006. kvm vm clone

Clone a KVM Host Machine 1.1 to view VM configurations

1 [[email protected] ~] # Cat/etc/libvirt/qemu/vm01-centos6.8.xml 2 ............ 3 [[email protected] ~] # Ll/data/images/# VM disk file 4 total 1.3G 5-RW -------. 1 qemu 21G May 27 vm01-centos6.8.img 6 7 [[email protected] ~] # Virsh list -- all # Virtual Machine name 8 id name state 9 -------------------------------------------------- 10-vm01-centos6.8 shut off

1.2 clone operation

  1 [[email protected] ~]# virt-clone -o vm01-centos6.8 -n vm02-centos6.8 -f /data/images/vm02-centos6.8.img

Note: You can also use the following syntax --

  1 virt-clone --connect qemu:///system --original vm01-centos6.8 --name vm02-centos6.8 --file /data/images/vm02-centos6.8.img 

  1 [[email protected] ~]# virsh list --all  2  Id    Name                           State  3 ----------------------------------------------------  4  -     vm01-centos6.8                 shut off  5  -     vm02-centos6.8                 shut off

Suggestion: We recommend that you shut down or suspend the clone operation.

1.3 start and configure a new VM

1 [[email protected] ~] # Virsh start vm02-centos6.8 2 [[email protected] ~] # Virsh Console 3 # Enter VM 3 [[email protected] ~] # Vi/etc/hosts # modify as needed 4 [[email protected] ~] # Vi/etc/sysconfig/Network # modify 5 as needed [[email protected] ~] # Vi/etc/sysconfig/net-scripts/ifcfg-eth0 6 device = eth0 7 hwaddr = 52: 54: 00: B0: 6B: DC 8 onboot = yes # Start 9 nm_controlled = yes 10 bootproto = static 11 ipaddr = 172.24.8.41 12 netmask = 255.255.255.0 13 gateway = 172.24.8.2 14 [[email protected] ~] # Vi/etc/udev/rules. d/70-persistent-net.rules 15 # PCI device 0x1af4: 0x1000 (virtio-PCI) 16 subsystem = "Net", Action = "add", drivers = "? * ", ATTR {address} =" 52: 54: 00: B0: 6B: DC ", ATTR {type} =" 1 ", kernel = "ETH *", name = "eth0" 17 [[email protected] ~] # Shutdown-R now # restart takes effect

Tip:

1: If DHCP exists in the LAN, you can enable it. If it does not exist, you can configure a static IP address in the same network segment as the host.

# Ifconfig eth0 up

# Dhclient eth0

2: the MAC address must be consistent with the KVM xml configuration file and globally unique. Check that the address is <MAC address = '52: 54: 00: B0: 6B: dc'/>.

3: We recommend that you modify IP, Mac, UUID, and other information to prevent conflicts with the source host.

Clone 2.1 Between Two machines to view Virtual Machine configurations

• Source Host Name: vm01-centos6.8
• Source host configuration file:/etc/libvirt/qemu/vm01-centos6.8.xml
• Source host Disk Files:/data/images/vm01-centos6.8.img
• Clone Host Name: vm03-centos6.8
• Clone host profile:/etc/libvirt/qemu/vm03-centos6.8.xml
• Clone host Disk File:/data/images/vm03-centos6.8.img

Suggestion: We recommend that you shut down or suspend the clone operation.

2.1 copy the configuration file

  1 [[email protected] ~]# virsh dumpxml vm01-centos6.8 > /etc/libvirt/qemu/vm03-centos6.8.xml

2.2 copy Disk Files

  1 [[email protected] ~]# cp /data/images/vm01-centos6.8.img /data/images/vm03-centos6.8.img

2.3 modify configuration information

  1 [[email protected] ~]# vi /etc/libvirt/qemu/vm03-centos6.8.xml  2 ……  3 <name>vm03-centos6.8</name>  4 <uuid>1a35bbaf-988f-4467-abe4-5e43a97094cd</uuid>  5 ……  6 <source file=‘/data/images/vm03-centos6.8.img‘/>  7 ……  8 <graphics type=‘vnc‘ port=‘5903‘ autoport=‘no‘ listen=‘0.0.0.0‘>  9 …… 10 <mac address=‘52:54:00:7d:99:10‘/> 11 ……

Note: You must modify the preceding parameters to be inconsistent with those of the source VM.

2.4 redefinition of New VM configurations

  1 [[email protected] ~]# virsh define /etc/libvirt/qemu/vm03-centos6.8.xml

2.5 start a new VM

  1 [[email protected] ~]# virsh start vm03-centos6.8

2.6 enter new Vm and configure

  1 [[email protected] ~]# virsh console vm03-centos6.8

For more information, see section 1.3.

006. kvm vm clone