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Old 12-12-2013, 10:45 PM   #1
tranphat
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chkconfig output meaning

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Hi everyone,
I use chkconfig to enable bootlogd as start-up service
	chkconfig bootlogd on
Afterthat, I recheck with chkconfig --list, the output as below
        bootlogd 0:off 1:off 2:off 4:off 5:off 6:off S:on
Why are the level 2,3,4,5 off? What is the meaning of S:on at the end of bootlogd's output?
I have tried chkconfig with apache2, and the output is below, differently with bootlogd
	chkconfig apache2 on
	chkconfig --list
        apache2 0:off 1:off 2:on 3:on 4:on 5:on 6:off
The level 2,3,4 5 of apache2 are on but it does not have S:on at the end of line.
Could you please explain to me this difference? Any help is appreciated.
 
Old 12-12-2013, 11:13 PM   #2
sunilpopaliya
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Hello,

0,1,2,3,4,5,6 are run levels. If service is on for particular run level means service will start automatically when server will boot on that particular run level. If service is off for particular boot level then it is vice versa.

If you want to start bootlogd service for particular runlevel use the below command:

chkconfig --level <run level in which you want to start service automatically> service-name on

I don't know about Sn. I don't have any option like Sn/off in chkconfig --list command output for my server.

Thanks
======
Sunil
 
Old 12-13-2013, 12:14 AM   #3
tranphat
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Hi Sunil,

I understand that the 0...6 are the run level. The problem here I want to ask that when I issue chkconfig apache2 on, the 2, 3, 4, 5 run levels are turned "on" but issuing chkconfig bootlogd on, the 2,3,4,5 run levels are still "off" and S is turned on "S:on" appears next to 6. If you issue chkconfig bootlogd off, the result is: --> "S:Off"

For example:
acpid                     0:off  1:off  2:on   3:on   4:on   5:on   6:off
apache2                   0:off  1:off  2:on   3:on   4:on   5:on   6:off
atd                       0:off  1:off  2:on   3:on   4:on   5:on   6:off
bootlogd                  0:off  1:off  2:off  3:off  4:off  5:off  6:off  S:on
bootlogs                  0:off  1:off  2:off  3:off  4:off  5:off  6:off
bootmisc.sh               0:off  1:off  2:off  3:off  4:off  5:off  6:off  S:on
checkfs.sh                0:off  1:off  2:off  3:off  4:off  5:off  6:off  S:on
checkroot-bootclean.sh    0:off  1:off  2:off  3:off  4:off  5:off  6:off  S:on
checkroot.sh              0:off  1:off  2:off  3:off  4:off  5:off  6:off  S:on
console-setup             0:off  1:off  2:off  3:off  4:off  5:off  6:off  S:on
cron                      0:off  1:off  2:on   3:on   4:on   5:on   6:off
exim4                     0:off  1:off  2:on   3:on   4:on   5:on   6:off
hostname.sh               0:off  1:off  2:off  3:off  4:off  5:off  6:off  S:on
hwclock.sh                0:off  1:off  2:off  3:off  4:off  5:off  6:off  S:on
kbd                       0:off  1:off  2:off  3:off  4:off  5:off  6:off  S:on
keyboard-setup            0:off  1:off  2:off  3:off  4:off  5:off  6:off  S:on
killprocs                 0:off  1:on   2:off  3:off  4:off  5:off  6:off
kmod                      0:off  1:off  2:off  3:off  4:off  5:off  6:off  S:on


As you can see, besides 6 run levels, there also is "S:on" appearing. I want to know why 2,3,4,5 are not turned "on" when chkconfig bootlogd on and the meaning of S:on/off.
 
Old 12-13-2013, 12:23 AM   #4
astrogeek
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S is system initialization - happens before ALL run-levels.

Since bootlogd is S: on there is no point to have it on in individual run-levels.
Last edited by astrogeek; 12-13-2013 at 12:26 AM.
 
Old 12-13-2013, 12:40 AM   #5
tranphat
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Hi astrogeek,

It means that bootlogd is always started automatically when the system starts up?

I give it a try. When system is up, bootlogd isn't started and I must start it manually.
 
Old 12-13-2013, 12:42 AM   #6
sunilpopaliya
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Hello,

If you want to start bootlogd service for 2,3,4,5 run levels, run below command

chkconfig --level 2,3,4,5 bootlogd on


then check the output of chkconfig --list


Thanks
------
Sunil
 
Old 12-13-2013, 12:58 AM   #7
astrogeek
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Quote:
Originally Posted by tranphat View Post
Hi astrogeek,

It means that bootlogd is always started automatically when the system starts up?

I give it a try. When system is up, bootlogd isn't started and I must start it manually.
It means that bootlogd runs during boot - system initialization. It stopped when the system enters one of the higher run-levels. I suppose you could restart it and have it run for example in run level 4, but why would you - it is for logging boot messages, right?
 
Old 12-13-2013, 01:34 AM   #8
tranphat
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Quote:
Originally Posted by sunilpopaliya View Post
Hello,

If you want to start bootlogd service for 2,3,4,5 run levels, run below command

chkconfig --level 2,3,4,5 bootlogd on


then check the output of chkconfig --list


Thanks
------
Sunil
Hi Sunil,
I did it. But the main question is why in case of apache2, 2,3,4,5 run levels are turned on(chkconfig apache2 not specifies any run level) but bootlogd is not?

Hi astrogeek,

That's right. This tool is used to log booting message. It's located in /var/log/boot. I understand what you would like to say
Last edited by tranphat; 12-13-2013 at 01:35 AM. Reason: more descriptive
 
  


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