How to disable network manager Red Hat 6 based distributions (RHEL, CentOS, Oracle Linux)

To stop Network Manger ( for example then using pacemaker cluster) execute as root:
# service NetworkManager stop
To prevent Network Manager Service from starting at boot execute as root:
# chkconfig NetworkManager off

Keep in mind that you now need to manually configure your network interfaces.

Provided by:Forthscale systems, cloud experts

How to turn off SELINUX in Red - Hat based distributions including CentOS, Oracle Linux and Fedora?

To check  if SELinux is running execute following command:
# getenforce

To disable it, execute the following command:
# setenforce Permissive

This will put selinux in a passive (allow all) mode and last until the machine is rebooted.
 To permanently disable it, change SELINUX= line in: /etc/sysconfig/selinux.


Provided by:Forthscale systems, cloud experts