Installing the configuration KVM on Centos 6.5

Building Rings Environment

Operating system: CentOS 6.5 Final x86_64

Kvm:qemu-kvm-0.12.1.2-2.479.el6_7.3.x86_64

Tools: Win7 and Vnc-viewer (first install VNC on server, connect to server CentOS via VNC Viewer)

First, install KVM and related software

1. KVM requires CPU support (Intel VMX or AMD SVM) to check if the CPU provides virtual technology support before installing KVM:

[Email protected] kvm]# egrep ' ^flags.* (VMX|SVM) '/proc/cpuinfo|more

There is a display indicating that the processor has the VT function

2. Virtual Technolege (VT, virtualization) on the CPU in the motherboard BIOS

3. Installing KVM and its required packages

[email protected] kvm]# Yum install KVM KMOD-KVM qemu kvm-qemu-img virt-viewer virt-manager libvirt Libvirt-python Pytho N-virtinst

Or

[email protected] kvm]# Yum Groupinstall KVM

4, check whether the KVM module is installed, using the following command to display two modules means the installation is complete

[Email protected] kvm]# Lsmod | grep KVM

Kvm_intel 52570 0

KVM 314739 1 Kvm_intel

Second, start the Virt-manager management interface

1, the Client

Vnc-viewer to server-side, requires server to install graphical interface.

2. Server-side

[Email protected] kvm]# yum–y install Tigervnc-server

[Email protected] kvm]# vncserver:1

Note: The default: 1 is 5901 port, please notice the firewall

Start the LIBVIRTD service and guarantee the next auto-start

[[Email protected] kvm]# service LIBVIRTD start

Starting LIBVIRTD daemon: [OK]

[Email protected] kvm]# chkconfig LIBVIRTD on

Iii. remote creation of a KVM virtual machine

Use VNC Viewer as connected, ip:1

650) this.width=650; "height=" 216 "title=" image "style=" border:0px; "alt=" image "src=" http://s3.51cto.com/wyfs02/M01 /78/ff/wkiom1ae3gxzg4eoaaai71nlshq868.png "border=" 0 "/>

1. Open application=> System Tools and virtual Machine Manager to install VMS, similar to VMware

650) this.width=650; "height=" 584 "title=" image (2) "style=" border:0px; "alt=" Image (2) "src=" http://s3.51cto.com/ Wyfs02/m02/78/ff/wkiom1ae3gadc-0faabxsf3eyxw433.png "border=" 0 "/>

2, right click "localhost" this line, "New" appears

650) this.width=650; "height=" 586 "title=" image (3) "style=" border:0px; "alt=" Image (3) "src=" http://s3.51cto.com/ Wyfs02/m00/78/ff/wkiom1ae3gedhsb7aab0vpjcgbs314.png "border=" 0 "/>

3. Enter the virtual machine name

650) this.width=650; "height=" 591 "title=" image (4) "style=" border:0px; "alt=" Image (4) "src=" http://s3.51cto.com/ Wyfs02/m01/78/ff/wkiom1ae3gmiwug3aadd6ag6p8q443.png "border=" 0 "/>

4. Select the ISO file to install the system

650) this.width=650; "height=" 590 "title=" image (5) "style=" border:0px; "alt=" Image (5) "src=" http://s3.51cto.com/ Wyfs02/m02/78/fd/wkiol1ae3ims3g2vaadj6ajzxuq862.png "border=" 0 "/>

5. Set the memory size and CPU core number

650) this.width=650; "height=" 587 "title=" image (6) "style=" border:0px; "alt=" Image (6) "src=" http://s3.51cto.com/ Wyfs02/m01/78/ff/wkiom1ae3g2s7s9taacdet6npve860.png "border=" 0 "/>

6. Allocate virtual disk size, select Cancel "Assign Now" here

650) this.width=650; "height=" 594 "title=" image (7) "style=" border:0px; "alt=" Image (7) "Src=" http://s3.51cto.com/ Wyfs02/m02/78/ff/wkiom1ae3g_spx80aadcvp9-pui292.png "border=" 0 "/>

7, we choose to use the default network connection mode, and then re-modify

650) this.width=650; "height=" 627 "title=" image (8) "style=" border:0px; "alt=" Image (8) "src=" http://s3.51cto.com/ Wyfs02/m00/78/fd/wkiol1ae3i_jfrnbaade7pi4zw0456.png "border=" 0 "/>

8, start the virtual machine, you can see the system installation Interface

650) this.width=650; "height=" 522 "title=" image (9) "style=" border:0px; "alt=" Image (9) "src=" http://s3.51cto.com/ Wyfs02/m01/78/ff/wkiom1ae3hsbphv9aak2mso9gni355.png "border=" 0 "/>

9, install the system after the virtual machine restarts, the installation of the virtual machine has been completed

650) this.width=650; "height=" 591 "title=" image (Ten) "style=" border:0px; "alt=" image () "Src=" http://s3.51cto.com/ Wyfs02/m02/78/ff/wkiom1ae3hbchmlmaacsmswvtrg500.png "border=" 0 "/>

Four, in the remote management of KVM virtualized physical host process, can dynamically adjust the memory of the VM, the implementation of clone, boot, shutdown, suspend the host and other operations.

1. The server side uses the Virsh List command to view the host virtualization situation

[Email protected] kvm]# Virsh list

Id Name State

----------------------------------------------------

2 Tsm-pro-test2 Running

[Email protected] kvm]#

I have a centos virtual machine on it, named Tsm-pro-test2.

2, the KVM virtual machine information is saved in the/var/lib/libvirt directory

650) this.width=650; "height=" "title=" image (one) "style=" border:0px; "alt=" image (one) "src=" http://s3.51cto.com/ Wyfs02/m00/78/ff/wkiom1ae3hbrl-j2aaaf483gpwg455.png "border=" 0 "/>

3. KVM Default Network configuration

KVM Internet has two configurations, one is default, it supports host and virtual machine visits, but also supports virtual machine access to the Internet, but does not support external access to virtual machines. Another way is bridge mode, which can be used as a host with independent IP in the network.

Five. Configure the bridge connection mode

1. Create a bridge
Under the/etc/sysconfig/network-scripts directory, create a ifcfg-br0 file with the type set to bridge:

[Email protected] network-scripts]# more Ifcfg-br0

Device=br0

Onboot=yes

Type=bridge

Bootproto=static

ipaddr=10.0.0.15

netmask=255.255.255.0

gateway=10.0.0.1

[Email protected] network-scripts]#

2. Bridge the physical interface to the bridge
Modify the contents of the eth0 (the server is using eth0 Internet), remove its IP-related information, plus "Bridge=br0", to bridge it to br0; if it is a dual network card or multiple network cards, follow this procedure to modify:

[email protected] network-scripts]# cat Ifcfg-eth0

Device=eth0

Type=ethernet

Onboot=yes

Nm_controlled=yes

Bootproto=dhcp

Bridge=br0

[Email protected] network-scripts]#

3. Restart the Physical Machine Network Service
[Email protected] ~]# service network restart

4. View current bridging conditions (one virtual machine is running)

[Email protected] network-scripts]# Brctl Show

Bridge name Bridge ID STP enabled interfaces

Br0 8000.98BE944266A2 No eth0

Vnet0

Virbr0 8000.5254007820DD Yes Virbr0-nic

[Email protected] network-scripts]#

5. Bridge the virtual machine interface to the bridge

# brctl Delif virbr0 vnet0

# brctl AddIf br0 vnet0

This step can also be done in virtual Machine Manager.

650) this.width=650; "height=" 508 "title=" image () "style=" border:0px; "alt=" Image () "Src=" http://s3.51cto.com/ Wyfs02/m01/78/ff/wkiom1ae3hirbtxuaaguhraeiam834.png "border=" 0 "/>

6. Set the virtual machine CentOS KVM IP to the same segment address: 10.0.0.*

At this point, the virtual machine can access the external network and can be accessed by the external network.

Installing the configuration KVM on Centos 6.5