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Chapter 31.
267
Managing guests with the Virtual
Machine Manager (virt-manager)
This section describes the Virtual Machine Manager (virt-manager) windows, dialog boxes, and
various GUI controls.
virt-manager provides a graphical view of hypervisors and guest on your system and on remote
machines. You can use virt-manager to define virtualized guests. virt-manager can perform
virtualization management tasks, including:
• assigning memory,
• assigning virtual CPUs,
• monitoring operational performance,
• saving and restoring, pausing and resuming, and shutting down and starting virtualized guests,
• links to the textual and graphical consoles, and
• live and offline migrations.
31.1. Starting virt-manager
To start virt-manager session open the Applications menu, then the System Tools menu and
select Virtual Machine Manager (virt-manager).
The virt-manager main window appears.
- Red Hat Enterprise Linux 6 1
- Virtualization Guide 1
- Edition 1 2
- 1. Document Conventions 7
- 1.2. Pull-quote Conventions 9
- 1.3. Notes and Warnings 9
- 2. We need your feedback 10
- Introduction 11
- Virtualized CPUs (VCPUs) 13
- Emulated graphics devices 13
- Emulated system components 13
- Emulated sound devices 14
- Emulated network drivers 14
- Emulated storage drivers 14
- 1.5. Storage 16
- 1.7. Migration 17
- 1.8. V2V 18
- System requirements, support 19
- Hat Enterprise Linux 6 19
- System requirements 21
- File-based guest storage 22
- KVM compatibility 23
- Virtualization limitations 25
- 4.3. Application limitations 26
- Part II. Installation 29
- Need help installing? 31
- %packages 34
- Enterprise Linux system 35
- $ virt-install --help 37
- # virt-install \ 38
- # vim ifcfg-installation 47
- DEVICE=installation 47
- Disable iptables on bridges 49
- 2. Select the bridge 50
- Installing guests with PXE 51
- 3. Start the installation 51
- http://www.rhn.redhat.com 53
- Image files and SELinux 56
- Migration 58
- Enterprise Linux 5 69
- 8.2. Using virt-manager 70
- Verify the configuration 78
- 9.2. Installing Windows 2003 82
- Part III. Configuration 83
- Configuring virtualization in 83
- Network Configuration 85
- Guest configuration 86
- Disable NetworkManager 86
- Creating the bridge 87
- KVM Para-virtualized Drivers 89
- Modified initrd files 90
- AMD64 and Intel 64 issues 91
- Network performance issues 91
- # yum install virtio-win 92
- 3. Select the device type 93
- Creating guests 102
- Press S to install additional 108
- </disk> 109
- Install the drivers first 110
- 3. Finish the procedure 112
- Press Forward to continue 112
- PCI passthrough 117
- 6. Confirm the new device 123
- # virsh nodedev-list --tree 124
- 13.1. Introduction 127
- 13.2. Using SR-IOV 128
- 13.3. Troubleshooting SR-IOV 131
- Error starting the guest 132
- KVM guest timing management 133
- root (hd0,0) 134
- quiet processor.max_cstate=1 134
- /use pmtimer 135
- Part IV. Administration 137
- Server best practices 139
- Security for virtualization 141
- Testing new attributes 142
- 16.3. SELinux 143
- Non-virtualized environments 145
- Virtualized environments 145
- 17.2. sVirt labeling 146
- KVM live migration 149
- Configuring network storage 150
- Other networking methods 152
- Migrating with virt-manager 153
- Figure 18.1. Add Connection 153
- The libvirt daemon (libvirtd) 166
- 19.3. Transport modes 167
- Remote URIs 168
- Extra URI parameters 168
- Overcommitting with KVM 171
- Important 172
- Always test first 173
- The KSM service 175
- The KSM tuning service 176
- KSM variables and monitoring 176
- Deactivating KSM 177
- 22.1. Guest scheduling 179
- Migrating to KVM from other 181
- Figure 23.2. The storage tab 182
- 23.2.1. virt-v2v 185
- Parameters 186
- .netrc permissions 188
- 23.4. Configuration changes 189
- 24.2. Using qemu-img 193
- Supported formats 194
- Additional output 195
- 24.7. Very Secure ftpd 201
- <clock> 203
- <timer> 204
- </clock> 206
- Introduction to storage 207
- Storage concepts 209
- 25.2. Volumes 210
- Storage pools 213
- Chapter 26. Storage pools 216
- Security warning 219
- LVM-based storage pools 229
- 2. Add a new pool (part 1) 239
- NFS-based storage pools 243
- 2. Create a new pool (part 1) 244
- 27.1. Creating volumes 247
- 27.2. Cloning volumes 247
- Command (m for help): w 250
- Command (m for help): q 250
- # mke2fs -j /dev/sdb1 250
- # mount /dev/sdb1 /myfiles 250
- Miscellaneous storage topics 253
- Single path configuration 254
- Multiple path configuration 255
- # umount /mnt/guestboot 259
- # vgchange -an VolGroup00 259
- WWNN and WWPN validation 264
- Virtualization commands 265
- Managing guests with virsh 267
- Connecting to the hypervisor 269
- Forcing a guest to stop 272
- Getting the UUID of a guest 272
- Displaying guest Information 272
- Displaying host information 273
- Displaying the guests 273
- Configuring virtual CPU count 274
- Configuring memory allocation 275
- Migrating guests with virsh 275
- Managing virtual networks 275
- 31.1. Starting virt-manager 277
- [remotehost]# virt-manager 278
- A note on security and VNC 282
- Displaying guest details 285
- 31.7. Performance monitoring 291
- 31.8. Displaying CPU usage 293
- 31.9. Displaying Disk I/O 294
- 31.10. Displaying Network I/O 295
- Managing a virtual network 297
- Creating a virtual network 301
- Part VII. Troubleshooting 311
- Troubleshooting 313
- 34.2. kvm_stat 314
- 34.3. Log files 317
- 34.6. Loop device errors 318
- Note: BIOS steps 319
- A.1. Online resources 321
- A.2. Installed documentation 321
- Glossary 323
- Appendix B. Revision History 327
- Beta version released 328
- Appendix C. Colophon 329
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