Add/Remove/Start/Stop services on CentOS

[keith smith]

I think I understand run levels. Why then was FTP started under /etc/xinetd.d/ and to keep it from running I had the remove the startup script from /etc/xinetd.d/ ?

Wouldn't that make any service launched by /etc/xinetd.d/ as standalone?

So if I wanted I could start FTP by associating it with a run level.  What is the difference.  In other words why would it make a difference? 




------------------------

Keith Smith

--- On Thu, 6/24/10, Bryan O'Neal <Bryan.ONeal at TheONealAndAssociates.com> wrote:

From: Bryan O'Neal <Bryan.ONeal at TheONealAndAssociates.com>
Subject: Re: Add/Remove/Start/Stop services on CentOS
To: "Main PLUG discussion list" <plug-discuss at lists.plug.phoenix.az.us>
Date: Thursday, June 24, 2010, 8:01 PM

Run levels indicate how the service should auto start. If you want it to always listen no mater how you boot the machine (into which run level) the you add it to all run levels. If you want to think of it like this lower run levels are like safe mode in windows.


On Thu, Jun 24, 2010 at 7:59 PM, keith smith <klsmith2020 at yahoo.com> wrote:


I thought there was two way to launch a service or process. 1) init.d associated with a run level or 2) s service that is always listening. 


If I am wrong please point that out to me.

Thanks!

------------------------

Keith Smith

--- On Thu, 6/24/10, Bryan O'Neal <Bryan.ONeal at TheONealAndAssociates.com> wrote:


From: Bryan O'Neal <Bryan.ONeal at TheONealAndAssociates.com>
Subject: Re: Add/Remove/Start/Stop services on CentOS
To: "Main PLUG discussion list" <plug-discuss at lists.plug.phoenix.az.us>

Date: Thursday, June 24, 2010, 7:27 PM

I am afraid I don't understand?
Do you mean you have a service script but you want to be able to use the service command?


On Thu, Jun 24, 2010 at 7:16 PM, keith smith <klsmith2020 at yahoo.com> wrote:





If I use chkconfig to register a service then that service is associated with a run level.  What if I do not want the service to be associated with a run level, but to be stand alone?

------------------------



Keith Smith

--- On Thu, 6/24/10, Bryan O'Neal <Bryan.ONeal at TheONealAndAssociates.com> wrote:



From: Bryan O'Neal <Bryan.ONeal at TheONealAndAssociates.com>
Subject: Re: Add/Remove/Start/Stop services on CentOS
To: "Main PLUG discussion list" <plug-discuss at lists.plug.phoenix.az.us>


Date: Thursday, June 24, 2010, 6:53 PM

use chkconfig to register /etc/init.d as services
chkconfig --list
chkconfig --level [run levels] [service] [on/off]
ie. chkconfig --level 345 httpd on





On Thu, Jun 24, 2010 at 6:45 PM, keith smith <klsmith2020 at yahoo.com> wrote:








More questions so I can make sure I understand what I did and why.  Thank you for your help!




All services are standalone processes,
that are started via start up code found in /etc/xinetd.d/



To add a standalone process put it's start up code in /etc/xinetd.d/



To remove a process from running at
start-up or to stop it all together remove it's start-up code from
/etc/xinetd.d/



Then restart xinetd :
/etc/init.d/xinetd restart  (if installed)

Other commands- - - - - - - - - - - - - - - - - - - - - - 


Stop xinetd: /etc/init.d/xinetd stop
(if installed)
Start xinetd /etc/init.d/xinetd start
(if installed)
Verify that xinetd is running :
/etc/init.d/xinetd status (if installed)
See what services are running :
/sbin/service --status-all



To check Apache, which is running as a
service, issue : /sbin/service httpd status



Services are stand alone and run no
matter what run level the system is on?

What if xinetd is not installed?  Such is the case on my Fedora box.

Thanks!

------------------------

Keith Smith


      
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