The Network Manager service automates the network’s settings and disrupts connections to the IP addresses that reside in the ipaliases
module.
Disable the Network Manager service
To disable the Network Manager service, perform the following steps:
1.) Disable Network Manager with the following commands:
Disable NetworkManager on CentOS 6, CloudLinux 6, Red Hat Enterprise Linux 6 (RHEL),
service NetworkManager stop
chkconfig NetworkManager off
Disable NetworkManager on CentOS 7, CloudLinux 7,
systemctl stop NetworkManager.service
systemctl disable NetworkManager.service
2.) Change to the
/etc/sysconfig/network-scripts
directory. Open each configuration file with your preferred text editor and set the following keys’ values:
NM_CONTROLLED=no
ONBOOT=yes
3.) Run the following commands to restart the network:
Restart the network on CentOS 6, CloudLinux 6, RHEL 6
chkconfig network on
service network start
Restart the network on CentOS 7, CloudLinux 7, or RHEL 7
systemctl
enable
network.service
systemctl start network.service
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