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Mastering Linux Administration

You're reading from   Mastering Linux Administration Take your sysadmin skills to the next level by configuring and maintaining Linux systems

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Product type Paperback
Published in Mar 2024
Publisher Packt
ISBN-13 9781837630691
Length 764 pages
Edition 2nd Edition
Tools
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Authors (2):
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Julian Balog Julian Balog
Author Profile Icon Julian Balog
Julian Balog
Alexandru Calcatinge Alexandru Calcatinge
Author Profile Icon Alexandru Calcatinge
Alexandru Calcatinge
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Toc

Table of Contents (24) Chapters Close

Preface 1. Part 1:Basic Linux Administration
2. Chapter 1: Installing Linux FREE CHAPTER 3. Chapter 2: The Linux Shell and Filesystem 4. Chapter 3: Linux Software Management 5. Chapter 4: Managing Users and Groups 6. Chapter 5: Working with Processes, Daemons, and Signals 7. Part 2:Advanced Linux Administration
8. Chapter 6: Working with Disks and Filesystems 9. Chapter 7: Networking with Linux 10. Chapter 8: Linux Shell Scripting 11. Chapter 9: Securing Linux 12. Chapter 10: Disaster Recovery, Diagnostics, and Troubleshooting 13. Part 3:Server Administration
14. Chapter 11: Working with Virtual Machines 15. Chapter 12: Managing Containers with Docker 16. Chapter 13: Configuring Linux Servers 17. Part 4:Cloud Administration
18. Chapter 14: Short Introduction to Cloud Computing 19. Chapter 15: Deploying to the Cloud with AWS and Azure 20. Chapter 16: Deploying Applications with Kubernetes 21. Chapter 17: Infrastructure and Automation with Ansible 22. Index 23. Other Books You May Enjoy

Provisioning VMs using cloud-init

When you’re dealing with only one VM, things can be relatively simple. But when we have to create hundreds of VMs, manual creation can be daunting. One useful tool you can use for such a task is cloud-init. Another tool that is suitable for this kind of task is Ansible (there’s more on Ansible in Chapter 17). In this section, we will cover only cloud-init. It was developed by Canonical to be used as a tool for configuring VM instances on cloud platforms, and it is written in Python. Currently, it is considered an industry standard for provisioning cloud images. In the next subsection, we will briefly explain to you how cloud-init works.

Understanding how cloud-init works

According to the official cloud-init documentation, it is based on several configuration sources, specific boot stages, user data formats, vendor data, and instance metadata. The concept of boot stages is specific to cloud-init architecture, as it configures the...

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