KVM - Tag - Mulinux | Linux & DevOps Notes

Kvm Windows时间异常问题

Wed, 16 Dec 2020 11:23:23 +0800

KVM xml配置

<clock offset='localtime'>
  <timer name='rtc' tickpolicy='catchup' track='guest'/>
  <timer name='pit' tickpolicy='delay'/>
  <timer name='hpet' present='no'/>
</clock>

or

<clock offset='timezone' timezone='Asia/Shanghai'/>

Windows服务器配置

bcdedit /set USEPLATFORMCLOCK on #设置
bcdedit /enum #查看是否生效
bcdedit / deletevalue useplatformclock #取消配置

Kvm QGA(Qemu Guest Agent)部署

Tue, 11 Aug 2020 09:33:46 +0800

解决问题

重置KVM虚拟机密码

通过进程恢复kvm qcow2文件

Mon, 15 Jun 2020 09:51:09 +0800

删除镜像与配置文件

virsh undefine TEST
rm -f /home/images/TEST.qcow2

查找进程并记录进程号、uuid、mac

ps aux |grep TEST.qcow2

KVM-libvirt编译升级后回退问题记录('LIBVIRT_PRIVATE_0.10.2' not found)

Sun, 26 Apr 2020 09:51:09 +0800

问题说明

物理机libvirt版本编译升级至高版本，回退到旧版本后出现报错，如下图

Use Kvm

Mon, 23 Dec 2019 11:26:11 +0800

CentOS6部署kvm

安装

yum install -y qemu-kvm.x86_64 qemu-kvm-tools.x86_64 python-virtinst.noarch qemu-img.x86_64 bridge-utils.x86_64 libvirt virt-manager yum -y groupinstall "desktop"

桥接网卡

[root@KVM-PM ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0 
DEVICE=eth0
#HWADDR=52:54:00:57:40:40
TYPE=Ethernet
#UUID=fe15211b-a8fd-4497-9359-d57c792ff8e2
ONBOOT=yes
NM_CONTROLLED=no
BOOTPROTO=static
IPADDR=172.16.1.11
NETMASK=255.255.0.0
BRIDGE="br0"
[root@KVM-PM ~]# cat /etc/sysconfig/network-scripts/ifcfg-br0 
DEVICE=br0
TYPE=Bridge
ONBOOT=yes
NM_CONTROLLED=no
BOOTPROTO=static
IPADDR=192.168.168.110
NETMASK=255.255.255.0
GATEWAY=192.168.168.1

CentOS7部署KVM

yum groupinstall "fonts" "compat-libraries" "core" "development" "guest-agents" "virtualization-client" "virtualization-platform" "virtualization-tools"
yum install qemu-kvm python-virtinst virt-manager virt-top virt-viewer libvirt libvirt-client libvirt-python libguestfs-tools virt-install qemu-kvm-tools bridge-utils wget net-tools dejavu-lgc-sans-fonts xorg-x11-xauth xorg-x11-xinit xorg-x11-server-utils xorg-x11-font-utils xorg-x11-drv-ati-firmware
yum install virt-manager
yum install libvirt
yum info libvirtd
yum info libvirt
yum install qemu-kvm
yum install qemu-kvm-tools
service libvirtd start
systemctl start  libvirtd.service
systemctl enable  libvirtd.service
yum install xorg-x11-xauth
yum install xorg-x11-xauth xorg-x11-xinit xorg-x11-server-utils xorg-x11-font-utils xorg-x11-drv-ati-firmware
virt-manager
yum install dejavu-lgc-sans-fonts
yum install qemu-kvm libvirt virt-install bridge-utils
lsmod|grep kvm
brctl show
route
ip addr
yum install -y wget
yum install -y net-tools
cd /usr/local/src/
wget https://fedorapeople.org/groups/virt/virtio-win/virtio-win.repo -O /etc/yum.repos.d/virtio-win.repo
yum install -y virtio-win
virt-manager

桥接网卡

[root@a43sv ~]# cat /etc/sysconfig/network-scripts/ifcfg-enp5s0 
TYPE=Ethernet
BOOTPROTO=static
DEFROUTE=yes
PEERDNS=yes
PEERROUTES=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPV6_FAILURE_FATAL=no
NAME=enp5s0
UUID=557dfc61-71cf-4d38-86b3-2f135f862e54
DEVICE=enp5s0
ONBOOT=yes
BRIDGE=br0
[root@a43sv ~]# cat /etc/sysconfig/network-scripts/ifcfg-br0 
DEVICE=br0
TYPE="Bridge"
BOOTPROTO="static"
ONBOOT="yes"
DELAY="0"
STP="yes"
IPADDR=192.168.168.76
NETMASK=255.255.255.0
GATEWAY=192.168.168.1
DNS1=114.114.114.114
DNS2=129.29.29.29
NM_CONTROLLED=no

命令行创建windows2016

virt-install \
--name w2k16 \
--os-type=windows \
--ram=2048 --vcpus=2 \
--disk /home/images/w2k16.qcow2,bus=virtio,size=50 \
--disk /home/images/virtio-win-0.1.171_amd64.vfd,device=floppy \
--cdrom=/home/images/cn_windows_server_2016_x64_dvd_9718765.iso \
--network bridge=br0,model=virtio \
--virt-type kvm

收缩镜像

qemu-img convert -c -O qcow2 test.qcow2 test2.qcow2 # test2.qcow2是目标镜像
qemu-img convert -O qcow2 windows.qcow2 windows_new.qcow2
virt-sparsify --compress /tmp/centos.qcow2 centos-new.qcow2

清除网络相关硬件生成信息

virt-sysprep -d centos7

Deepin安装使用KVM

Wed, 21 Nov 2018 11:20:19 +0800

安装

sudo apt-get install kvm qtemu ##安装kvm和qt前端
apt install qemu-kvm libvirt-clients qemu-utils libvirt-daemon-system    # deepin 15.8
sudo apt-get install qemu-system    #deepin 15.8

卸载

sudo apt-get remove kvm qtemu ##卸载kvm和qt前端
apt-get install libvirt-bin virt-manager ##工作常用工具

ovf to qcow2

sudo apt-get install qemu-utils
qemu-img convert -O qcow2 input.vmdk output.qcow2

CentOS6/7开启nested嵌套虚拟化

Sat, 06 Oct 2018 14:25:16 +0800

启用nested

CentOS6

升级系统内核到Linux 3.X版本 rpm -ivh kernel-ml-3.18.3-1.el6.elrepo.x86_64.rpm 修改grub.conf vi /etc/grub.conf 将default=1改为default=0；且在 kernel 那一行的末端加上 “kvm-intel.nested=1”