before.安装软件
yum install libvirt libguestfs-tools qemu-kvm qemu-img yum groupinstall Virtualization "Virtualization Client" -y yum -y install libvirt libguestfs-tools -y
1.下载一个最小的centos6.5的iso文件
wget http://mirrors.163.com/centos/6.5/isos/x86_64/CentOS-6.5-x86_64-minimal.iso
2.创建一个空的镜像文件
qemu-img create -f qcow2 /tmp/CentOS6.5-working.qcow2 10G
3.创建虚拟机
qemu-img create -f qcow2 /tmp/CentOS6.5-working.qcow2 10G virt-install --virt-type=kvm --name=CentOS6.5 --ram=1024 --cdrom=/tmp/CentOS-6.5-x86_64-minimal.iso --disk=/tmp/CentOS6.5-working.qcow2,format=qcow2 --graphics=vnc,listen=0.0.0.0 --noautoconsole --os-type=linux --os-variant=rhel6
4.vnc远程安装，地址端口5900；分区只分一个,挂载到“/”，格式为ext4；
#重启后执行命令开启虚拟机 virsh start centos6.5
5.初始化
#!/bin/bash # add the EPEL repo and update rpm -Uvh http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm #yum -y update # install cloud-init yum -y install cloud-utils cloud-init parted git acpid chkconfig acpid on # install linux rootfs resize cd /tmp git clone https://github.com/flegmatik/linux-rootfs-resize.git cd linux-rootfs-resize ./install if [[ $? -eq 0 ]];then cd /tmp rm -rf linux-rootfs-resize else exit fi #change sshd port sed -i ‘s/^#Port 22/Port 65530/g‘ /etc/ssh/sshd_config # clean up the network interface stuff rm /etc/udev/rules.d/70-persistent-net.rules sed -i ‘/HWADDR/d‘ /etc/sysconfig/network-scripts/ifcfg-eth0 sed -i ‘/UUID/d‘ /etc/sysconfig/network-scripts/ifcfg-eth0 sed -i ‘/^ONBOOT/ s/no/yes/g‘ /etc/sysconfig/network-scripts/ifcfg-eth0 sed -i ‘/^NM_CONTROLLED/ s/yes/no/g‘ /etc/sysconfig/network-scripts/ifcfg-eth0 echo "NOZEROCONF=yes" >> /etc/sysconfig/network # graft up grub sed -i ‘s/timeout=5/timeout=0/g‘ /boot/grub/menu.lst sed -i ‘/^\skernel/ s/$/ console=tty0 console=ttyS0,115200n8/‘ /boot/grub/menu.lst # say something cute in /etc/motd echo "This is Openstack-CentOS-6" >> /etc/motd # notify we‘re halting echo "Halting instance in 5 seconds!" sleep 5 # halt the instance halt
6.善后操作
#清除网络相关硬件生成信息 virt-sysprep -d centos6.5 #压缩镜像 virt-sparsify --compress /tmp/CentOS6.5-working.qcow2 CentOS6.5-working_1.qcow2
7.完成
时间： 2024-08-03 18:01:17