Red Hat ENTERPRISE LINUX 5 - VIRTUALIZATION GUIDE Guida di Installazione Scaricare il pdf (Pagina 138)

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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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Red Hat ENTERPRISE LINUX 5 - VIRTUALIZATION GUIDE Guida di Installazione Pagina 138

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