Book Image

Hands-On Linux Administration on Azure - Second Edition

By : Kamesh Ganesan, Rithin Skaria, Frederik Vos
Book Image

Hands-On Linux Administration on Azure - Second Edition

By: Kamesh Ganesan, Rithin Skaria, Frederik Vos

Overview of this book

Thanks to its flexibility in delivering scalable cloud solutions, Microsoft Azure is a suitable platform for managing all your workloads. You can use it to implement Linux virtual machines and containers, and to create applications in open source languages with open APIs. This Linux administration book first takes you through the fundamentals of Linux and Azure to prepare you for the more advanced Linux features in later chapters. With the help of real-world examples, you’ll learn how to deploy virtual machines (VMs) in Azure, expand their capabilities, and manage them efficiently. You will manage containers and use them to run applications reliably, and in the concluding chapter, you'll explore troubleshooting techniques using a variety of open source tools. By the end of this book, you'll be proficient in administering Linux on Azure and leveraging the tools required for deployment.
Table of Contents (14 chapters)
13
Index

Networking

In Azure, the network settings, such as your IP address and DNS settings, are provided via Dynamic Host Configuration Protocol (DHCP). The configuration is very similar to the configuration of physical machines or VMs running on another platform. The difference is that the configuration is provided by Azure and normally shouldn't be changed.

In this section, you'll learn to identify the network configuration in Linux and how to match that information with the settings in Azure that were covered in the previous chapter.

Identifying the Network Interfaces

During the boot process and afterward, the Linux kernel is responsible for hardware identification. When the kernel identifies the hardware, it hands the collected information over to a process, a running daemon (background process), called systemd-udevd. This daemon does the following:

  • Loads the network driver if necessary.
  • It can assume responsibility for device naming.
  • Updates /sys with...