Install KVM in CentOS 5.5

Install KVM in CentOS 5.5

Install KVM in Linux (CentOS 5.5) and perform the following steps:

1. Check whether the cpu supports virtualization. Run the command # cat/proc/cpuinfo | grep flags.

Vmx or svm indicates cpu support. svm indicates AMD platform and vmx indicates Intel Platform.

2. The KVM installation package is included in the installation package of the system disk. Mount the disk directly and set the yum source to the local disk.

Yum -- disablerepo = \ * -- enablerepo = c5-media groupinstall 'kvm 'Installation

Check whether the system has loaded the kvm module:

Method 1: [root @ mail ~] # Lsmod | grep kvm

Kvm_intel 86920 0

If kvm 226208 2 ksm and kvm_intel are not displayed, restart the system!

Method 2: [root @ mail ~] # Virsh-c qemu: // system list

Id Name State

---------------------------------- The installation is correct if no error message is displayed!

3. restart the computer, enter the BIOS, and enable the virtualization function of the CPU (find it by yourself, depending on the bios !!!)

BIOS --> Advanced --> Processor Configuration --> Intel (R) Virtualization logging log select Enable,

4. Create a bridge (no bridge-utils tool is required. The system has been installed by default)

Cd/etc/sysconfig/network-scripts/

Cp ifcfg-eth0 ifcfg-br0

Vi ifcfg-eth0

DEVICE = eth0

# BOOTPROTO = none comment out

HWADDR = 38: 60: 77: 30: 5a: 16 comment out

ONBOOT = yes

# TYPE = comment out Ethernet

BRIDGE = br0 add

# NETMASK = 255.255.255.0 comment out

# Comment out IPADDR = 192.168.0.32

# Comment out GATEWAY = 192.168.0.1

Vi ifcfg-br0

DEVICE = br0

BOOTPROTO = none

HWADDR = 38: 60: 77: 30: 5a: 16 can be left empty

ONBOOT = yes

TYPE = Bridge this is very important

NETMASK = 255.255.255.0

IPADDR = 192.168.0.32 I manually specified the ip address, or I can automatically obtain it through dhcp !!

GATEWAY = 192.168.0.1

Service network restart ifconfig

5. Go to the System graphical interface and click VirtualMachine Manager under Applications --> System Tools.

6. Install the operating system in KVM. The method is similar to that in VMware.

Select NAT (Bridge br0) when selecting network connection mode )!!!

The path of the virtual system image is/var/lib/libvirt/images/. Delete the corresponding. imgfile from the unwanted virtual system.

7. After the configuration is complete, wait until the system is installed. Because the network mode is br0, after the system is installed, restart the system to access the Internet.

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RHEL6 KVM virtualization creates a bridge NIC-Bridge

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