Restart service problem with sudo

[Sil <Spam>]

Hi,
I want to test the event-handler for restarting services on my Debian 
Sarge with Nagios 1.3.
I've change the sudoers permissions to accord nagios user to run 
/etc/init.d/mysql restart :
Host_Alias SERVEUR       = 192.168.X.X
User_Alias NAGIOS         = nagios
Cmnd_Alias SERVICES    = /etc/init.d/mysql restart
NAGIOS SERVEUR = NOPASSWD: SERVICES

I use a script based on the example of the doc :

restart-mysql #########################################
#!/bin/sh
case "$1" in
OK)
     ;;
WARNING)
     ;;
UNKNOWN)
     ;;
CRITICAL)
      case "$2" in
      SOFT)
            case "$3" in
            3)
            echo -n "Restarting service (3rd soft critical state)..."
                       /usr/bin/sudo /etc/init.d/mysql restart
            ;;
            esac
        ;;
        HARD)
        echo -n "Restarting  service..."
              /usr/bin/sudo /etc/init.d/mysql restart
        ;;
    esac
    ;;
esac
exit 0
#################################################

In my checkcommands.cfg
define command{
        command_name    restart-mysql
        command_line    
/usr/lib/nagios/plugins/eventhandlers/restart-mysql $SERVICESTATE$ 
$STATETYPE$ $SERVICEATTEMPT$
        }

But my problem is that mysql never restart
And when I try the script whit the nagios user shell, it works !

An example of my /var/log/auth.log

when I execute :
nagios at serveur$ /usr/lib/nagios/plugins/eventhadlers/restart-mysql 
CRTICAL SOFT 3
Mysql restarts and I see this log :
Mar 26 15:05:34 localhost sudo:   nagios : TTY=pts/1 ; 
PWD=/var/log/nagios ; USER=root ; COMMAND=/etc/init.d/mysql restart

But when nagios works alone :
Mar 26 15:04:40 localhost sudo:   nagios : TTY=unknown ; PWD=/   ; 
USER=root ; COMMAND=/etc/init.d/mysql restart
Nothing append !

I don't understand anything, command line is run but mysql nerver starts !
Thanks for your help
Sil

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