


Code:
thanatos:~ # chkconfig counter 35
insserv: warning: script 'counter' missing LSB tags and overrides
insserv: Default-Start undefined, assuming default start runlevel(s) for script `counter'
thanatos:~ # chkconfig -l counter
counter                   0:off  1:off  2:off  3:on   4:off  5:on   6:off
Have a look at this suggested template for use:
Code:
#!/bin/sh
#
#     Template SUSE system startup script for example service/daemon FOO
#     Copyright (C) 1995--2005  Kurt Garloff, SUSE / Novell Inc.
#          
#     This library is free software; you can redistribute it and/or modify it
#     under the terms of the GNU Lesser General Public License as published by
#     the Free Software Foundation; either version 2.1 of the License, or (at
#     your option) any later version.
#			      
#     This library is distributed in the hope that it will be useful, but
#     WITHOUT ANY WARRANTY; without even the implied warranty of
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
#     Lesser General Public License for more details.
#      
#     You should have received a copy of the GNU Lesser General Public
#     License along with this library; if not, write to the Free Software
#     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307,
#     USA.
#
# /etc/init.d/FOO
#   and its symbolic link
# /(usr/)sbin/rcFOO
#
# Template system startup script for some example service/daemon FOO
#
# LSB compatible service control script; see http://www.linuxbase.org/spec/
# 
# Note: This template uses functions rc_XXX defined in /etc/rc.status on
# UnitedLinux/SUSE/Novell based Linux distributions. If you want to base your
# script on this template and ensure that it works on non UL based LSB 
# compliant Linux distributions, you either have to provide the rc.status
# functions from UL or change the script to work without them.
# See skeleton.compat for a template that works with other distros as well.
#
### BEGIN INIT INFO
# Provides:          FOO
# Required-Start:    $syslog $remote_fs
# Should-Start:      $time ypbind smtp
# Required-Stop:     $syslog $remote_fs
# Should-Stop:       ypbind smtp
# Default-Start:     3 5
# Default-Stop:      0 1 2 6
# Short-Description: FOO XYZ daemon providing ZYX
# Description:       Start FOO to allow XY and provide YZ
#	continued on second line by '#<TAB>'
#	should contain enough info for the runlevel editor
#	to give admin some idea what this service does and
#	what it's needed for ...
#	(The Short-Description should already be a good hint.)
### END INIT INFO
# 
# Any extensions to the keywords given above should be preceeded by 
# X-VendorTag- (X-UnitedLinux- X-SuSE- for us) according to LSB.
# 
# Notes on Required-Start/Should-Start:
# * There are two different issues that are solved by Required-Start
#    and Should-Start
# (a) Hard dependencies: This is used by the runlevel editor to determine
#     which services absolutely need to be started to make the start of
#     this service make sense. Example: nfsserver should have
#     Required-Start: $portmap
#     Also, required services are started before the dependent ones.
#     The runlevel editor will warn about such missing hard dependencies
#     and suggest enabling. During system startup, you may expect an error,
#     if the dependency is not fulfilled.
# (b) Specifying the init script ordering, not real (hard) dependencies.
#     This is needed by insserv to determine which service should be
#     started first (and at a later stage what services can be started
#     in parallel). The tag Should-Start: is used for this.
#     It tells, that if a service is available, it should be started
#     before. If not, never mind.
# * When specifying hard dependencies or ordering requirements, you can 
#   use names of services (contents of their Provides: section)
#   or pseudo names starting with a $. The following ones are available
#   according to LSB (1.1):
#	$local_fs		all local file systems are mounted
#				(most services should need this!)
#	$remote_fs		all remote file systems are mounted
#				(note that /usr may be remote, so
#				 many services should Require this!)
#	$syslog			system logging facility up
#	$network		low level networking (eth card, ...)
#	$named			hostname resolution available
#	$netdaemons		all network daemons are running
#   The $netdaemons pseudo service has been removed in LSB 1.2.
#   For now, we still offer it for backward compatibility.
#   These are new (LSB 1.2):
#	$time			the system time has been set correctly	
#	$portmap		SunRPC portmapping service available
#   UnitedLinux extensions:
#	$ALL			indicates that a script should be inserted
#				at the end
# * The services specified in the stop tags 
#   (Required-Stop/Should-Stop)
#   specify which services need to be still running when this service
#   is shut down. Often the entries there are just copies or a subset 
#   from the respective start tag.
# * Should-Start/Stop are now part of LSB as of 2.0,
#   formerly SUSE/Unitedlinux used X-UnitedLinux-Should-Start/-Stop.
#   insserv does support both variants.
# * X-UnitedLinux-Default-Enabled: yes/no is used at installation time
#   (%fillup_and_insserv macro in %post of many RPMs) to specify whether
#   a startup script should default to be enabled after installation.
#   It's not used by insserv.
#
# Note on runlevels:
# 0 - halt/poweroff 			6 - reboot
# 1 - single user			2 - multiuser without network exported
# 3 - multiuser w/ network (text mode)  5 - multiuser w/ network and X11 (xdm)
# 
# Note on script names:
# http://www.linuxbase.org/spec/refspecs/LSB_1.3.0/gLSB/gLSB/scrptnames.html
# A registry has been set up to manage the init script namespace.
# http://www.lanana.org/
# Please use the names already registered or register one or use a
# vendor prefix.


# Check for missing binaries (stale symlinks should not happen)
# Note: Special treatment of stop for LSB conformance
FOO_BIN=/usr/sbin/FOO
test -x $FOO_BIN || { echo "$FOO_BIN not installed"; 
	if [ "$1" = "stop" ]; then exit 0;
	else exit 5; fi; }

# Check for existence of needed config file and read it
FOO_CONFIG=/etc/sysconfig/FOO
test -r $FOO_CONFIG || { echo "$FOO_CONFIG not existing";
	if [ "$1" = "stop" ]; then exit 0;
	else exit 6; fi; }

# Read config	
. $FOO_CONFIG

# Source LSB init functions
# providing start_daemon, killproc, pidofproc, 
# log_success_msg, log_failure_msg and log_warning_msg.
# This is currently not used by UnitedLinux based distributions and
# not needed for init scripts for UnitedLinux only. If it is used,
# the functions from rc.status should not be sourced or used.
#. /lib/lsb/init-functions

# Shell functions sourced from /etc/rc.status:
#      rc_check         check and set local and overall rc status
#      rc_status        check and set local and overall rc status
#      rc_status -v     be verbose in local rc status and clear it afterwards
#      rc_status -v -r  ditto and clear both the local and overall rc status
#      rc_status -s     display "skipped" and exit with status 3
#      rc_status -u     display "unused" and exit with status 3
#      rc_failed        set local and overall rc status to failed
#      rc_failed <num>  set local and overall rc status to <num>
#      rc_reset         clear both the local and overall rc status
#      rc_exit          exit appropriate to overall rc status
#      rc_active        checks whether a service is activated by symlinks
. /etc/rc.status

# Reset status of this service
rc_reset

# Return values acc. to LSB for all commands but status:
# 0	  - success
# 1       - generic or unspecified error
# 2       - invalid or excess argument(s)
# 3       - unimplemented feature (e.g. "reload")
# 4       - user had insufficient privileges
# 5       - program is not installed
# 6       - program is not configured
# 7       - program is not running
# 8--199  - reserved (8--99 LSB, 100--149 distrib, 150--199 appl)
# 
# Note that starting an already running service, stopping
# or restarting a not-running service as well as the restart
# with force-reload (in case signaling is not supported) are
# considered a success.

case "$1" in
    start)
	echo -n "Starting FOO "
	## Start daemon with startproc(8). If this fails
	## the return value is set appropriately by startproc.
	/sbin/startproc $FOO_BIN

	# Remember status and be verbose
	rc_status -v
	;;
    stop)
	echo -n "Shutting down FOO "
	## Stop daemon with killproc(8) and if this fails
	## killproc sets the return value according to LSB.

	/sbin/killproc -TERM $FOO_BIN

	# Remember status and be verbose
	rc_status -v
	;;
    try-restart|condrestart)
	## Do a restart only if the service was active before.
	## Note: try-restart is now part of LSB (as of 1.9).
	## RH has a similar command named condrestart.
	if test "$1" = "condrestart"; then
		echo "${attn} Use try-restart ${done}(LSB)${attn} rather than condrestart ${warn}(RH)${norm}"
	fi
	$0 status
	if test $? = 0; then
		$0 restart
	else
		rc_reset	# Not running is not a failure.
	fi
	# Remember status and be quiet
	rc_status
	;;
    restart)
	## Stop the service and regardless of whether it was
	## running or not, start it again.
	$0 stop
	$0 start

	# Remember status and be quiet
	rc_status
	;;
    force-reload)
	## Signal the daemon to reload its config. Most daemons
	## do this on signal 1 (SIGHUP).
	## If it does not support it, restart the service if it
	## is running.

	echo -n "Reload service FOO "
	## if it supports it:
	/sbin/killproc -HUP $FOO_BIN
	#touch /var/run/FOO.pid
	rc_status -v

	## Otherwise:
	#$0 try-restart
	#rc_status
	;;
    reload)
	## Like force-reload, but if daemon does not support
	## signaling, do nothing (!)

	# If it supports signaling:
	echo -n "Reload service FOO "
	/sbin/killproc -HUP $FOO_BIN
	#touch /var/run/FOO.pid
	rc_status -v
	
	## Otherwise if it does not support reload:
	#rc_failed 3
	#rc_status -v
	;;
    status)
	echo -n "Checking for service FOO "
	## Check status with checkproc(8), if process is running
	## checkproc will return with exit status 0.

	# Return value is slightly different for the status command:
	# 0 - service up and running
	# 1 - service dead, but /var/run/  pid  file exists
	# 2 - service dead, but /var/lock/ lock file exists
	# 3 - service not running (unused)
	# 4 - service status unknown :-(
	# 5--199 reserved (5--99 LSB, 100--149 distro, 150--199 appl.)
	
	# NOTE: checkproc returns LSB compliant status values.
	/sbin/checkproc $FOO_BIN
	# NOTE: rc_status knows that we called this init script with
	# "status" option and adapts its messages accordingly.
	rc_status -v
	;;
    probe)
	## Optional: Probe for the necessity of a reload, print out the
	## argument to this init script which is required for a reload.
	## Note: probe is not (yet) part of LSB (as of 1.9)

	test /etc/FOO/FOO.conf -nt /var/run/FOO.pid && echo reload
	;;
    *)
	echo "Usage: $0 {start|stop|status|try-restart|restart|force-reload|reload|probe}"
	exit 1
	;;
esac
rc_exit
 
Old 08-31-2010, 08:42 AM   #7
Saoshyant
LQ Newbie
 
Registered: Aug 2010
Posts: 3

Original Poster
Rep: Reputation: 0
Quote:
Originally Posted by druuna View Post
Hi,

Maybe the layout does need a little changing. Change (...) To this:
Code:
# chkconfig: 345 20 80
# description: counter daemon
# processname: counter
That's it! It works perfectly now! Thanks, you all.

I also applied your suggestion of changing the boot order to 80 20.
 
Old 08-31-2010, 08:46 AM   #8
druuna
LQ Veteran
 
Registered: Sep 2003
Posts: 10,532
Blog Entries: 7

Rep: Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405Reputation: 2405
You're welcome
 
  


Reply

Tags
centos, chkconfig



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
Why do I get "bash: chkconfig: command not found" when I try to run chkconfig? non-thrash Fedora 10 05-20-2010 12:31 PM
Changing how Firefox identifies itself DownloadTHIS Linux - Software 1 12-10-2005 06:49 PM
Top initscript shahrokhnikou Programming 2 10-25-2005 08:54 AM
Initscript shahrokhnikou Programming 8 10-24-2005 03:23 PM
Initscript shahrokhnikou Linux - General 3 10-24-2005 07:40 AM

LinuxQuestions.org > Forums > Linux Forums > Linux - Server

All times are GMT -5. The time now is 06:49 AM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Open Source Consulting | Domain Registration