Startup script and services


 
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Operating Systems AIX Startup script and services
# 1  
Old 10-27-2009
Startup script and services

Guy's

What the exact steps to mention for example this script /usr/start/start.sh
to be as start up script , I want it to be automatically started when I reboot the server .
ITHelper
# 2  
Old 10-27-2009
insert Line in inittab

use mkitab command
or
go to /etc/inittab and look at the sample lines

you can also put it in /etc/profile...it depends on the content of the file...
# 3  
Old 10-28-2009
... or if it is supposed to starting just programs, you want to link it into /etc/rc.d/rc2.d/S99start ?

Rgds
zxmaus
# 4  
Old 11-10-2009
Inittab is more adviceable :

Inittab syntax:
***********
Identifier:RunLevel:Action:Command


To insert entry:
***********
#mkitab "websphresrvr:2:boot:/opt/WebSphere/AppServer/bin/startServer.sh server1"


to view all /etc/inittab entry
*********************
#lsitab -a

Good luck.
Shiniraz
Malaysia
# 5  
Old 11-10-2009
Shiniraz,

I would say that's a matter of taste or rules - in my opinion no application is supposed to start from inittab - that's for services only. At least in our environment we have to stop and start websphere frequently - so I expect to find a working start/stopscript at a definite location - that is on AIX /etc/rc.d/init.d and linked into rc2.d. Especially if you have separate teams maintaining the server and the applications like in our environment - an entry in inittab would start the application as root. In case of Websphere that would not be acceptable for us.

Kind regards
zxmaus
# 6  
Old 11-11-2009
zxmaus is correct - in fact it is IMHO a rather bad practice to start applications from the inittab, where only the basic system should be started. Applications should be started from S-scripts and stopped from analogous K-scripts in /etc/rc* - this is the very reason the /etc/rc* does exist in fact.

And this is what i am getting at, for reasons of completeness: even if zxmaus didn't mention it, create a corresponding K-script for every S-script you create lest you get troubles using the init/telinit command to switch runlevels.

Entering a new runlevel is done by first running all the K-scripts of the current runlevel, then entering the new runlevel and first thing running all the S-scripts of the new runlevel. If there is a S-script without a corresponding K-script the started process will be left over.

Btw.. the order of the K-/S-scripts being run is alphabetical - this is why they are usually numbered S01-S99/K01-K99 - to enforce a certain order should that be necessary.

I hope this helps.

bakunin
# 7  
Old 11-11-2009
Quote:
Originally Posted by bakunin
And this is what i am getting at, for reasons of completeness: even if zxmaus didn't mention it, create a corresponding K-script for every S-script you create lest you get troubles using the init/telinit command to switch runlevels.
Thank you Bakunin - I thought I had covered this with 'working stop/startscripts Smilie Probably it comes so naturally to me that they're always paired that I did not even think of mentioning it explicitely - and this thread was about starting ? Smilie

Kind regards
zxmaus
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