1.kvm virt-manager管理工具

    yum groupinstall GNOME Desktop  -y
    yum install dejavu-lgc-sans-fonts  -y
    yum install -y virt-manager  -y

    yum install -y  libvirt   -y


2.kvm删除默认桥接网卡

virsh net-destroy default
virsh net-undefine default
systemctl restart libvirtd


3.网卡配置

[root@linux-node2 network-scripts]# cat ifcfg-br0
DEVICE=br0
BOOTPROTO=none
ONBOOT=yes
TYPE=Bridge
IPADDR=192.168.56.12
NETMASK=255.255.255.0
GATEWAY=192.168.56.2
DEFROUTE=yes
PV4_FAILURE_FATAL=yes
IPV6INIT=no
DELAY=0
USERCTL=no
[root@linux-node2 network-scripts]# cat ifcfg-eth0
TYPE=Ethernet
BOOTPROTO=static
DEFROUTE=yes
PEERDNS=yes
PEERROUTES=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
NAME=eth0
DEVICE=eth0
ONBOOT=yes
GATEWAY=192.168.56.2
BRIDGE=br0

4.重启

ifdown br0
ifdown eth0
ifup br0
ifup eth0


5.kvm迁移

virsh shutdown vmsname

virsh  dumpxml  vmsname > vmsname.xml

virsh domblklis  vmsname 

scp    disk   newserver:/dir

scp  vmsname.xml   newserver:/etc/libvirt/qemu/

virsh  define   vmsname