Advanced Linux System Administration

This course specifically designed for students who have basic Linux Administration knowledge and looking for advance administration skills in Linux. This course will teach you everything you need to know to be an advanced systems administrator.

Course Outline

Linux Virtual Server Cluster

Introduction

Components of an LVS Cluster

Background of the LVS Cluster

Hardware/Network Requirements

Cluster Node Interconnection Prerequisites

Configuring an LVS Cluster

Piranha Configuration Tool

Linux Virtualization

Overview of Linux Virtualization

What is Hypervisor?

Types of Virtualization

KVM + QEMU + Libvirt Architecture

Virtualization Requirements

Packages, Configuration tool & Service Daemon

Practice Lab Session

Squid Proxy Server

Overview of Squid Proxy Server

Types of Proxy Server

Proxy Server Configurations & its packages

How proxy Server works

Practice Lab Session

LDAP (Light Weight Directory Access Protocol)

Overview of LDAP

Conceptual understanding about LDAP

Advantages of LDAP over NIS

LDAP Database Structure

Practice Lab Session

Automating Installation with kickstart

Overview of kickstart Server

Features & configuration of kickstart server

Graphical mode to configure the kickstart config file

Deploying a new virtual system with kickstart

Practice Lab Sessions

Network Teaming

Overview of Network Teaming

Policies of Network Teaming

Creating teaming virtual interface – (how to configure NIC Teaming as Active Backup (Failover)

Managing Network Teaming

Configuring iSCSI Targets & Initiators

About iSCSI

iSCSI fundamentals

iSCSI Components terminology

Practice Lab Sessions

Managing SELinux Security

SELinux Security Concepts

SELinux Context

SELinux Modes

Lab on SELinux Modes

Practical approach to understand SELinux

Lab - Change context temporary

Lab - Change context permanently

Lab - SELinux inheritance and its pitfalls

SELinux Booleans

Lab - SELinux Booleans

Audit logs & Troubleshooting SELinux

Postfix Mail Server Configuration

The structure of the Email System

• Mail User Agent
• Mail Transfer Agent
• Mail Delivery Agent
• SMTP

Configuring an RHEL Email System

Postfix Pre-Installation Steps

Installing Postfix on RHEL 7

Configuring Postfix

Starting Postfix on an RHEL System

Configure a Null Client

Relayhost

Introduction Dovecot, Imap & pop3

Configuring Dovecot

Thunderbird - Mail User Agent (Configure Mail Box)

Last lecture