Comment démarrer automatiquement rsyslog ?

Vérifier l'état actuel de rsyslog

$ chkconfig --list rsyslog
rsyslog                   0:off  1:off  2:off  3:off  4:off  5:off  6:off

Démarrer rsyslog à certains niveaux

$ sudo chkconfig --level 35 rsyslog on 

Il produit ces informations :

insserv: warning: script 'plymouth-stop' missing LSB tags and overrides
insserv: Default-Start undefined, assuming empty start runlevel(s) for script `plymouth-stop'
insserv: Default-Stop  undefined, assuming empty stop  runlevel(s) for script `plymouth-stop'
The script you are attempting to invoke has been converted to an Upstart
job, but lsb-header is not supported for Upstart jobs.
insserv: warning: script 'failsafe-x' missing LSB tags and overrides
insserv: Default-Start undefined, assuming empty start runlevel(s) for script `failsafe-x'
insserv: Default-Stop  undefined, assuming empty stop  runlevel(s) for script `failsafe-x'
The script you are attempting to invoke has been converted to an Upstart
job, but lsb-header is not supported for Upstart jobs.
insserv: warning: script 'udevtrigger' missing LSB tags and overrides
insserv: Default-Start undefined, assuming empty start runlevel(s) for script `udevtrigger'

Vérifier à nouveau l'état actuel de rsyslog

$ chkconfig --list rsyslog
rsyslog                   0:off  1:off  2:off  3:off  4:off  5:off  6:off

Je suis novice. Merci de me montrer comment utiliser rsyslog depuis le début.