Book Image

Linux for System Administrators

By : Viorel Rudareanu, Daniil Baturin
Book Image

Linux for System Administrators

By: Viorel Rudareanu, Daniil Baturin

Overview of this book

Linux system administration is an essential aspect of maintaining and managing Linux servers within an organization. The role of a Linux system administrator is pivotal in ensuring the smooth functioning and security of these servers, making it a critical job function for any company that relies on Linux infrastructure. This book is a comprehensive guide designed to help you build a solid foundation in Linux system administration. It takes you from the fundamentals of Linux to more advanced topics, encompassing key areas such as Linux system installation, managing user accounts and filesystems, networking fundamentals, and Linux security techniques. Additionally, the book delves into the automation of applications and infrastructure using Chef, enabling you to streamline and optimize your operations. For both newcomers getting started with Linux and professionals looking to enhance their skills, this book is an invaluable hands-on guide with a structured approach and concise explanations that make it an effective resource for quickly acquiring and reinforcing Linux system administration skills. With the help of this Linux book, you’ll be able to navigate the world of Linux administration confidently to meet the demands of your role.
Table of Contents (21 chapters)
Part 1: Linux Basics
Part 2: Configuring and Modifying Linux Systems
Part 3: Linux as a Part of a Larger System

Sending logs to a centralized rsyslog server

You’ve already taken the first step toward streamlined log handling by configuring syslog on the main-rsyslog server. But how do you know that the main-rsyslog server is receiving the logs? Logs can be sent from a remote client system to a main-rsyslog server by activating and configuring the rsyslog output module (main-rsyslog).

In this example, the client01 machine uses the rsyslog output module, omfwd, to transmit logs to the main-rsyslog server.

To process messages and logs, the omfwd module must be installed (it will be already). It can be used in conjunction with rsyslog templates. Finally, the module uses the rsyslog action object to transmit the data through UDP and TCP to the specified destinations.

Set up the client machine so that it can submit logs to the main-rsyslog server.

Create a new rsyslog configuration (/etc/rsyslog.d/20-forward-logs.conf) in your preferred text editor and enter the settings shown in...