003. KVM Virtual Machine deployment-centos6.8

1. Lab description

Qcow2 disk format is recommended for KVM virtual machines in centos 7. In this tutorial, centos 6.8 64 virtual machines are installed in KVM.

2. Command deployment process 2.1 upload an image

Use winscp to upload to/data/ISO/

2.2 format a disk

  1 virt-install --network bridge=br0,model=virtio --name=vm01-centos6.8 --ram=1024 --vcpus=2 --disk path=/data/images/vm01-centos6.8.img,size=20,bus=virtio --cdrom /data/iso/CentOS-6.8-x86_64-bin-DVD1.iso --vnc --vncport=5902 --vnclisten=0.0.0.0 --noautoconsole --accelerate

Parameter description:

-- Name: Specifies the Virtual Machine name.

-- Ram: memory size allocated.

-- Vcpus: Number of CPU cores allocated. The maximum number of CPU cores is the same as that of the physical machine.

-- Disk: Specifies the virtual machine image and size specifies the allocation size in G.

-- Network: indicates the network type. The default network type is used here. Generally, the bridge type is used.

-- Accelerate: acceleration

-- CDROM: Specifies the installation image ISO.

-- VNC: enables VNC remote management. Generally, it must be enabled for installation systems.

-- Vncport: Specifies the VNC monitoring port. The default port is 5900, and the port cannot be repeated.

-- Vnclisten: Specify the IP address bound to the VNC. 127.0.0.1 is bound by default. Here, it is changed to 0.0.0.0.

-- OS-type = Linux, Windows: common operating system types.

-- OS-variant =

Win7: microsoftwindows7

Vista: microsoftwindowsvista

Winxp64: microsoftwindowsxp (x86_64)

WINXP: microsoftwindowsxp

Win2k8: microsoftwindowsserver2008

Win2k3: microsoftwindowsserver2003

Freebsd8: freebsd8.x

Generic: Generic

Debiansqueeze: debiansqueeze

Debianlenny: debianlenny

Fedora16: fedora16

Fedora15: fedora15

Fedora14: fedora14

Mes5.1: mandrivaenterpriseserver5.1andlater

Mandriva2010: mandrivalinux2010andlater

Rhel6: redhatenterpriselinux6

Rhel5.4: redhatenterpriselinux5.4orlater

RHEL4: redhatenterpriselinux4

Sles11: suselinuxenterpriseserver11

Sles10: suselinuxenterpriseserver

Ubuntuoneiric: ubuntu11.10 (oneiricocelot)

Tunatty: ubuntu11.04 (nattynarwhal)

Tumaverick: ubuntu10.10 (maverickmeerkat)

Ubuntulucid: ubuntu10.04 (lucidlynx)

Ubuntuhard: ubuntu8.04lts (hardyheron)

2.3 KVM Virtual Machine Installation

  1 [[email protected] qemu]# virt-manager

Installation Process

3. log on to VM 3.1 and start VM.

  1 [[email protected] ~]# virsh list --all  2  Id    Name                           State  3 ----------------------------------------------------  4  -     vm01-centos6.8                 shut off  5 [[email protected] ~]# virsh start vm01-centos6.8

3.1 Virtual Machine Manager login

In the graphic interface, use virt-manager to log on from the graphic interface.

3.2 command line Logon

  1 [[email protected] ~]# virsh console vm01-centos6.8

4. Other notes: 4.1 kvm vm Network

It is possible that only the lo Nic is available after the kvm vm is logged on, but the eth0.

Run --

1 VI/etc/sysconfig/network-scripts/ifcfg-eth0 2 device = eth0 3 hwaddr = 52: 54: 00: CD: 4E: 34 # It must be globally unique with the KVM xml configuration file. 4 onboot = yes # Start 5 nm_controlled = Yes 6 bootproto = DHCP 7 prompt: If DHCP exists in the LAN, you can configure a static IP address in the same network segment as the host. 8 # ifconfig eth0 up 9 # dhclient eth0 # enable eth0 Nic.

4.2 failure in console connection to KVM VM

If the problem persists, You need to modify the relevant files in the KMV virtual machine. You can solve this problem in centos7 KVM virtual machine in the following ways --

1 [[email protected] ~] # Grubby -- Update-kernel = all -- ARGs = "console = ttys0" 2 centos6 can be solved through the following methods -- 3 [[email protected] ~] # Echo ssys0>/etc/securetty # host machine/etc/securetty add ttys0 4 [[email protected] ~] # Echo "S0: 12345: respawn:/sbin/agetty/ttys0 115200">/etc/inittab 5 [[email protected] ~] # Vi/etc/grub. conf 6 kernel/vmlinuz-2.6.32-431.el6.x86_64 Ro root =/dev/mapper/VolGroup-lv_root ...... Rhgb quiet console = ttys0 # Add console = ttys0

003. KVM Virtual Machine deployment-centos6.8