Set up a kvm vm in CentOS 6.3

Set up a kvm vm in CentOS 6.3

Suddenly receiving requirements from the boss, we need to deploy KVM on the servers of the existing data center so that the internal network testing machine can reach the Internet for testing. To be honest, it is a headache because our hardware resources are too short (small companies ...), there is only GB of space left, so I have to run two virtual machines on top, and I have to deal with the increasing data at the moment. This makes me speechless... hadoop is on this server... so, what do you know? The amount of data is dropping every day... start to build ~

I. server hardware environment

Server Model	DELL R710
CPU Model	Intel (R) Xeon (R) CPU X5650@2.67GHz * 2
Number of physical CPU threads	24
Memory size	64 GB
Disk Model	WDC WD10EZEX-00ZF5A0
System	CentOS release 6.3 _ x64
Remaining disk space	100 GB

Ii. Requirement Description

Build KVM and deploy CentOS 6. x on existing resources without affecting other services. Here I chose Centos 6.2, As for why. Because it is lower than the host version, it has better compatibility.

Note that the documents of other online students are in the bridge mode and communicate with each other like a vswitch. Due to limited requirements, my kvm vm accesses the Internet through nat. Therefore, you do not need to configure the bridges in a complex way. You can use the random virbr0.

Iii. installation and deployment
1.
Check whether the CPU supports Virtualization

[Root @ localhost ~] # Egrep-o 'vmx | svm '/proc/cpuinfo

Vmx

Vmx

......

Vmx

2. Install kvm

[Root @ localhost ~] # Yum-y install qemu-kvm libvirt python-vritinst bridge-utils avahi dmidecode

3. View Bridges

[Root @ localhost ~] # Brctl show

Bridge name bridge id STP enabled interfaces

Virbr0 8000.5254004272bb yes virbr0-nic

4. Create a VM storage and image directory

[Root @ localhost ~] # Mkdir/data/kvm/{iso, vm}-p

5. Create a virtual machine

[Root @ jxq-st-ms-02 ~] # Virt-install-v-n hd-nn \

> -- Ram 1024 \

> ## Memory

-- Vcpus = 1 \

# Number of cpu Cores

-- Disk path =/data/kvm-img/hd-nn.img, size = 10, bus = virtio \

# Specify the storage location and capacity of a Virtual Disk

-- Accelerate \

-- Cdrom/data/iso/CentOS-6.2-x86_64-minimal.iso \

# Boot Image

-- Vnc -- vncport = 5901 \

# Vnc remote connection port. The default port is 5900.

-- Vnclisten = 0.0.0.0 \

# Specify the listening address

-- Network bridge = virbr0 \

# Specify the network connection mode

-- Force

6. Use vnc for remote control installation. After that, you will be familiar with it !~

So far, kvm has been built so happily.

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