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  • Book Overview & Buying OpenVZ Essentials
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OpenVZ Essentials

OpenVZ Essentials

By : Furman
4.5 (4)
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OpenVZ Essentials

OpenVZ Essentials

4.5 (4)
By: Furman
Buy this Book

Overview of this book

If you are a system administrator or Linux professional who wants to learn to set up, install, and manage OpenVZ containers on a server to implement OS-level virtualization, then this book is for you. Along with elementary knowledge of Linux programming, you need to have a conceptual understanding of system components and functions.
Table of Contents (8 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Installing OpenVZ
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1. Installing OpenVZ
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What is OS-level virtualization?
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What is OpenVZ?
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System requirements
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The disk partition scheme
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The yum configuration
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Installing vzkernel
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Installing vzctl and vzquota
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Restarting the server
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Summary
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2. OS Templates and Creating Containers
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2. OS Templates and Creating Containers
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Getting started with OS templates
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Selecting an OS template
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Container configuration
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Summary
3
3. OpenVZ Container Administration
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3. OpenVZ Container Administration
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Using vzlist
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The vzctl command
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Using vzctl to suspend and resume a container
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Using vzctl to mount and unmount a container
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Disk quotas
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Further use of vzctl set
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Summary
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4. Server Administration Using OpenVZ
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4. Server Administration Using OpenVZ
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Important system files
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Managing and configuring the CPU
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Memory management
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The /var/log/vzctl.log file
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Summary
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5. Using OpenVZ Web Panel – Part One
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5. Using OpenVZ Web Panel – Part One
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OpenVZ Web Panel
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Configuring /opt/ovz-web-panel/config/config.yml
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Logging in to OpenVZ Web Panel
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Dashboard
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Physical servers
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Summary
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6. Using OpenVZ Web Panel – Part Two
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6. Using OpenVZ Web Panel – Part Two
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Understanding the virtual server information page
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IP Addresses
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My Profile
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Requests
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Tasks
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Events Log
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Logout
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Summary
7
Index
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Index

Managing and configuring the CPU

In this section, we are going to cover CPU management, including how to manage CPU share and configuring the number of CPUs inside more than one container.

CPU share

You can use the OpenVZ CPU resource utilities to allot to any container a guarantee of the amount of CPU time it receives.

vzcpucheck

We use the vzcpucheck command to check the current hardware node CPU utilization using the following command:

vzcpucheck

vzcpucheck

In the previous example, we can see that when we run vzcpucheck, Current CPU utilization is 2501 (this is the total number of CPU units consumed by the running container and processes on the server) and Power of the node is 159625 (which is the total CPU processing power).

In this example, we used the vzcpucheck command to show our changes to the current CPU utilization for the container 101.

Setting up a container to use a set amount of CPU units

To set the container to use a set amount of CPU time, we use the following vzctl command:

vzctl set 101...
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Tech Concepts
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Programming languages
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OpenVZ Essentials
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