You're reading from Learn Azure Administration Explore cloud administration concepts with networking, computing, storage, and identity management

Product type Paperback

Published in Dec 2023

Publisher Packt

ISBN-13 9781837636112

Length 346 pages

Edition 2nd Edition

Tools

Azure

Concepts

Cybersecurity

Author (1):

Kamil Mrzygłód

View More author details

Table of Contents (23) Chapters

Preface

1. Part 1:Introduction to Azure for Azure Administrators

2. Chapter 1: Azure Fundamentals FREE CHAPTER

3. Chapter 2: Basics of Infrastructure as Code

4. Part 2: Networking for Azure Administrator

5. Chapter 3: Understanding Azure Virtual Networks

6. Chapter 4: Exploring Azure Load Balancer

7. Part 3: Administration of Azure Virtual Machines

8. Chapter 5: Provisioning Azure Virtual Machines

9. Chapter 6: Configuring Virtual Machine Extensions

10. Chapter 7: Configuring Backups

11. Chapter 8: Configuring and Managing Disks

12. Part 4: Azure Storage for Administrators

13. Chapter 9: Configuring Blob Storage

14. Chapter 10: Azure Files and Azure File Sync

15. Chapter 11: Azure Storage Security and Additional Tooling

16. Part 5: Governance and Monitoring

17. Chapter 12: Using Azure Policy

18. Chapter 13: Azure Monitor and Alerts

19. Chapter 14: Azure Log Analytics

20. Chapter 15: Exploring Network Watcher

21. Index

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Comprehending health probes

Azure Load Balancer needs to know which instances of our VMs are healthy so that it can safely distribute load there. The simplest idea is to just send a request to each machine and see whether it responds within the expected time frame. Health probes are exactly such a feature – it’s an inbuilt component of Azure Load Balancer that, once configured, will automatically discover healthy instances.

Health probes have slightly different capabilities, depending on the selected stock keeping unit (SKU), which is the selected tier of our load balancer:

Basic SKU supports TCP and HTTP only
Standard SKU supports the TCP, HTTP, and HTTPS protocols

There are also different behaviors for established TCP flows once the probe is down. For the Basic SKU, once the probe fails, TCP flows to the given backend pool will be terminated. The Standard SKU load balancer is much more forgiving and will maintain a connection, assuming there’...