Book Image

Mastering KVM Virtualization - Second Edition

By : Vedran Dakic, Humble Devassy Chirammal, Prasad Mukhedkar, Anil Vettathu
Book Image

Mastering KVM Virtualization - Second Edition

By: Vedran Dakic, Humble Devassy Chirammal, Prasad Mukhedkar, Anil Vettathu

Overview of this book

Kernel-based Virtual Machine (KVM) enables you to virtualize your data center by transforming your Linux operating system into a powerful hypervisor that allows you to manage multiple operating systems with minimal fuss. With this book, you'll gain insights into configuring, troubleshooting, and fixing bugs in KVM virtualization and related software. This second edition of Mastering KVM Virtualization is updated to cover the latest developments in the core KVM components - libvirt and QEMU. Starting with the basics of Linux virtualization, you'll explore VM lifecycle management and migration techniques. You’ll then learn how to use SPICE and VNC protocols while creating VMs and discover best practices for using snapshots. As you progress, you'll integrate third-party tools with Ansible for automation and orchestration. You’ll also learn to scale out and monitor your environments, and will cover oVirt, OpenStack, Eucalyptus, AWS, and ELK stack. Throughout the book, you’ll find out more about tools such as Cloud-Init and Cloudbase-Init. Finally, you'll be taken through the performance tuning and troubleshooting guidelines for KVM-based virtual machines and a hypervisor. By the end of this book, you'll be well-versed with KVM virtualization and the tools and technologies needed to build and manage diverse virtualization environments.
Table of Contents (22 chapters)
Section 1: KVM Virtualization Basics
Section 2: libvirt and ovirt for Virtual Machine Management
Section 3: Automation, Customization, and Orchestration for KVM VMs
Section 4: Scalability, Monitoring, Performance Tuning, and Troubleshooting

Configuring data collector and aggregator

In the previous steps, we managed to deploy Metricbeat. Now, we need to start the actual configuration. So, let's go through the configuration procedure, step by step:

  1. Go to /etc/metricbeat and open metricbeat.yml.

    Uncomment the lines that define elasticsearch as the target for Metricbeat. Now, we need to change one more thing. Find the line containing the following:

    setup.dashboards.enabled: false 

    Change the preceding line to the following:

    setup.dashboards.enabled: true

    We need to do this to load to dashboards so that we can use them.

  2. The rest of the configuration is done from the command line. Metricbeat has a couple of commands that can be run, but the most important is the following one:
    metricbeat setup

    This command will go through the initial setup. This part of the setup is probably the most important thing in the whole initial configuration – pushing the dashboard templates to Kibana. These templates will enable...