/etc/rc.d/rc

[ogniemi]

Hello,
On AIX 5.2 there is the following script executed in level 2 (/etc/rc.d/rc):

l2:2:wait:/etc/rc.d/rc 2

#############################################################
# file name: rc
# purpose: run user-provided scripts in rc directories
#############################################################

#run level parameter
run_level=${1}

#check if valid run level was requested

case "$run_level"
in
[01] ) echo "Invalid run level choice; levels 0 and 1 are reserved in AIX ";;
[a-zA-Z] ) echo "Please enter a run level from 2 to 9";;
esac

#check if run level directory exists
if [[ -s /etc/rc.d/rc${run_level}.d ]] then

#get a list of the "kill" scripts in this directory
k_list=$(ls /etc/rc.d/rc${run_level}.d | grep "^K" | sort -)

#get a list of the "start" scripts in this directory
s_list=$(ls /etc/rc.d/rc${run_level}.d | grep "^S" | sort -)

#execute "kill" scripts
if [[ -n ${k_list} ]] then
echo "${k_list}" | while read item
do
/etc/rc.d/rc${run_level}.d/${item} stop
done
fi

#execute "start" scripts
if [[ -n ${s_list} ]] then
echo "${s_list}" | while read item
do
/etc/rc.d/rc${run_level}.d/${item} start
done
fi


else
echo "Requested run level directory does not exist"
fi

exit 0




Does it execute stop and start scripts together every system start and stop? I would expect /etc/rc.d/rc2.d/S55app (/etc/rc.d/init.d/app start)being run on system start and /etc/rc.d/rc2.d/K45app (etc/rc.d/initd./app stop) being started on system shutdown.


regards, m.

 

[Ogzilal]

Hi,
This script receives a run level as parameter, say 2

First, this script collects all scripts named K* (KILL) in the run-level directory received as parameter (/etc/rc.d/rc2.d for run level 2) and it calls them with the parameter 'stop'
Then, it collects again all scripts starting with 'S'(START) in the run-level directory and it calls them with the parameter 'start'

When you type in the command /etc/telinit 2 at shell prompt or when the system is rebooted :
- all the K* scripts in /etc/rc.d/rc2.d are executed and
- all the S* scripts are executed too.

 

[ogniemi]

does it mean the a script "app" is executed twice during the starting system and twice during shutting down system?

1st stopping
2nd starting

????

For me it is not OK.

r, m.

 

[Ogzilal]

Hi,
Here is a concrete example:

The posted script is called rc.uagent and located at my box in /etc/rc.d/documentum ( it could be located in any other directory)

#### begin of script ######
#!/bin/ksh
#------------------------------------------------------------
#
# @(#) name : rc.uagent
# @(#) source : /etc/rc.d/documentum
# @(#) objectif : script to start and stop arcserve agent
# @(#) This file is linked with the two files :
# @(#) /etc/rc.d/rc2.d/K20_agentsauvegarde
# @(#) /etc/rc.d/rc2.d/S20_agentsauvegarde
#
#-----------------------------------------------------------
case "$1" in
start )
/usr/uagent/uagent start
;;
stop )
/usr/uagent/uagent stop
;;
* )
echo "Usage: $0 (start | stop)"
exit 1
;;
esac

#### end of script ######

In th directory /etc/rc.d/rc2.d, I have linked two file
K20_agentsauvegarde and
S20_agentsauvegarde
because when the system is at run level 2,I want to stop the agent before restarting It.

If I just want to start it, my /etc/rc.d/rc2.d would contain only S20_agentsauvegarde which is called from rc script with 'start' parameter.

 

[ogniemi]

thx for your reply.

I have the same you wrote. One script and 2 links to it: /etc/rc.d/rc2.d/S45app and /etc/rd.d/rc2.d/K55app

I need the following:

Stop the app when system is leaving the level 2 (for example. system shutdown). (only stop the app).

Start the app when system is entering the level 2. (only start).

So what system does when I shutting down the system?
In my opinion, having default /etc/rc.d/rc in AIX 5.2 it runs "stop" and "start" the app one by one - and should only stop!

thx in adv, m.

 

[sbix]

ogniemi,
it's absolutely normal it's the standard startup way in Unix System V, SCO and some others

 

[Ogzilal]

Hi,
I have used run level 3 to bring my application up
In run level 2, I start oracle listener, Documentum broker and Arcserve agent, a script to stop my application and a script of me that checks if I come from run level 'S', I bring the system to run level 3 with
/etc/telinit 3

When the system boot up, it runs automatically run level 2
and goes up to run level 3 with my script.

When I want to shutdown the system, I first issue /etc/telinit 2 whitch stops the application( and restarts all others but still in run level 2)
after this I issue a classical shutdown