1.1CPU
cat /proc/cpuinfo | grep vmx(intel)
cat /proc/cpuinfo | grep svm(AMD)
[root@linux-node1 ~]# cat /etc/redhat-release
CentOS release 6.8 (Final)
[root@linux-node1 ~]# uname -r
2.6.32-642.el6.x86_64
[root@linux-node1 ~]# getenforce
Disabled
[root@linux-node1 ~]# service iptables status
iptables: Firewall is not running.
[root@linux-node1 ~]# date
Sat419:40:10 CST 2018
[root@linux-node1 ~]# ifconfig eth0
NETWORKING=yes
HOSTNAME=linux-node1
10.0.0.101 linux-node1
10.0.0.102 linux-node2
[root@linux-node1 ~]# ping linux-node1
PING linux-node1 (10.0.0.101) 56(84) bytes of data.
64 bytes from linux-node1 (10.0.0.101): icmp_seq=1 ttl=64 time=0.045 ms
^C
--- linux-node1 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1896ms
rtt min/avg/max/mdev = 0.042/0.043/0.045/0.006 ms
[root@linux-node1 ~]# ping www.baidu.com
PING www.a.shifen.com (61.135.169.125) 56(84) bytes of data.
64 bytes from 61.135.169.125: icmp_seq=1 ttl=128 time=3.58 ms
64 bytes from 61.135.169.125: icmp_seq=2 ttl=128 time=3.80 ms
^C
--- www.a.shifen.com ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1313ms
rtt min/avg/max/mdev = 3.587/3.697/3.807/0.110 ms
二、安装配置
[root@linux-node1 ~]# /etc/init.d/libvirtd start
[root@linux-node1 ~]# ifconfig virbr0
virbr0
192.168.122.1
[root@linux-node1 ~]# brctl show
bridge name bridge idSTP enabled interfaces
virbr08000.525400ebdf39 yesvirbr0-nic
[root@linux-node1 ~]#
Chain INPUT (policy ACCEPT 179 packets, 16004 bytes)
Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
Chain OUTPUT (policy ACCEPT 126 packets, 20568 bytes)
[root@linux-node1 ~]# iptables -t nat -nvL
Chain PREROUTING (policy ACCEPT 345 packets, 26948 bytes)
Chain POSTROUTING (policy ACCEPT 6 packets, 456 bytes)
Chain OUTPUT (policy ACCEPT 6 packets, 456 bytes)
[root@linux-node1 ~]# iptables -t mangle -nvL
Chain PREROUTING (policy ACCEPT 556 packets, 45504 bytes)
Chain INPUT (policy ACCEPT 200 packets, 17736 bytes)
Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
Chain OUTPUT (policy ACCEPT 139 packets, 24396 bytes)
Chain POSTROUTING (policy ACCEPT 139 packets, 24396 bytes
[root@linux-node1 ~]# iptables -t raw -nvL
Chain PREROUTING (policy ACCEPT 107 packets, 8554 bytes)
Chain OUTPUT (policy ACCEPT 29 packets, 6892 bytes)
[root@linux-node1 ~]# qemu-img create -f raw /opt/Centos-6.8-x86_64.raw 5G
Formatting '/opt/Centos-6.8-x86_64.raw', fmt=raw size=5368709120
[root@linux-node1 ~]# file /opt/Centos-6.8-x86_64.raw
/opt/Centos-6.8-x86_64.raw: data
[root@linux-node1 ~]# qemu-img info /opt/Centos-6.8-x86_64.raw
image: /opt/Centos-6.8-x86_64.raw
file format: raw
virtual size: 5.0G (5368709120 bytes)
disk size: 0
[root@linux-node1 ~]# cd /opt
[root@linux-node1 opt]# rz CentOS-6.8-x86_64-bin-DVD1.iso
[root@linux-node1 opt]# ls
CentOS-6.8-x86_64-bin-DVD1.iso
[root@linux-node1 opt]# virt-install --virt-type kvm --name Centos-6.8-x86_64 --ram 512 --cdrom=/opt/CentOS-6.8-x86_64-bin-DVD1.iso --disk path=/opt/Centos-6.8-x86_64.raw --network network=default --graphics vnc,listen=0.0.0.0 --noautoconsole --os-type=linux --os-variant=rhel6
Starting install...
Domain installation still in progress. You can reconnect to
the console to complete the installation process.
2.2VNC:
reboot
kvm
----------------------------------------------------
Domain Centos-6.8-x86_64 started
[root@linux-node1 opt]# netstat -lntup|grep 5900
VNCattempting to reconnect to VNC Server Zlibinstream:inflate faild
:
VNCKVM:
[root@linux-node1 opt]# brctl show
bridge name bridge idSTP enabled interfaces
virbr08000.525400ebdf39 yesvirbr0-nic
vnet0
[root@linux-node1 opt]# brctl addbr br0
[root@linux-node1 opt]# brctl show
bridge name bridge idSTP enabled interfaces
br08000.000000000000 no
virbr0 8000.525400ebdf39 yes virbr0-nic
vnet0
[root@linux-node1 ~]# brctl addbr br0 && brctl addif br0 eth0 && ip addr del dev eth0 10.0.0.101/24 && ifconfig br0 10.0.0.101/24 up##
[root@linux-node1 ~]# virsh edit Centos-6.8-x86_64
bridge'>
bridge='br0'/>
[root@linux-node1 ~]# ps -ef|grep kvm
[root@linux-node1 ~]# kill 4261
[root@linux-node1 ~]# virsh start Centos-6.8-x86_64
[root@linux-node1 ~]# virsh destroy Centos-6.8-x86_64##
[root@linux-node1 ~]# virsh start Centos-6.8-x86_64
[root@linux-node1 ~]# virsh list --all
[root@linux-node1 ~]# brctl show
bridge name bridge idSTP enabled interfaces
br08000.000c292b9fb1 noeth0
vnet0
virbr08000.525400ebdf39yesvirbr0-nic
VNCKVM
原文：http://blog.51cto.com/13162375/2132272