Book Image

Hands-On Linux Administration on Azure

By : Frederik Vos
Book Image

Hands-On Linux Administration on Azure

By: Frederik Vos

Overview of this book

Azure’s market share has increased massively and enterprises are adopting it rapidly, while Linux is a widely-used operating system and has proven to be one of the most popular workloads on Azure. It has thus become crucial for Linux administrators and Microsoft professionals to be well versed with managing Linux workloads in an Azure environment. With this guide, system administrators will be able to deploy, automate, and orchestrate containers in Linux on Azure. The book follows a hands-on approach to help you understand DevOps, monitor Linux workloads on Azure and perform advanced system administration. Complete with systematic explanations of concepts, examples and self-assessment questions, the chapters will give you useful insights into Linux and Azure. You’ll explore some of Linux’s advanced features for managing multiple workloads and learn to deploy virtual machines (VMs) in Azure. Dedicated sections will also guide you with managing and extending Azure VMs’ capabilities and understanding automation and orchestration with Ansible and PowerShell DSC. In later chapters, you’ll cover useful Linux troubleshooting and monitoring techniques that will enable you to maintain your workload on Azure. By the end of this book, you’ll be able to make the most out of Azure’s services to efficiently deploy and manage your Linux workloads.

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Table of Contents (14 chapters)
Preface
Preface
Who this book is for
What this book covers
To get the most out of this book
Get in touch
Free Chapter
1
Exploring the Azure Cloud
Exploring the Azure Cloud
Fundamentals of cloud computing
Understanding the Azure Cloud
Summary
Questions
Further reading
2
Getting Started with the Azure Cloud
Getting Started with the Azure Cloud
Technical requirements
Getting access to Azure
Linux and Azure
Deploying a Linux virtual machine
Connecting to Linux
Summary
Questions
Further reading
3
Basic Linux Administration
Basic Linux Administration
The Linux shell
Getting help
Working with text files
Finding your way in the filesystem
Process management
Discretionary Access Control
Summary
Questions
Further reading
4
Managing Azure
Managing Azure
Technical requirements
Storage services
Networking
Components for your virtual machine
Summary
Questions
Further reading
5
Advanced Linux Administration
Advanced Linux Administration
Technical requirements
Software management
Networking
Storage
Systemd
Summary
Questions
Further reading
6
Managing Linux Security and Identities
Managing Linux Security and Identities
Linux security tips
Technical requirements
Linux firewall
Linux Security Modules
Systemd security
Azure Active Directory Domain Service
Summary
Questions
Further reading
7
Deploying Your Virtual Machines
Deploying Your Virtual Machines
Deployment scenarios
Automated deployment options
Initial configuration
Vagrant and Packer
Custom images and VHDs
Summary
Questions
Further reading
8
Exploring Continuous Configuration Automation
Exploring Continuous Configuration Automation
Technical requirements
Ansible
SaltStack
PowerShell desired state configuration
Other solutions
Summary
Questions
Further reading
9
Container Virtualization in Azure
Container Virtualization in Azure
History of containers
Systemd-nspawn
Rkt
Docker
Containers and storage
Summary
Questions
Further reading
10
Working with Azure Kubernetes Service
Working with Azure Kubernetes Service
Technical requirements
Starting to use AKS
Working with Helm
Working with Draft
Managing Kubernetes
Persistent storage
Summary
Questions
Further reading
11
Troubleshooting and Monitoring Your Workloads
Troubleshooting and Monitoring Your Workloads
Technical requirements
Accessing your system
Logging in Linux
Microsoft Log Analytics
Performance monitoring
Summary
Questions
Further reading
12
Assessments
Assessments
Chapter 1: Exploring the Azure Cloud
Chapter 2: Getting Started with the Azure Cloud
Chapter 3: Basic Linux Administration
Chapter 4: Managing Azure
Chapter 5: Advanced Linux Administration
Chapter 6: Managing Linux Security and Identities
Chapter 7: Deploying Your Virtual Machines
Chapter 8: Exploring Continuous Configuration Automation
Chapter 9: Container Virtualization in Azure
Chapter 10: Working with the Azure Kubernetes Service
Chapter 11: Troubleshooting and Monitoring Your Workloads
13
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Questions

For this chapter, let's skip the normal questions. Fire up some virtual machines and choose the orchestration platform of your choice. Configure the network security groups to allow HTTP traffic.

Try to configure the following resources with Ansible, SaltStack, or PowerShell DSC:

  1. Create a user and make it a member of the group wheel (RH-based distributions) or sudo (Ubuntu).
  2. Install an Apache web server, serve content from /wwwdata, and secure it with AppArmor (Ubuntu) or SELinux (RH-based distributions) and serve a nice index.html page on this web server,
  3. Restrict SSH to your IP address. HTTP ports must be open to the whole world. You can use systemd methods by providing override files or FirewallD.
  4. Deploy a new virtual machine of the distribution and version of your choice.
  5. Create a new /etc/hosts file using variables. If you use PowerShell DSC, you'll need...
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