nixCraft

gthian · #1 (**permalink**) 04-27-2007, 02:09 PM

Hi all,

I am unix newbie, but currently my boss required me to write a scripts as below:

* An automated script to bring down our ids, ims, iws & ics
daemons in a correct sequence
* Script to bring up the above, also by the correct sequence

where ids=iplanet directory server,
ims=iplanet messaging server,
iws=iplanet webserver
ics=iplanet calendar server

I know all the command to start and stop the service, but I do not know how to start writing. Please help.

Many many thanks

nixcraft · #2 (**permalink**) 04-27-2007, 04:34 PM

Welcome to our forum!

It is pretty simple. Here is a sample script:

Code:

#!/bin/bash
IMS_START="/path/to/start command"
IWS_START="/path/to/start command"

IMS_STOP="/path/to/stop command"
IWS_STOP="/path/to/stop command"

case "$1" in
    start)
        $IMS_START
        $IWS_START
    ;;
    stop)
        $IMS_STOP
        $IWS_STOP
    ;;
    restart)
    $0 stop
    $0 start
    ;;
    *)
    echo "Usage: $0 {start|stop|restart}"
    exit 1
    ;;
esac

Set executable permission

Code:

chmod +X script

To start all server

Code:

./script start

To Stop all server

Code:

./script stop

gthian · #3 (**permalink**) 04-27-2007, 10:12 PM

Many many thanks.

This is really a great forum.

Quote:

Originally Posted by nixcraft

Welcome to our forum!

It is pretty simple. Here is a sample script:

Code:

#!/bin/bash
IMS_START="/path/to/start command"
IWS_START="/path/to/start command"

IMS_STOP="/path/to/stop command"
IWS_STOP="/path/to/stop command"

case "$1" in
    start)
        $IMS_START
        $IWS_START
    ;;
    stop)
        $IMS_STOP
        $IWS_STOP
    ;;
    restart)
    $0 stop
    $0 start
    ;;
    *)
    echo "Usage: $0 {start|stop|restart}"
    exit 1
    ;;
esac

Set executable permission

Code:

chmod +X script

To start all server

Code:

./script start

To Stop all server

Code:

./script stop

gthian · #4 (**permalink**) 04-27-2007, 10:17 PM

Btw, if i want to put it in crontab and set a time so that the server will start and stop at that particular time, which part to modify?

raj · #5 (**permalink**) 04-28-2007, 04:24 AM

Quote:

Originally Posted by gthian

Btw, if i want to put it in crontab and set a time so that the server will start and stop at that particular time, which part to modify?

no need to modify script, just setup cron job, eg stop work at 10 pm on weekdays:

Code:

0 22 * * 1-5    /path/to/above/script stop

Chkout FAQ section: How do I add jobs to cron under Linux or UNIX oses? | Frequently Asked Questions

for more info

gthian · #6 (**permalink**) 04-28-2007, 03:05 PM

Thank you very much. The scripts are running fine.

gthian · #7 (**permalink**) 04-30-2007, 03:30 PM

Hi,

There is one thing I would like to know. What if I want to start the IWS 10 mins after the IMS started? I need all the service started in the sequence 10 mins and all in one scripts.

Any idea? Please help =)

NVRAM · #8 (**permalink**) 05-31-2007, 12:04 PM

Quote:

Originally Posted by gthian

There is one thing I would like to know. What if I want to start the IWS 10 mins after the IMS started? I need all the service started in the sequence 10 mins and all in one scripts.

You could try to add a second cron job 10 minutes later, or you could simply add sleep 600 between the steps.

Also, a few other thoughts:

Return Codes - you should probably consider checking the return codes of the commands. Do you start the 2nd server if the 1st fails? Check this reference: http://www.tldp.org/LDP/abs/html/tests.html
If a cron script has any output to stdout/stderr, it will be sent in an email to the user (if the MTA is set up properly). One common practice is to send all output to a temporary file: on failure "cat" the file; on success to either echo nothing or a short message (since failure for cron to run the job will not be indicated).
Also, in the USA it is ill advised to schedule important cron jobs between 1AM-3AM, since on days of daylight savings changes your job may run twice or not at all, IIRC.

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start and stop service in crontab.

start and stop service in crontab.

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