Mastering Linux Administration

Cover
Preface
Section 1: Linux Basic Administration
Chapter 1: Installing Linux
	Technical requirements
	The Linux operating system
	Linux distributions
	Choosing the right Linux distribution
		Common Linux distributions
		Linux distributions – a practical guide
	Installing Linux – the basics
		How to install Linux
		Installing Ubuntu
		Installing CentOS
	The Windows Subsystem for Linux (WSL)
	Installing Linux graphical user interfaces
		GNOME
		KDE
	Setting up and using the Linux workstation
		Installing Ubuntu Desktop
		Default software packages
		Additional software packages
		Managing software packages with APT
	Summary
	Questions
Chapter 2: The Linux Filesystem
	Technical requirements
	Introducing the Linux shell
		Bash shell features
		The shell connection
		The command-line prompt
		Shell command types
		Command structure
		Help from the manual
	The Linux filesystem
		Directory structure
	Working with files and directories
		Understanding file paths
		Basic file operations
		Commands for file viewing
		Commands for file properties
		Using text editors to create and edit files
	Summary
	Questions
	Further reading
Chapter 3: Linux Software Management
	Technical requirements
	Linux software package types
		The DEB and RPM package types
		The snap and flatpak package types
	Managing software packages
		Managing DEB packages
		Managing RPM packages
		Using snap and flatpak packages
		Application streams in CentOS 8
	Building a package from source
		The source code file
		Preparing the source code
		Setting up the environment
	Summary
	Questions
	Further reading
Chapter 4: Managing Users and Groups
	Technical requirements
	Managing users
		Understanding sudo
		Creating, modifying, and deleting users
	Managing groups
		Creating, modifying, and deleting groups
	Managing permissions
		File and directory permissions
	Summary
	Questions
Chapter 5: Working with Processes, Daemons, and Signals
	Technical requirements
	Introducing processes
		Understanding process types
		The anatomy of a process
	Working with processes
		The ps command
		The pstree command
		The top command
		The kill and killall commands
		The pgrep and pkill commands
	Working with daemons
		Working with SysV daemons
		Working with systemd daemons
	Exploring interprocess communication
		Shared storage
		Shared memory
		Unnamed pipes
		Named pipes
		Message queues
		Sockets
		Working with signals
	Summary
	Questions
Section 2: Advanced Linux Server Administration
Chapter 6: Working with Disks and Filesystems
	Technical requirements
	Understanding devices in Linux
		Linux abstraction layers
		Device files and naming conventions
	Understanding filesystem types in Linux
		The Ext4 filesystem features
		The XFS filesystem features
		The btrfs filesystem features
	Understanding disks and partitions
		Common disk types used
		Partitioning disks
	Logical Volume Management in Linux
		LVM snapshots
	Summary
Chapter 7: Networking with Linux
	Technical requirements
	Exploring basic networking
		Computer networks
		The OSI model
		The TCP/IP model
		TCP/IP protocols
		IP addresses
		Sockets and ports
		Linux network configuration
	Working with networking services
		DHCP servers
		DNS servers
		Authentication servers
		File sharing
		Printer servers
		File transfer
		Mail servers
		NTP servers
		Remote access
	Understanding network security
		VPNs
		Working with VPNs
		Setting up OpenVPN
	Summary
	Questions
Chapter 8: Configuring Linux Servers
	Technical requirements
	GitHub
	Questions
	Further reading
Chapter 9: Securing Linux
	Technical requirements
	Understanding Linux security
	Introducing SELinux
		Working with SELinux
	Introducing AppArmor
		Working with AppArmor
		Final considerations
	Working with firewalls
		Introducing netfilter
		Working with iptables
		Introducing nftables
		Using firewall managers
	Summary
	Questions
	Further reading
Chapter 10: Disaster Recovery, Diagnostics, and Troubleshooting
	Technical requirements
	Planning for disaster recovery
		A very short introduction to risk management
		Risk calculation
		Designing a disaster recovery plan
	Backing up and restoring the system
		Disk cloning solutions
	Introducing common Linux diagnostic tools for troubleshooting
		Tools for troubleshooting boot issues
		Tools for troubleshooting general system issues
		Tools for troubleshooting network issues
		Tools for troubleshooting hardware issues
	Summary
	Exercises
	Further reading
Section 3: Cloud Administration
Chapter 11: Working with Containers and Virtual Machines
	Technical requirements
	Introduction to virtualization on Linux
		Efficiency in resource usage
		Introduction to hypervisor
		Understanding VMs
		Choosing the hypervisor
	Understanding Linux containers
		Containers versus VMs
		Understanding the underlying container technology
		Understanding Docker
	Working with Docker
		Which Docker version to choose?
		Installing Docker CE
		Using the Docker commands
		Managing Docker containers
		Deploying a containerized application with Docker
	Summary
	Further reading
Chapter 12: Cloud Computing Essentials
	Technical requirements
	Introduction to cloud technologies
		Understanding the need for cloud computing standards
		Knowing the architecture of the cloud
		Knowing the key features of cloud computing
	Short introduction to OpenStack
	Introducing IaaS solutions
		Amazon EC2
		Microsoft Azure Virtual Machines
		Other strong IaaS offerings
	Introducing PaaS solutions
		Amazon Elastic Beanstalk
		Google App Engine
		DigitalOcean App Platform
		Red Hat OpenShift
		Cloud Foundry
		The Heroku platform
	Introducing CaaS solutions
		Introducing the Kubernetes container orchestration solution
		Deploying containers in the cloud
		The rise of micro operating systems
		Introducing microservices
	Introducing DevOps
	Introducing cloud management tools
	Summary
	Further reading
Chapter 13: Deploying to the Cloud with AWS and Azure
	Technical requirements
	Working with AWS EC2
		Creating AWS EC2 instances
		Using AWS EC2 instances
		Working with the AWS CLI
	Working with Microsoft Azure
		Creating a virtual machine
		Managing virtual machines
		Working with the Azure CLI
	Summary
	Questions
	Further reading
Chapter 14: Deploying Applications with Kubernetes
	Technical requirements
	Introducing Kubernetes
		Understanding the Kubernetes architecture
		Introducing the Kubernetes object model
		The anatomy of a Kubernetes cluster
	Installing and configuring Kubernetes
		Installing Kubernetes on desktop
		Installing Kubernetes on virtual machines
		Running Kubernetes in the cloud
	Working with Kubernetes
		Using kubectl
		Deploying applications
	Summary
	Questions
	Further reading
Chapter 15: Automating Workflows with Ansible
	Technical requirements
	Introducing Ansible
		Understanding the Ansible architecture
		Introducing configuration management
	Installing Ansible
		Installing Ansible on Ubuntu
		Installing Ansible on RHEL/CentOS
		Installing Ansible using pip
	Working with Ansible
		Setting up the lab environment
		Configuring Ansible
		Using Ansible ad hoc commands
		Using Ansible playbooks
		Using templates with Jinja2
		Using roles with Ansible Galaxy
	Summary
	Questions
	Further reading
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Index