Book Image

Red Hat Enterprise Linux Server Cookbook

By : Jakub Gaj, Leemans
5 (1)
Book Image

Red Hat Enterprise Linux Server Cookbook

5 (1)
By: Jakub Gaj, Leemans

Overview of this book

Dominating the server market, the Red Hat Enterprise Linux operating system gives you the support you need to modernize your infrastructure and boost your organization’s efficiency. Combining both stability and flexibility, RHEL helps you meet the challenges of today and adapt to the demands of tomorrow. This practical Cookbook guide will help you get to grips with RHEL 7 Server and automating its installation. Designed to provide targeted assistance through hands-on recipe guidance, it will introduce you to everything you need to know about KVM guests and deploying multiple standardized RHEL systems effortlessly. Get practical reference advice that will make complex networks setups look like child’s play, and dive into in-depth coverage of configuring a RHEL system. Also including full recipe coverage of how to set up, configuring, and troubleshoot SELinux, you’ll also discover how secure your operating system, as well as how to monitor it.
Table of Contents (12 chapters)
11
Index

Introduction


This chapter will attempt to explain how to use NetworkManager, which is the default network configuration tool and daemon in RHEL 7. It is a set of tools that makes networking simple and straightforward.

Configuring your network can be hard at times, especially when using the more exotic configuration options in combination with well-known configuration scripts. The NetworkManager allows you to easily configure your network without needing to edit the configuration files manually.

Tip

You can still edit the network configuration files located in /etc/sysconfig/network-scripts using your preferred editor; however, by default, NetworkManager does not notice any changes you make. You'll need to execute the following after editing the files located in the preceding location:

~]# nmcli connection reload

This is not enough to apply the changes immediately. You'll need to bring down and up the connection or reboot the system.

Alternatively, you can edit /etc/NetworkManager/NetworkManager...