Mastering Ubuntu Server电子书

Title Page

Copyright and Credits

Mastering Ubuntu Server Second Edition

Dedication

Packt Upsell

Why subscribe?

PacktPub.com

Contributors

About the author

About the reviewers

Packt is searching for authors like you

Preface

Who this book is for

What this book covers

To get the most out of this book

Conventions used

Get in touch

Reviews

Deploying Ubuntu Server

Technical requirements

Setting up our lab

Determining your server's role

Deciding between 32- and 64-bit installations

Obtaining Ubuntu Server installation media

Creating a bootable Ubuntu Server flash drive

Planning the partitioning layout

Installing Ubuntu Server

Installing Ubuntu Server on Raspberry Pi 3

Summary

Questions

Further reading

Managing Users

Understanding when to use root

Creating and removing users

Understanding the /etc/passwd and /etc/shadow files

Distributing default configuration files with /etc/skel

Switching users

Managing groups

Managing passwords and password policies

Configuring administrator access with sudo

Setting permissions on files and directories

Summary

Questions

Further reading

Managing Storage Volumes

Understanding the Linux filesystem

Using symbolic and hard links

Viewing disk usage

Adding additional storage volumes

Partitioning and formatting volumes

Mounting and unmounting volumes

Understanding the /etc/fstab file

Managing swap

Utilizing LVM volumes

Understanding RAID

Summary

Questions

Further reading

Connecting to Networks

Setting the hostname

Managing network interfaces

Assigning static IP addresses

Understanding NetworkManager

Understanding Linux name resolution

Getting started with OpenSSH

Getting started with SSH key management

Simplifying SSH connections with a config file

Summary

Questions

Further reading

Managing Software Packages

Understanding Linux package management

Taking advantage of hardware enablement updates

Understanding the differences between Debian and Snap packages

Installing and removing software

Searching for packages

Managing package repositories

Backing up and restoring Debian packages

Cleaning up orphaned apt packages

Making use of Aptitude

Summary

Questions

Controlling and Monitoring Processes

Showing running processes with the ps command

Managing jobs

Dealing with misbehaving processes

Utilizing htop

Managing system processes

Monitoring memory usage

Scheduling tasks with cron

Understanding load average

Summary

Questions

Further reading

Setting Up Network Services

Planning your IP address scheme

Serving IP addresses with isc-dhcp-server

Setting up DNS with bind

Creating a secondary (slave) DNS server

Setting up an internet gateway

Keeping your clock in sync with NTP

Summary

Questions

Further reading

Sharing and Transferring Files

File server considerations

Sharing files with Windows users via Samba

Setting up NFS shares

Transferring files with rsync

Transferring files with scp

Mounting remote directories with SSHFS

Summary

Questions

Further reading

Managing Databases

Preparations for setting up a database server

Installing MariaDB

Understanding the MariaDB configuration files

Managing MariaDB databases

Setting up a slave database server

Summary

Questions

Serving Web Content

Installing and configuring Apache

Installing additional Apache modules

Securing Apache with SSL

Installing and configuring NGINX

Setting up failover with keepalived

Setting up and configuring Nextcloud

Summary

Questions

Further reading

Learning Advanced Shell Techniques

Understanding the Linux shell

Understanding Bash history

Learning some useful command-line tricks

Redirecting output

Understanding variables

Writing simple scripts

Putting it all together: Writing an rsync backup script

Summary

Questions

Further reading

Virtualization

Setting up a virtual machine server

Creating virtual machines

Bridging the virtual machine network

Simplifying virtual machine creation with cloning

Managing virtual machines via the command line

Summary

Questions

Further reading

Running Containers

What is containerization?

Understanding the differences between Docker and LXD

Installing Docker

Managing Docker containers

Automating Docker image creation with Dockerfiles

Managing LXD containers

Summary

Questions

Further reading

Automating Server Configuration with Ansible

Understanding the need for configuration management

Why Ansible?

Creating a Git repository

Getting started with Ansible

Making your servers do your bidding

Putting it all together – Automating web server deployment

Using Ansible's pull method

Summary

Questions

Further reading

Securing Your Server

Lowering your attack surface

Understanding and responding to CVEs

Installing security updates

Automatically installing patches with the Canonical Livepatch service

Monitoring Ubuntu servers with Canonical's Landscape service

Securing OpenSSH

Installing and configuring Fail2ban

MariaDB best practices for secure database servers

Setting up a firewall

Encrypting and decrypting disks with LUKS

Locking down sudo

Summary

Questions

Further reading

Troubleshooting Ubuntu Servers

Evaluating the problem space

Conducting a root cause analysis

Viewing system logs

Tracing network issues

Troubleshooting resource issues

Diagnosing defective RAM

Summary

Questions

Preventing and Recovering from Disasters

Preventing disasters

Utilizing Git for configuration management

Implementing a backup plan

Replacing failed RAID disks

Utilizing bootable recovery media

Summary

Questions

Further Reading

Using the Alternate Installer

Obtaining the Alternate Installer

Installing via the Alternate Installer

Setting up software RAID

Summary

Assessments

Chapter 1 – Deploying Ubuntu Server

Chapter 2 – Managing Users

Chapter 3 – Managing Storage Volumes

Chapter 4 – Connecting to Networks

Chapter 5 – Managing Software Packages

Chapter 6 – Controlling and Monitoring Processes

Chapter 7 – Setting Up Network Services

Chapter 8 - Accessing and sharing files

Chapter 9 - Sharing and Transferring Files

Chapter 10 – Serving Web Content

Chapter 11 – Learning Advanced Shell Techniques

Chapter 12 – Virtualization

Chapter 13 – Running Containers

Chapter 14 – Automating Server Configuration with Ansible

Chapter 15 – Securing Your Server

Chapter 16 – Troubleshooting Ubuntu Servers

Chapter 17 – Preventing and Recovering from Disasters

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