7.7.为GUEST添加虚拟网卡tap10，并加入网桥tap10
# tunctl -t tap10
Set 'tap10' persistent and owned by uid 0
# brctl addif br0 tap10
# ifconfig tap10 up
# brctl show
bridge name bridge id STP enabled interfaces
br0 8000.001d72586f93 yes ens3
tap10
virbr0 8000.5254007ee7ca yes virbr0-nic
查看多出tap10
# ifconfig
br0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.3 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe80::21d:72ff:fe58:6f93 prefixlen 64 scopeid 0x20<link>
ether 00:1d:72:58:6f:93 txqueuelen 1000 (Ethernet)
RX packets 13615 bytes 6924507 (6.6 MiB)
RX errors 0 dropped 3445 overruns 0 frame 0
TX packets 5742 bytes 7811746 (7.4 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
ens3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
ether 00:1d:72:58:6f:93 txqueuelen 1000 (Ethernet)
RX packets 14517 bytes 7182587 (6.8 MiB)
RX errors 0 dropped 341 overruns 0 frame 0
TX packets 6733 bytes 7868932 (7.5 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 17
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1 (Local Loopback)
RX packets 14 bytes 770 (770.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 14 bytes 770 (770.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
tap10: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 5a:c7:ec:11:0b:b8 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
ether 52:54:00:7e:e7:ca txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
7.8.为虚拟桥接网卡tap10建立配置文件，重启系统时能随系统启动，并加入网桥 br0
# vim /etc/sysconfig/network-scripts/ifcfg-tap10
DEVICE=tap10
TYPE=Tap
ONBOOT=yes
BRIDGE=br0
8.安装vnc
yum install vnc-server tigervnc -y
设置vnc密码
# vncpasswd
9.开始安装kvm
9.1.创建虚拟磁盘目录
# mkdir -pv /home/kvm/image/
9.2.创建虚拟磁盘文件
# qemu-img create -o preallocation=metadata -f qcow2 /home/kvm/image/cent7_1.qcow2 20G
9.3.vnc连接
