Linux for System Administrators (LFS301 retired) Training Course

Introduction

• Linux Foundation
• Linux Foundation Training
• Linux Foundation Certifications
• Linux Foundation Digital Badges
• Laboratory Exercises, Solutions, and Resources
• E-Learning Course: LFS201
• Distribution Details
• Labs

Linux Filesystem Tree Layout

• The Unified Filesystem Concept
• Differentiating Data Types
• FHS Linux Standard Directory Tree
• root (/) directory
• /bin
• /boot
• /dev
• /etc
• /home
• /lib and /lib64
• /media
• /mnt
• /opt
• /proc
• /sys
• /root
• /sbin
• /srv
• /tmp
• /usr
• /var
• /run
• Labs

Processes

• Programs vs. Processes
• Process Limits
• Process Creation
• Process States
• Execution Modes
• Daemons
• niceness
• Libraries
• Labs

Signals

• Signals
• Signal Types
• kill
• killall and pkill
• Labs

Package Management Systems

• Software Packaging Fundamentals
• The Rationale for Using Packages
• Package Types
• Available Package Management Systems
• Packaging Tool Levels and Variations
• Package Sources
• Creating Software Packages
• Revision Control Systems
• Available Source Control Systems
• The Linux Kernel and git
• Labs

RPM

• RPM (Red Hat Package Manager)
• Package File Naming
• RPM Database and Helper Tools
• Queries
• Verifying Packages
• Installing and Removing Packages
• Updating, Upgrading, and Freshening RPM Packages
• Upgrading the Linux Kernel
• rpm2cpio
• Labs

dpkg

• DPKG (Debian Package)
• Package File Names and Source
• DPKG Queries
• Installing, Upgrading, and Uninstalling
• Labs

yum

• Package Installers
• yum
• Queries
• Verifying Packages
• Installing, Removing, and Upgrading Packages
• Additional yum Commands
• dnf
• Labs

zypper

• zypper
• Queries
• Installing, Removing, and Upgrading Packages
• Additional zypper Commands
• Labs

APT

• APT
• apt
• Queries
• Installing, Removing, and Upgrading Packages
• Cleaning Up
• Labs

System Monitoring

• System and Network Monitoring
• sar **
• System Log Files
• Labs

Process Monitoring

• Process Monitoring
• ps
• pstree
• top
• Labs

Memory Monitoring and Usage

• Memory Monitoring and Tuning
• /proc/sys/vm
• vmstat
• Out of Memory Killer (OOM)
• Labs

I/O Monitoring and Tuning

• I/O Monitoring
• iostat
• iotop
• ionice **
• Labs

I/O Scheduling **

• I/O Scheduling
• I/O Scheduler Options
• Labs

Linux Filesystems and the VFS

• Filesystem Basics
• Filesystem Concepts
• Virtual Filesystem (VFS)
• Available Filesystems
• Journalling Filesystems
• Special Filesystems
• Labs

Disk Partitioning

• Common Disk Types
• Disk Geometry
• Partitioning
• Partition Tables
• Naming Disk Devices
• SCSI Device Names
• blkid and lsblk
• Sizing Partitions
• Backing Up and Restoring Partition Tables
• Partition Table Editors
• fdisk
• Labs

Filesystem Features: Attributes, Creation, Checking, and Mounting

• Extended Attributes
• Creating and Formatting Filesystems
• Checking and Repairing Filesystems
• Mounting Filesystems
• NFS
• Mounting at Boot and /etc/fstab
• automount
• Labs

Filesystem Features: Swap, Quotas, and Usage

• Swap
• Filesystem Quotas **
• Filesystem Usage
• Disk Usage
• Labs

The Ext2/Ext3/Ext4 Filesystems

• ext4 Features
• ext4 Layout, Superblock, and Block Groups
• dumpe2fs
• tune2fs
• Labs

The XFS and BTRFS Filesystems **

• XFS
• btrfs
• Labs

Encrypting Disks

• Filesystem Encryption
• LUKS
• cryptsetup
• Utilizing Encrypted Partitions
• Mounting at Boot
• Labs

Logical Volume Management (LVM)

• Logical Volume Management (LVM)
• Volumes and Volume Groups
• Working with Logical Volumes
• Resizing Logical Volumes
• LVM Snapshots **
• Labs

RAID **

• RAID
• RAID Levels
• Software RAID Configuration
• Monitoring RAIDs
• RAID Hot Spares
• Labs

Kernel Services and Configuration

• Kernel Overview
• Kernel Configuration
• Kernel Boot Parameters
• sysctl
• Labs

Kernel Modules

• Kernel Modules
• Module Utilities
• modinfo
• Module Configuration
• Labs

Devices and udev

• udev and Device Management
• Device Nodes
• Rules
• Labs

Virtualization Overview

• Introduction to Virtualization
• Hosts and Guests
• Emulation
• Hypervisors
• libvirt
• QEMU
• KVM
• Labs

Containers Overview

• Containers
• Application Virtualization
• Containers vs. Virtual Machines
• Docker
• Docker Commands
• Podman
• Labs

User Account Management

• User Accounts
• User Account Management
• Locked Accounts
• Passwords
• /etc/shadow
• Password Management
• Password Aging
• Restricted Shells and Accounts **
• The root Account
• SSH
• Labs

Group Management

• Groups
• Group Management
• User Private Groups
• Group Membership
• Labs

File Permissions and Ownership

• File Permissions and Ownership
• File Access Rights
• chmod, chown, and chgrp
• umask
• Filesystem ACLs
• Labs

Pluggable Authentication Modules (PAM)

• PAM (Pluggable Authentication Modules)
• Authentication Process
• Configuring PAM
• LDAP Authentication **

Network Addresses

• IP Addresses
• IPv4 Address Types
• IPv6 Address Types
• IP Address Classes
• Netmasks
• Hostnames
• Labs

Network Devices and Configuration

• Network Devices
• ip
• ifconfig
• Predictable Network Interface Device Names
• Network Configuration Files
• Network Manager
• Routing
• DNS and Name Resolution
• Network Diagnostics
• Labs

Firewalls

• Firewalls
• Interfaces
• firewalld
• Zones
• Source Management
• Service and Port Management
• Labs

System Startup and Shutdown

• Understanding the Boot Sequence
• Boot Loaders
• System Configuration Files in /etc
• Shutting Down and Rebooting
• Labs

GRUB

• The Grand Unified Boot Loader (GRUB)
• Interactive Selections with GRUB at Boot
• Installing GRUB
• Customizing GRUB Configuration
• Boot Loader Specification Configuration (BLSCFG)
• Labs

System Init: systemd, SystemV, and Upstart

• The init Process
• Startup Alternatives
• systemd
• systemctl
• SysVinit Startup **
• chkconfig and service **
• Labs

Backup and Recovery Methods

• Backup Basics
• Backup vs. Archive
• Backup Methods and Strategies
• tar
• Compression: gzip, bzip2, xz, and Backups
• dd
• rsync
• cpio **
• dump and restore **
• mt **
• Backup Programs **
• Labs

Linux Security Modules

• Linux Security Modules
• SELinux
• AppArmor
• Labs

Local System Security

• Local System Security
• Creating a Security Policy
• Updates and Security
• Physical Security
• BIOS
• Bootloader
• Filesystem Security
• setuid/setgid bits
• Labs

Basic Troubleshooting

• Troubleshooting Levels
• Troubleshooting Techniques
• Things to Check: Networking
• Things to Check: File Integrity
• Boot Process Failures
• Filesystem Corruption and Recovery
• Virtual Consoles
• Labs

System Rescue

• Rescue Media and Troubleshooting
• Using Rescue/Recovery Media
• System Rescue and Recovery
• Emergency Boot Media
• Using Rescue Media
• Emergency Mode
• Single User Mode
• Labs