ubuntu-14.04下安装KVM虚拟化

ubuntu-server 上安装KVM

一、检查CPU是否支持安装 KVM

egrep -o '(vmx|svm)' /proc/cpuinfo

二、安装KVM所需要的软件包

apt-get install qemu-kvm libvirt-bin virt-manager bridge-utils

注：virt-manager为GUI管理窗口，bridge-utils:用于网络桥接

三、检查安装是否成功

lsmod | grep kvm

四、拉取镜像

wget http://mirrors.ustc.edu.cn/ubuntu-releases/trusty/ubuntu-14.04.4-server-amd64.iso

qemu-img create -f raw /data1/kvm/data/kvm-20160724-01.img 1024G

五、网卡配置参照

cat > /etc/network/interfaces <<OEF
# The loopback network interface
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet manual

auto eth1
iface eth1 inet manual

auto br0
iface br0 inet static
address 118.123.9.86
netmask 255.255.255.192
gateway 118.123.9.65
dns-nameservers 144.114.114.114
bridge_ports eth0

auto br1
iface br1 inet static
address 10.10.20.16
netmask 255.255.255.0
gateway 10.10.20.254
bridge_ports eth1
OEF

六、虚拟机安装

virt-install --name kvm-20160725-01     --ram 8196     --vcpus=8,sockets=1,cores=8,threads=1     --arch=x86_64     --os-type=linux     --os-variant=ubuntutrusty     --accelerate --cdrom /data8/kvm/images/ubuntu-14.04.4-server-amd64.iso     --boot menu=on     --disk path=/data8/kvm/data/kvm-20160725-01.img,size=500,cache=writeback,device=disk     --network network=default,model=virtio     --graphics vnc,port=-1,listen=0.0.0.0

kvm iptables转发

#!/bin/bash
NAT_Host='125.65.43.197'
NAT_Port=3000
Dst_Host='10.10.20.100'
Dst_Port=22
iptables -t nat -A PREROUTING  -m $pro -p $pro  --dport $NAT_Port -j DNAT --to-destination $Dst_Host:$Dst_Port
iptables -t nat -A POSTROUTING -m $pro -p $pro --dport $Dst_Port -d $Dst_Host -j SNAT --to-source $NAT_Host
#iptables -t nat -A POSTROUTING -j MASQUERADE
iptables -I FORWARD -d 192.168.122.0/24 -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT

克隆：

virt-clone --original ubuntu-14-tmp --name kvm-20160715-01 --file /data1/kvm/data/kvm-20160715-01.img

在线添加网卡：

virsh attach-interface --domain kvm-20160725-01 --type bridge --source br0 --model virtio --config --live

进入virt-manager

在桌面版的命令窗出入：virt-manager

快速建虚拟机：

修改配置文件：

sudo vim /opt/cd-image/isolinux/isolinux.cfg

# D-I config version 2.0
include menu.cfg
default vesamenu.c32
prompt 0
timeout 1
ui gfxboot bootlogo

sudo vim /opt/cd-image/preseed/ubuntu-bbd-installer.seed 

截取修改的部分

# Static network configuration.
d-i netcfg/get_nameservers string 10.0.0.1
d-i netcfg/get_ipaddress string 10.0.0.171  (只修改此行，为虚拟机ip)
d-i netcfg/get_netmask string 255.255.255.0
d-i netcfg/get_gateway string 10.0.0.1
d-i netcfg/confirm_static boolean true

# from being shown, even if values come from dhcp.
d-i netcfg/get_hostname string bbdtao01 (虚拟机主机名)
d-i netcfg/get_domain string

镜像制作：

mkisofs -r -V "BBD Server Install CD" -cache-inodes -J -l -b isolinux/isolinux.bin -c isolinux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table -o ubuntu-bbd-installer-bbdhdp02-net162.iso /opt/cd-image/

创建虚拟机：

virt-install --name bbdhdp02 --hvm --ram 20480 --vcpus 2 --disk path=/data/kvm/bbdhdp02.qcow2,size=100 --bridge=br0 --accelerate --vnc --vncport=5982 --cdrom /home/bbd/ubuntu-bbd-installer-bbdhdp02-net162.iso -d

网址信息：

http://zhidao.baidu.com/link?url=inrg0yVfsi4JF_Okeq06FnMCZDGWUSwoJaK0LwxR7wne4-3hcaxiAFk0fod1DYNnFEbF2VIA9_4Fx1LhO9Z8fdjYMJyPlO8HgTsqQFe-JjS

http://www.linuxidc.com/Linux/2011-03/33653p3.htm

https://wiki.xargs.cn/wiki/doku.PHP/linux:kvm:kvm%E6%89%8B%E5%86%8C