~~~~~ KVM virtualization ~~~~~, Kvm Virtualization

~~~~~ KVM virtualization ~~~~~, Kvm Virtualization
KVM Virtualization

To use KVM, a graphical system must be installed in the system environment.

1. Check whether the machine supports virtualization.

View Intel CPU: cat/proc/cpuinfo | grep -- color vmx

View amd cpu: cat/proc/cpuinfo | grep -- color svm

Such as Intel CPU

 

Supports virtualized

 

2. Install the KVM Module

[Root @ localhost ~] # Yum-y install kvm virt-manager libvirt virt-viewer

Kvm: KVM virtualization Module

Virt-manager: KVM graphical management tool

Libvirt: virtualization Service

Virt-viewer: Minimum tool for displaying the graphical console of a Virtual Machine

 

1) Start the KVM Service

[Root @ localhost ~] # Service libmongod start

 

 

2) Set auto-start upon startup

[Root @ localhost ~] # Chkconfig libmongod on

 

3) confirm correct loading of the kvm Module

[Root @ localhost ~] # Lsmod | grep kvm

 

 

 

4) Check whether KVM is successfully installed. Run the virsh command to check the status of the VM.

[Root @ localhost ~] # Virsh list

 

 

 

3. Configure the KVM bridging function

Bridge Introduction: the Bridge device we often call is actually a Bridge device, which is equivalent to the current L2 Switch used to connect all machines in the same network segment, so our goal is to add the network device eth0 to br0. At this time, br0 becomes a so-called switch device, and the eth0 of our physical machine is also connected to the above.

1) Installation Package

[Root @ localhost ~] # Rpm-ivh/mnt/Packages/bridge-utils-1.2-10.el6.x86_64.rpm

 

2) bind eth0 to the br0 bridge device:

[Root @ localhost ~] # Cd/etc/sysconfig/network-scripts/

# Back up eth0

[Root @ localhost network-scripts] # cp ifcfg-eth0/tmp/

# Edit the configuration file as follows:

[Root @ localhost network-scripts] # vim ifcfg-eth0.

DEVICE = eth0

NM_CONTROLLED = yes

IPADDR = 192.168.200.111 # Delete the blue content.

NETMASK = 255.255.255.0

GATEWAY = 192.168.200.1

DNS1 = 192.168.200.1

ONBOOT = yes

TYPE = Ethernet

BOOTPROTO = none

IPV6INIT = no

USERCTL = no

PREFIX = 24

DEFROUTE = yes

20174_failure_fatal = yes

NAME = "eth0"

HWADDR = 00: 0C: 29: 12: EC: 1E

BRIDGE = "br0" # insert this line at the end of the file

 

3) create a bridge File

[Root @ localhost network-scripts] # cp ifcfg-eth0 ifcfg-br0

DEVICE = br0

NM_CONTROLLED = yes

ONBOOT = yes

IPADDR = 192.168.200.111

NETMASK = 255.255.255.0

GATEWAY = 192.168.200.1

DNS1 = 192.168.200.1

BOOTPROTO = none

TYPE = Bridge

IPV6INIT = no

USERCTL = no

Disable NetworkManager after configuration, and then restart the NIC

[Root @ localhost ~] # Service NetworkManager stop

[Root @ localhost ~] # Service network restart

 

Check the IP address

 

 

Upload the image file to the/var/lib/libvirt/images/directory.

 

 

Start Remote Desktop

 

You can use the vnc software to remotely connect to the server.

 

View bridging information:

[Root @ localhost ~] # Brctl show

 

 

Open the virtual terminal manager in VNC

[Root @ localhost ~] # Virt-manager

 

Right-click Create VM

 

Select the image path and installation version

 

Set the memory size and number of CPUs, which is similar to that installed in VMware.

 

Click Finish to create the virtual system.

 

The right side is the same as installing the system.

Virtual Machine installation completed

 

Virtual Machine Configuration

 

Common commands for KVM virtual machines

[Root @ localhost ~] # Virsh list # show only running virtual machines

 

 

[Root @ localhost ~] # Virsh list -- all # display all virtual machines, including virtual machines in disabled state

[Root @ localhost ~] # Virsh start server1 # start the strongserver Virtual Machine

[Root @ localhost ~] # Virsh shutdown server # Shut down the server Virtual Machine

 

Solve the problem that shutdown cannot shut down the KVM Virtual Machine

Install and start the acpi service in the Linux virtual machine of the installed KVM. The virsh shutdown command controls the power of the Virtual Machine by sending the acpi command, the acpi service is not installed by default when the kvm virtual machine is installed on the linux system, so it will not be processed.

Solution: you only need to install and enable the acpid service on the Virtual Machine. Execute the following command:

Configure the network yum Source

Install the httpd service on a real machine

[Root @ localhost ~] # Yum-y install httpd

[Root @ localhost ~] # Service httpd start

[Root @ localhost ~] # Mount/dev/cdrom/var/www/html, on a real machine, you can directly upload the image to the machine and mount it to the corresponding directory .)

 

Configure the KVM yum Source

[Root @ localhost ~] # Ssh 192.168.200.112

 

[Root @ localhost ~] # Cd/etc/yum. repos. d/

[Root @ localhost yum. repos. d] # vim rhel-source.repo.

 

[Root @ localhost yum. repos. d] # yum list all

[Root @ localhost yum. repos. d] # yum-y install acpid

[Root @ localhost yum. repos. d] # service acpid start

[Root @ localhost yum. repos. d] # chkconfig acpid on

 

 

 

Test on a real machine

[Root @ localhost ~] # Virsh list # view the running server status

 

[Root @ localhost ~] # Virsh shutdown server1 # disable server1 VM

 

[Root @ localhost ~] # Virsh autostart server1 # Set server1 to automatically start after the host is started

[Root @ localhost ~] # Virsh list viewing disabled

 

 

 

 

Author: compy Date: QQ: 2071959367