kvm克隆

傷城~ 2022-08-18 13:15 205阅读 0赞

一、本机直接克隆

1、查看虚拟机配置文件获取[磁盘文件][Link 1]路径

\[root@kvmsuzhu2 ~\]\# cat /etc/libvirt/qemu/hysen\_6101\_101.xml |grep 'source file'|grep img  
<source file='/data1/vmdisk/hysen\_6101\_101.img'/>  
\[root@kvmsuzhu2 ~\]\# cat /etc/libvirt/qemu/hysen\_6101\_101.xml |grep '^.\*/name>$'  
<name>hysen\_6101\_101</name>

\[root@kvmsuzhu2 ~\]\#

克隆前确认主机已经关闭：

\[root@kvmsuzhu ~\]\# virsh list --all  
Id 名称 状态  
\----------------------------------------------------  
3 dev\_5974\_74 running  
14 dev\_5954\_54 running  
\- hysen\_6101\_101 关闭  
\- openstack\_5978\_78 关闭 不关闭则克隆会报ERROR Domain with devices to clone must be paused or shutoff.

2、开始克隆

\[root@kvmsuzhu2 ~\]\# virt-clone -o hysen\_6101\_101 -n hysen\_6103\_103 -f /data1/vmdisk/hysen\_6103\_103.img   
正在克隆 hysen\_6101\_101.img | 30 GB 13:55   
Clone 'hysen\_6103\_103' created successfully.  
克隆已经完成30G的大小！

3、修改vnc[端口号][Link 2]，启动主机

\[root@kvmsuzhu2 ~\]\# cat /etc/libvirt/qemu/hysen\_6103\_103.xml |grep 'vnc'  
<graphics type='vnc' port='6101' autoport='no' listen='0.0.0.0'>  
\[root@kvmsuzhu2 ~\]\# virsh edit hysen\_6103\_103 //这里你必须用virsh edit命令编辑配置文件，用vim编辑是不会生效的！  
编辑了域 hysen\_6103\_103 XML 配置。  
\[root@kvmsuzhu2 ~\]\# cat /etc/libvirt/qemu/hysen\_6103\_103.xml |grep 'vnc'  
<graphics type='vnc' port='6103' autoport='no' listen='0.0.0.0'>  
\[root@kvmsuzhu2 ~\]\# virsh start hysen\_6103\_103.xml  
域 hysen\_6103\_103 已开始  
\[root@kvmsuzhu2 ~\]\# netstat -anltp |grep 6103  
tcp 0 0 0.0.0.0:6103 0.0.0.0:\* LISTEN 13740/qemu-kvm   
\[root@kvmsuzhu2 ~\]\#

4、修改主机名、[ip地址][ip]

修改主机名  
\[root@hysen\_6101\_101 ~\]\# vi /etc/sysconfig/network  
NETWORKING=yes   
NETWORKING\_IPV6=no   
HOSTNAME=hysen\_6103\_103   
GATEWAY=10.0.1.1  
\[root@hysen\_6101\_101 ~\]\# hostname hysen\_6103\_103  
修改IP地址  
\[root@hysen\_6103\_103 ~\]\# vi /etc/sysconfig/network-script/ifcfg-eth0  
\# Virtio Network Device   
DEVICE=eth0   
BOOTPROTO=static   
ONBOOT=yes   
HWADDR=52:54:00:ae:1d:7b   
IPADDR=10.0.1.117   
NETMASK=255.255.255.0  
重启网卡服务  
\[root@hysen\_6103\_103 ~\]\# service network start   
Bringing up loopback interface: \[ OK \]   
Bringing up interface eth0: \[ OK \]   
\[root@hysen\_6103\_103 ~\]\#

二、通过复制xml文件与磁盘文件复制克隆

我们这里还是拿hysen\_6101\_101虚拟机作为模板机器克隆。同样这种方法也需要模板机器已经关机！

1、复制xml配置文件

\[root@kvmsuzhu2 ~\]\# virsh dumpxml hysen\_6101\_101 > /etc/libvirt/qemu/hysen\_6105\_105.xml  
\[root@kvmsuzhu2 ~\]\# ls -l /etc/libvirt/qemu/hysen\_6105\_105.xml  
\-rw-r--r-- 1 root root 2748 10月 17 17:50 /etc/libvirt/qemu/hysen\_6105\_105.xml  
\[root@kvmsuzhu2 ~\]\#

2、复制hysen\_6101\_101虚拟机磁盘文件

\[root@kvmsuzhu2 ~\]\# cp /data1/vmdisk/hysen\_6101\_101.img /data1/vmdisk/hysen\_6105\_105.img  
\[root@kvmsuzhu2 ~\]\# ls /data1/vmdisk/hysen\_6105\_105.img  
/data1/vmdisk/hysen\_6105\_105.img  
\[root@kvmsuzhu2 ~\]\#

3、修改拷贝的配置文件

修改虚拟机的名称：<name>hysen\_6105\_105</name> 修改uuid编号：<uuid>13178d42-1055-8b94-1411-3c2bdd0e6e7a<</uuid> 修改mac地址：<mac address='54:52:01:11:12:1f'/> 修改disk位置：<source file='/data1/vmdisk/hysen\_6105\_105.img'/> 修改vnc端口：<graphics type='vnc' port='6105' autoport='no' listen='0.0.0.0'> 此时还是将该配置文件注册进来，无法通过virshedit进行编辑。 \[root@kvmsuzhu2 ~\]\# vim /etc/libvirt/qemu/hysen\_6105\_105.xml  
<name>hysen\_6101\_101</name>  
<uuid>13178d42-1055-8b94-1411-3c2bdd0e6e7a</uuid>  
<mac address='54:52:01:11:12:1f’/>  
<source file='/data/kvmdisk/cache-server.qcow2'/>  
<graphics type='vnc' port='6105' autoport='no' listen='0.0.0.0'>

4、定义新虚拟机配置文件

\[root@kvmsuzhu2 ~\]\# virsh define /etc/libvirt/qemu/hysen\_6105\_105.xml   
定义域 hysen\_6105\_105（从 /etc/libvirt/qemu/hysen\_6105\_105.xml）  
\[root@kvmsuzhu2 ~\]\#

5、启动虚拟机并设置开机自启

\[root@kvmsuzhu2 ~\]\# virsh start hysen\_6105\_105  
域 hysen\_6105\_105 已开始  
\[root@kvmsuzhu2 ~\]\# virsh autostart hysen\_6105\_105  
域 hysen\_6105\_105标记为自动开始  
\[root@kvmsuzhu2 ~\]\# virsh list --all |grep hysen\_6105\_105  
237 hysen\_6105\_105 running  
\[root@kvmsuzhu2 ~\]\#

6、vnc连接修改主机名、ip地址

4、修改主机名、ip地址  
修改主机名  
\[root@hysen\_6101\_101 ~\]\# vi /etc/sysconfig/network  
NETWORKING=yes   
NETWORKING\_IPV6=no   
HOSTNAME=hysen\_6105\_105   
GATEWAY=10.0.1.1  
\[root@hysen\_6101\_101 ~\]\# hostname hysen\_6105\_105  
修改IP地址  
\[root@hysen\_6105\_105 ~\]\# vi /etc/sysconfig/network-script/ifcfg-eth0  
\# Virtio Network Device   
DEVICE=eth0   
BOOTPROTO=static   
ONBOOT=yes   
HWADDR=54:52:01:11:12:1f   
IPADDR=10.0.1.118   
NETMASK=255.255.255.0  
重启网卡服务  
\[root@hysen\_6105\_105 ~\]\# service network start  
重启报错：device eth0 does not seem to be present, delaying initialization  
如下操作解决：  
\[root@hysen\_6105\_105 ~\]\# rm -rf /etc/udev/rules.d/70-persistent-net.rules 有说修改文件把eth0和eth1互换的也可以！  
\[root@hysen\_6105\_105 ~\]\# reboot  
重启之后再次登陆重启动网卡：  
\[root@hysen\_6105\_105 ~\]\# service network start  
Bringing up loopback interface: \[ OK \]   
Bringing up interface eth0: \[ OK \]

出自http://www.codesec.net/view/200831.html

[Link 1]: http://zhannei.baidu.com/cse/search?s=12535204980459304754&entry=1&q=%E7%A3%81%E7%9B%98%E6%96%87%E4%BB%B6
[Link 2]: http://zhannei.baidu.com/cse/search?s=12535204980459304754&entry=1&q=%E7%AB%AF%E5%8F%A3%E5%8F%B7
[ip]: http://zhannei.baidu.com/cse/search?s=12535204980459304754&entry=1&q=ip%E5%9C%B0%E5%9D%80