[SOLVED] startup script does not start

crocodile9 · 06-08-2015, 10:07 AM

Hello everyone !
I want to run script at start up. So i wrote script following to this article
http://www.tldp.org/HOWTO/HighQualit...OWTO/boot.html
script looks like this :

Note: for testing purpose i grep -c 'still'

Code:

    #!/bin/bash
    #
    # /etc/rc.d/init.d/mysystem
    # Subsystem file for "MySystem" server
    #
    # chkconfig: 2345 95 05
    # description: MySystem server daemon
    #
    # processname: MySystem
    # config: /etc/MySystem/mySystem.conf
    # config: /etc/sysconfig/mySystem
    # pidfile: /var/run/MySystem.pid

    # source function librery
    . /etc/rc.d/init.d/functions

    # pull in sysconfig settings
    [ -f /etc/sysconfig/mySystem ] && . /etc/sysconfig/mySystem

    RETVAL=0
    prog="MySystem"

    start() {
          echo -n $"Starting $prog: "
          if [ "$(last | head -1 | grep -c 'still')" == 1 ]
             then
                  printf "%b\n" "system crashed"
                  $(mv /var/lib/mysql/mysql.sock /var/lib/mysql/mysql.sock.backup)
                  $(rm -f /var/lib/mysql/mysql.sock)
                  if [ $? == 0 ]
                          then
                          printf "%b\n" "mysql.sock deleted successfuly"
                           $(shutdown -r 3)
                  fi
          fi
          #RETVAL=$?
          #[ "$RETVAL" = 0 ] && touch /var/lock/subsys/$prog
          #echo
    }

    stop() {
          echo -n $"Stopping $prog: "
          #
          #
          #
          killproc $porg -TERM
          RETVAL=$?
          [ "$RETVAL" = 0 ] && rm -f /var/lock/subsys/$prog
          echo
    }

    reload() {
          echo -n $"Reloading $prog: "
          killproc $prog -HUP
          RETVAL=$?
          echo
    }

    case "$1" in
       start)
             start
             ;;
       stop)
             stop
             ;;
       restart)
             stop
             start
             ;;
       reload)
             reload
             ;;
       condrestart)
             if [ -f /var/lock/subsys/$prog ] ; then
                   stop
                   # avoid race
                   sleep 3
                   start
             fi
             ;;
       status)
             status $prog
             RETVAL=$?
             ;;
       *)
             echo $"Usage: $0 {start|stop|restart|reload|condrestart|status}"
             RETVAL=1
    esac
    exit $RETVALT

then i created symbolic link in /etc/rc5.d/

Code:

    <<root|red:/etc>># ls -l rc5.d/S95mysystem
    lrwxrwxrwx. 1 root root 18 Jun  8 13:03 rc5.d/S95mysystem -> ../init.d/mysystem

but still not ...
then i added command to /etc/rc.local

Code:

    <<root|red:/etc>># cat rc.local
    #!/bin/bash
    # This script will be executed *after* all the other init scripts.
    # You can put your own initialization stuff in here if you don't
    # want to do the full Sys V style init stuff.

    service mysystem start
    touch /var/lock/subsys/local

but still not ...
if i start service via command line it's works.
what i did wrong ?

rtmistler · 06-08-2015, 12:05 PM

Nothing apparent, the link in rc5.d should've taken care of it.

Is the script owned by root and also executable? How about an ls -l of the script itself?

To run the service out of rc.local, you do not need to start with the "service" command, instead you would just:

Code:

# mysystem start

Either case, the rc5.d should have worked. Are there other scripts run out of rc5 that you know are executing?

crocodile9 · 06-08-2015, 02:06 PM

Code:

<<root|red:~>># ls -l /etc/init.d/mysystem
-rwxr-xr-x. 1 root root 1573 Jun  8 14:54 /etc/init.d/mysystem

for exmple mysqld from /etc/rc5.d/S64mysqld

Code:

<<root|red:~>># service mysqld status
mysqld (pid  2301) is running...

rtmistler · 06-08-2015, 02:17 PM

I was thinking earlier to get fundamental and add like an echo to a log file line right at the top of your script.

Code:

   #!/bin/bash
    #
    # /etc/rc.d/init.d/mysystem
    # Subsystem file for "MySystem" server
    #
    # chkconfig: 2345 95 05
    # description: MySystem server daemon
    #
    # processname: MySystem
    # config: /etc/MySystem/mySystem.conf
    # config: /etc/sysconfig/mySystem
    # pidfile: /var/run/MySystem.pid

    echo "The script is running!" > /home/<your-username>/mysystem.log

As I say, no reason that should not be running.

crocodile9 · 06-08-2015, 02:33 PM

i've raplaced service mysystem start to mysystem start in /etc/rc.local

and here is /var/log/boot.log tail :

Code:

Starting MySystem: Starting libvirtd daemon: 2015-06-08 19:02:33.890+0000: 2506: info : libvirt version: 0.10.2, package: 29.el6 (CentOS BuildSystem <http://bugs.centos.org>, 2013-11-23-13:07:07, c6b8.bsys.dev.centos.org)
2015-06-08 19:02:33.890+0000: 2506: warning : virGetHostname:2294 : getaddrinfo failed for 'red': Name or service not known
                                                           [  OK  ]
Starting up CIM server:                                    [  OK  ]
Starting certmonger:                                       [  OK  ]
/etc/rc5.d/S99local: line 6: mysystem: command not found

rtmistler · 06-08-2015, 02:35 PM

Quote:

Originally Posted by crocodile9

i've raplaced service mysystem start to mysystem start in /etc/rc.local

and here is /var/log/boot.log tail :

Code:

Starting MySystem: Starting libvirtd daemon: 2015-06-08 19:02:33.890+0000: 2506: info : libvirt version: 0.10.2, package: 29.el6 (CentOS BuildSystem <http://bugs.centos.org>, 2013-11-23-13:07:07, c6b8.bsys.dev.centos.org)
2015-06-08 19:02:33.890+0000: 2506: warning : virGetHostname:2294 : getaddrinfo failed for 'red': Name or service not known
                                                           [  OK  ]
Starting up CIM server:                                    [  OK  ]
Starting certmonger:                                       [  OK  ]
/etc/rc5.d/S99local: line 6: mysystem: command not found

Get the path for mysystem and put it in explicitly in the script.

Code:

which mysystem

will show you the path.

crocodile9 · 06-08-2015, 02:49 PM

which didn't found mysystem, i've just put it into /etc/init.d/

Code:

<<root|red:~>># which mysystem
/usr/bin/which: no mysystem in (/usr/lib64/qt-3.3/bin:/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin)

michaelk · 06-08-2015, 03:06 PM

What are you trying to accomplish?

Is there an actual mysystem program other then the startup script you created. Are you just wanting to check the status of mysql and restart the computer if not running? Does mysql frequently crash on boot up?

You could just move that part of the script to rc.local.

crocodile9 · 06-08-2015, 03:20 PM

No, there is no actual mysystem program, this is just script. i want to check if there wasn't normal system down, this is marked as 'crash' in first line last command output , then i try to remove old mysql.sock, which is automatically created at next system boot by mysql. this is case of webserver 24/7 uptime. sometimes occours power loss.
this might be solved in different ways. but i want to know why is not working ?

michaelk · 06-08-2015, 03:41 PM

There isn't a path environment yet so your if statement is failing (if [ "$(last | head -1 | grep -c 'still')" == 1 ]). You can add the path like below to your script.

PATH=/usr/bin

crocodile9 · 06-09-2015, 02:55 AM

Quote:

Originally Posted by michaelk

There isn't a path environment yet so your if statement is failing (if [ "$(last | head -1 | grep -c 'still')" == 1 ]). You can add the path like below to your script.

PATH=/usr/bin

so i changed my script to this:

Code:

[laser@red~]$ cat mysystem2
#!/bin/bash

PATH=/usr/bin:/sbin:/bin:/home/laser

echo "-------------------------------" >> /home/laser/mysystem2.log 
echo "$PATH" >> /home/laser/mysystem2.log
echo "mysystem2 is running" >> /home/laser/mysystem2.log 

if [ "$(last | head -1 | grep -c 'still')" == 1 ]
	then
		echo "last, head, grep succeed" >> /home/laser/mysystem2.log
		$(service mysqld stop)
       		echo "service mysqld status" >> /home/laser/mysystem2.log
		$(mv /var/lib/mysql/mysql.sock /var/lib/mysql/mysql.sock.bakup)
		if [ $? == 0 ]
			then
				echo "mv succeed" >> /home/laser/mysystem2.log
		fi

       		$(rm -f /var/lib/mysql/mysql.sock)
		if [ $? == 0 ]
			then
				echo "rm succeed" >> /home/laser/mysystem2.log
		fi

		$(shutdown -r 2)
fi

permissions are:

Code:

<<root|red:/home/laser>># ll mysystem2
-rwxrwxr-x. 1 root root 819 Jun  9 10:38 mysystem2

rc.local :

Code:

<<root|red:/home/laser>># cat /etc/rc.local 
#!/bin/bash
# This script will be executed *after* all the other init scripts.
# You can put your own initialization stuff in here if you don't
# want to do the full Sys V style init stuff.

/home/laser/mysystem2
touch /var/lock/subsys/local

mysystem2.log :

Code:

<<root|red:/home/laser>># cat mysystem2.log
------------------------------- 
/usr/bin:/sbin:/bin:/home/laser
mysystem2 is running

and extra :
/var/log/boot.log last 3 lines

Code:

Starting up CIM server:                                    [  OK  ]
Starting certmonger:                                       [  OK  ]

rc5.d/ low priority services

Code:

lrwxrwxrwx. 1 root root 20 Jun  8 13:03 S99certmonger -> ../init.d/certmonger
lrwxrwxrwx. 1 root root 24 Jun  8 13:03 S99libvirt-guests -> ../init.d/libvirt-guests
lrwxrwxrwx. 1 root root 11 Nov 26  2014 S99local -> ../rc.local

(why S99local script's startup message is not logging in /var/log/boot.log ?)

even i've added it to System -> Preferences -> Startup Applications

still doesn't runs ...

rtmistler · 06-09-2015, 06:16 AM

Get more fundamental and debug with some coherence.

You say the script runs when you execute it manually and also that you're having difficulties in running it out of rc.local and/or trying to run it as part of the rc5.d init sequence. So debug piece by piece.

Write a very simple script that just echo's a log to a file
Call that script from rc.local and verify that it does or doesn't work
Similarly verify that you can create a symbolic link in rc5.d and cause that test script to run, or if that doesn't work
Presuming that you can successfully invoke a script from rc.local or rc5.d, then what is next is to determine why your particular script does not run correctly when invoked from rc.local
1. Incorporate added debug to show that you've entered your script
2. Add debug to determine the result codes for when you run specific commands and also output that information to a log file
3. Determine the environment circumstances for when you run the script manually to assist you in why the script works manually but not via rc.local
4. When running manually, add a "set -xv" line to the top of your script, but below the #!/bin/bash line. This will enable debug and show you verbose output as to what happens when you run locally, and this may give you an idea where the path for things are, or what defined variables are of consequence when running the script
See the My Bash Blog link in my signature for added tips on BASH scripting

crocodile9 · 06-09-2015, 08:58 AM

mistake was at the very top in script -> Note: for testing purpose i grep -c 'still'
that has been flowing to down.
i amended the first line :

Code:

#!/bin/bash -xv

and this showed up that evaluation of expression

Code:

[ "$(last | head -1 | grep -c 'still')" == 1 ]

was false, because until logged in system, there is no line in last command output containing - still,
very top line is

Code:

reboot   system boot  2.6.32-431.el6.x Tue Jun  9 15:17 - 15:38  (00:21)

Code:

last | head -1 | grep -c 'still')"
last | head -1 | grep -c 'still')
last | head -1 | grep -c 'still'
++ grep -c still
++ last
++ head -1
+ '[' 0 == 1 ']'

So it's solved !
from /etc/init.d/mysystem works also.

i solved this by myself, but thanks anyway.