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

Configuring rsyslog for centralized logging

Centralized logging using the central-rsyslog server can be set up after you’ve updated to the most recent version of rsyslog.

The central logging setup is created by turning on the rsyslog UDP input module, imudp, and building the rsyslog template to receive log messages from other servers. The imudp input module allows syslog messages to be broadcast over UDP to be received by the central-rsyslog server.

Enable the options shown in the following screenshot in /etc/rsyslog.conf (the rsyslog configuration file) before saving the file and closing the editor.

The imudp input module needs to be configured to utilize the default UDP port of 514 to work:

Figure 11.3 – imudp module configuration

Figure 11.3 – imudp module configuration

Then, create a new rsyslog template (/etc/rsyslog.d/50-remote-logs.conf) and paste the configuration indicated in Figure 11.4.

The following rsyslog template will allow you to collect logs from other...