How to disable NetworkManager on Linux Fedora 11.

   This step by step example show how to disable NetworkManager on Linux Fedora 11 operating system.  The default configuration of Fedora 11 make sure that every time you restart or reboot Fedora 11 machine, the Network Manager automatically start.  The step by step example below show you on how to disable NetworkManager and disable NetworkManager automatically start every times when your Linux Fedora 11 rebooted.

Disable NetworkManager by stop service.

   First we going to stop the NetworkManager service by stop the Network Manager process, but this not disable NetworkManager permanently... NetworkManager still automatically start when you reboot your Fedora machine..

1.  Log in on Linux Fedora 11 system.

2.  Open Fedora 11  X Terminal if you using the Graphical Linux desktop.

3.  To disable Network Manager, you need root user privilages... use the su command as example below to change to root user.

[fedora11@fedora11 root]$ su
Password:            <-- Key in root user password here and hit Enter key.
[root@fedora11 ~]#

4.  Check Network Manager service status by executing service Networkmanager status command as show on example below...

[root@fedora11 ~]# service NetworkManager status

NetworkManager (pid  1443) is running...

[root@fedora11 ~]#

5.  Stop Network Manager service by execute service NetworkManager stop command as show on example below.

[root@fedora11 ~]# service NetworkManager stop

Stopping NetworkManager daemon:                            [  OK  ]

[root@fedora11 ~]#

6.  Verify Network Manager service is stop by using service NetworkManager stop command as shown on example below.

[root@fedora11 ~]# service NetworkManager status

NetworkManager is stopped

[root@fedora11 ~]#

Permanently disable NetworkManager automatic start on runlevel 3, runlevel 4 and runlevel 5

   The procedure above only temporary stop Network Manager, if you restart your Linux machine the NetworkManager service is automatically start.  To permenently disable NetworkManager follow the step by step command example below to disable the Network Manager from automatically start when you start your Linux Fedora machine.  The step by step procedure below going to guide you to permenenly disable NetworkManager service from automatically start.

1.  Check NetworkManager setting, use chkconfig --list NetworkManager command as example below to check NetworkManager setting on every runlevel on Linux Fedora 11 system... The output example show that NetworkManager is automatically start on runlevel 2, runlevel 3, runlevel 4 and runlevel 5, that mean that the NetworkManager automatically start every time we start up the Linux machine. (note... how to check current runlevel).

[root@fedora11 ~]# chkconfig --list NetworkManager

NetworkManager  0:off   1:off   2:on    3:on    4:on    5:on    6:off

[root@fedora11 ~]#

2.  To permanenly disable NetworkManager automatically start, execute the chkconfig --level 2345 NerworkManager off as show on example below.  The chkconfig command on example below change NetworkManager status from on to off state for runlevel 2, runlevel 3, runlevel 4 and runlevel 5, this prevent NetworkManager from automatically start on these runlevel.

[root@fedora11 ~]# chkconfig --level 2345 NetworkManager off

[root@fedora11 ~]#

3.. Verify by executing chkconfig --list NetworkManager command again to make sure that we permanently disable NetworkManager from automatically start.

[root@fedora11 ~]# chkconfig --list NetworkManager

NetworkManager  0:off   1:off   2:off   3:off   4:off   5:off   6:off

[root@fedora11 ~]#

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