CentOS 7 doesn’t come with ifconfig tools. It encourages users to use ‘ip’ tool for network administration. Although, it is still possible to use ifconfig with CentOS 7. ifconfig is a part of net-tools package. All you have to do is to install the net-tools package using yum.
How to install ifconfig in CentOS 7
Run the following command to install net-tools package in CentOS 7, this will install ifconfig as well:
# yum install net-tools -y