openSUSE Leap Documentation › Virtualization Guide
ContentsContents
Virtualization Guide
  1. About This Manual
  2. I Introduction
    1. 1 Virtualization Technology
    2. 2 Introduction to Xen Virtualization
    3. 3 Introduction to KVM Virtualization
    4. 4 Introduction to Linux Containers
    5. 5 Virtualization Tools
    6. 6 Installation of Virtualization Components
    7. 7 Supported Guests, Hosts and Features
  3. II Managing Virtual Machines with libvirt
    1. 8 Starting and Stopping libvirtd
    2. 9 Guest Installation
    3. 10 Basic VM Guest Management
    4. 11 Connecting and Authorizing
    5. 12 Managing Storage
    6. 13 Managing Networks
    7. 14 Configuring Virtual Machines
  4. III Hypervisor-Independent Features
    1. 15 Disk Cache Modes
    2. 16 VM Guest Clock Settings
    3. 17 libguestfs
  5. IV Managing Virtual Machines with Xen
    1. 18 Setting Up a Virtual Machine Host
    2. 19 Virtual Networking
    3. 20 Managing a Virtualization Environment
    4. 21 Block Devices in Xen
    5. 22 Virtualization: Configuration Options and Settings
    6. 23 Administrative Tasks
    7. 24 XenStore: Configuration Database Shared between Domains
    8. 25 Xen as a High-Availability Virtualization Host
  6. V Managing Virtual Machines with QEMU
    1. 26 QEMU Overview
    2. 27 Setting Up a KVM VM Host Server
    3. 28 Guest Installation
    4. 29 Running Virtual Machines with qemu-system-ARCH
    5. 30 Virtual Machine Administration Using QEMU Monitor
  7. VI Managing Virtual Machines with LXC
    1. 31 Linux Containers
    2. 32 Migration from LXC to libvirt-lxc
  8. Glossary
  9. A Virtual Machine Drivers
  10. B Appendix
  11. C XM, XL Toolstacks and Libvirt framework
  12. D GNU Licenses
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openSUSE Leap 42.1

Virtualization Guide

Describes virtualization technology in general, and introduces libvirt—the unified interface to virtualization—and detailed information on specific hypervisors.

Publication Date: November 05, 2018
About This Manual
Available Documentation
Feedback
Documentation Conventions
I Introduction
1 Virtualization Technology
1.1 Overview
1.2 Virtualization Capabilities
1.3 Virtualization Benefits
1.4 Understanding Virtualization Modes
1.5 I/O Virtualization
2 Introduction to Xen Virtualization
2.1 Basic Components
2.2 Xen Virtualization Architecture
3 Introduction to KVM Virtualization
3.1 Basic Components
3.2 KVM Virtualization Architecture
4 Introduction to Linux Containers
4.1 Overview
5 Virtualization Tools
5.1 Virtualization Console Tools
5.2 Virtualization GUI Tools
6 Installation of Virtualization Components
6.1 Installing KVM
6.2 Installing Xen
6.3 Installing Containers
6.4 Patterns
7 Supported Guests, Hosts and Features
7.1 Supported VM Guests
7.2 Supported VM Host Servers for openSUSE Leap 42.1 VM Guests
7.3 KVM Hardware Requirements
7.4 Feature Support
II Managing Virtual Machines with libvirt
8 Starting and Stopping libvirtd
9 Guest Installation
9.1 GUI-Based Guest Installation
9.2 Installing from the Command Line with virt-install
9.3 Advanced Guest Installation Scenarios
10 Basic VM Guest Management
10.1 Listing VM Guests
10.2 Accessing the VM Guest via Console
10.3 Changing a VM Guest's State: Start, Stop, Pause
10.4 Saving and Restoring the State of a VM Guest
10.5 Creating and Managing Snapshots
10.6 Deleting a VM Guest
10.7 Migrating VM Guests
10.8 Monitoring
11 Connecting and Authorizing
11.1 Authentication
11.2 Connecting to a VM Host Server
11.3 Configuring Remote Connections
12 Managing Storage
12.1 Managing Storage with Virtual Machine Manager
12.2 Managing Storage with virsh
12.3 Locking Disk Files and Block Devices with virtlockd
12.4 Online Resizing of Guest Block Devices
12.5 Sharing Directories between Host and Guests (File System Pass-Through)
13 Managing Networks
13.1 Virtual Networks
13.2 Bridged Networking
14 Configuring Virtual Machines
14.1 Machine Setup
14.2 Storage
14.3 Controllers
14.4 Networking
14.5 Enabling Seamless and Synchronized Cursor Movement
14.6 Adding a CD/DVD-ROM Device with Virtual Machine Manager
14.7 Adding a Floppy Device with Virtual Machine Manager
14.8 Ejecting and Changing Floppy or CD/DVD-ROM Media with Virtual Machine Manager
14.9 Change the Machine Type with virsh
14.10 Adding a PCI Device to a VM Guest
14.11 Adding SR-IOV Devices
III Hypervisor-Independent Features
15 Disk Cache Modes
15.1 Disk Interface Cache Modes
15.2 Description of Cache Modes
15.3 Data Integrity Implications of Cache Modes
15.4 Performance Implications of Cache Modes
15.5 Effect of Cache Modes on Live Migration
16 VM Guest Clock Settings
16.1 KVM: Using kvm_clock
16.2 Xen Virtual Machine Clock Settings
17 libguestfs
17.1 VM Guest Manipulation Overview
17.2 Package Installation
17.3 Guestfs Tools
17.4 Troubleshooting
17.5 External References
IV Managing Virtual Machines with Xen
18 Setting Up a Virtual Machine Host
18.1 Best Practices and Suggestions
18.2 Managing Dom0 Memory
18.3 Network Card in Fully Virtualized Guests
18.4 Starting the Virtual Machine Host
18.5 PCI Pass-Through
19 Virtual Networking
19.1 Virtual Bridges
19.2 Network Devices for Guest Systems
19.3 Host-Based Routing in Xen
19.4 Creating a Masqueraded Network Setup
19.5 Special Configurations
20 Managing a Virtualization Environment
20.1 XL—Xen Management Tool
20.2 Automatic Start of Guest Domains
20.3 Event Actions
20.4 Saving Virtual Machines
20.5 Restoring Virtual Machines
20.6 Virtual Machine States
21 Block Devices in Xen
21.1 Mapping Physical Storage to Virtual Disks
21.2 File-Backed Virtual Disks and Loopback Devices
21.3 Resizing Block Devices
22 Virtualization: Configuration Options and Settings
22.1 Virtual CD Readers
22.2 Remote Access Methods
22.3 VNC Viewer
22.4 Virtual Keyboards
22.5 Dedicating CPU Resources
22.6 HVM Features
23 Administrative Tasks
23.1 The Boot Loader Program
23.2 Sparse Image Files and Disk Space
23.3 Migrating Xen VM Guest Systems
23.4 Monitoring Xen
23.5 Providing Host Information for VM Guest Systems
24 XenStore: Configuration Database Shared between Domains
24.1 Introduction
24.2 File System Interface
25 Xen as a High-Availability Virtualization Host
25.1 Xen HA with Remote Storage
25.2 Xen HA with Local Storage
25.3 Xen HA and Private Bridges
V Managing Virtual Machines with QEMU
26 QEMU Overview
27 Setting Up a KVM VM Host Server
27.1 CPU Support for Virtualization
27.2 Required Software
27.3 KVM Host-Specific Features
28 Guest Installation
28.1 Basic Installation with qemu-system-ARCH
28.2 Managing Disk Images with qemu-img
29 Running Virtual Machines with qemu-system-ARCH
29.1 Basic qemu-system-ARCH Invocation
29.2 General qemu-system-ARCH Options
29.3 Using Devices in QEMU
29.4 Networking in QEMU
29.5 Viewing a VM Guest with VNC
30 Virtual Machine Administration Using QEMU Monitor
30.1 Accessing Monitor Console
30.2 Getting Information about the Guest System
30.3 Changing VNC Password
30.4 Managing Devices
30.5 Controlling Keyboard and Mouse
30.6 Changing Available Memory
30.7 Dumping Virtual Machine Memory
30.8 Managing Virtual Machine Snapshots
30.9 Suspending and Resuming Virtual Machine Execution
30.10 Live Migration
30.11 QMP - QEMU Machine Protocol
VI Managing Virtual Machines with LXC
31 Linux Containers
31.1 Setting Up LXC Distribution Containers
31.2 Setting Up LXC Application Containers
31.3 Securing a Container Using AppArmor
31.4 Differences Between the libvirt LXC Driver and LXC
31.5 For More Information
32 Migration from LXC to libvirt-lxc
32.1 Host Migration
32.2 Container Migration
32.3 Starting the Container
Glossary
A Virtual Machine Drivers
B Appendix
B.1 Generating x509 Client/Server Certificates
C XM, XL Toolstacks and Libvirt framework
C.1 Xen Toolstacks
C.2 Import Xen Domain Configuration into libvirt
C.3 Differences Between the xm and xl Applications
C.4 External links
C.5 Saving a Xen Guest Configuration in an xm Compatible Format
D GNU Licenses
D.1 GNU Free Documentation License
List of Figures
2.1 Xen Virtualization Architecture
3.1 KVM Virtualization Architecture
13.1 Connection Details
13.2 Create virtual network
13.3 Create virtual network
13.4 Create virtual network
14.1 Details View of a VM Guest
14.2 Overview details
14.3 VM Guest Title and Description
14.4 Performance
14.5 Statistics Charts
14.6 Processor View
14.7 Memory View
14.8 Boot Options
14.9 Add a New Storage
14.10 Add a New Controller
14.11 Add a New Controller
14.12 Adding a PCI Device
23.1 Boot Loader Settings
27.1 Installing the KVM Hypervisor and Tools
27.2 Network Bridge
28.1 New 2GB Partition in Guest YaST Partitioner
29.1 QEMU Window with SLES 11 SP3 as VM Guest
29.2 Configuring Network Bridge with YaST
29.3 QEMU VNC Session
29.4 Authentication Dialog in Vinagre
List of Tables
7.1 Paravirtualized OS Support
7.2 Feature Support—Host (Dom0)
7.3 Feature Support—Paravirtualized Guest
7.4 Feature Support—Fully Virtualized Guest
25.1 Xen Remote Storage
C.1 Notation Conventions
C.2 New Global Options
C.3 Common Options
C.4 Domain Management Removed Options
C.5 USB Devices Management Removed Options
C.6 CPU Management Removed options
C.7 Other Options
C.8 xl create Changed Options
C.9 xm create Removed Options
C.10 xl create Added Options
C.11 xl console Added Options
C.12 xm info Removed Options
C.13 xm dump-core Removed Options
C.14 xm list Removed Options
C.15 xl list Added Options
C.16 xl mem-* Changed Options
C.17 xm migrate Removed Options
C.18 xl migrate Added Options
C.19 xm reboot Removed Options
C.20 xl reboot Added Options
C.21 xl save Added Options
C.22 xl restore Added Options
C.23 xm shutdown Removed Options
C.24 xl shutdown Added Options
C.25 xl trigger Changed Options
C.26 xm sched-credit Removed Options
C.27 xl sched-credit Added Options
C.28 xm sched-credit2 Removed Options
C.29 xl sched-credit2 Added Options
C.30 xm sched-sedf Removed Options
C.31 xl sched-sedf Added Options
C.32 xm cpupool-list Removed Options
C.33 xm cpupool-create Removed Options
C.34 xl pci-detach Added Options
C.35 xm block-list Removed Options
C.36 Other Options
C.37 Network Options
C.38 xl network-attach Removed Options
C.39 New Options
List of Examples
9.1 Example of a virt-install command line
10.1 Typical Output of kvm_stat
13.1 NAT Based Network
13.2 Routed Network
13.3 Isolated Network
13.4 Using an Existing Bridge on VM Host Server
20.1 Guest Domain Configuration File
27.1 Exporting Host's File System with VirtFS
29.1 Restricted User-mode Networking
29.2 User-mode Networking with Custom IP Range
29.3 User-mode Networking with Network-boot and TFTP
29.4 User-mode Networking with Host Port Forwarding
29.5 Password Authentication
29.6 x509 Certificate Authentication
29.7 x509 Certificate and Password Authentication
29.8 SASL Authentication
C.1 Converting Xen Domain Configuration to libvirt

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