CentOS上安装KVM

yum install kvm kmod-kvm qemu kvm-qemu-img virt-viewer virt-manager libvirt libvirt-python python-virtinst

#yum -y install qemu-kvm libvirt python-virtinst bridge-utils policycoreutils-python;

mkdir /home/vhosts;

semanage fcontext -a -t virt_image_t /home/vhosts;#这个主要是打开SELinux设定，不然虚拟机无法访问存储文件

如果没有semanage，那么安装policycoreutils-python

添加防火墙规则 vi /etc/sysconfig/iptables

iptables -A INPUT -m state --state NEW -m tcp -p tcp --dport 5900:5920 -j ACCEPT;

iptables -A INPUT -p udp --dport 161 -j ACCEPT;

service iptables save;

service iptables restart;

sed -i s/192.168.122/10.1.0/g /etc/libvirt/qemu/networks/default.xml;

chkconfig libvirtd on;

service libvirtd start;

virsh pool-define-as vmpool --type dir --target /home/vhosts;定义池

virsh pool-start vmpool;开始池

virsh pool-autostart vmpool;自启动

yum install net-snmp -y;

sed -i s/'default public'/'0.0.0.0 zhxgsnmp'/g /etc/snmp/snmpd.conf; #替换

sed -i '54 aview systemview included .1' /etc/snmp/snmpd.conf; #

chkconfig snmpd on;

service snmpd start;

[root@ZHWP_01 ~]# qemu-img create -f qcow2 /home/vhosts/An_ceshi.qcow2 50G (50G硬盘，必须通过) An_ceshi 虚机名称 qemu-img创建qcow2格式文件

[root@ZHWP_01 ~]#chown qemu:qemu /home/vhosts/An_ceshi.qcow2

[root@ZHWP_01 ~]#virt-install --name zhao02_redis --ram 65536 --vcpus=8 --arch=x86_64 --disk path=/home/vhosts/zhao02_redis.qcow2,size=100,format=qcow2 --os-type=linux --os-variant='rhel6' --accelerate --cdrom=/home/software/CentOS-6.5-x86_64-minimal.iso --graphic type=vnc,port=-1,listen=0.0.0.0,password='cqmygysdss' --network bridge=br1

安装linux：

virt-install --name test_java02 --ram 8192 --vcpus=4 --arch=x86_64 --disk path=/home/vhosts/test_java02.qcow2,size=50,format=qcow2 --os-type=linux --os-variant='rhel6' --accelerate --cdrom=/home/software/CentOS-6.8-x86_64-minimal.iso --graphic type=vnc,port=-1,listen=0.0.0.0,password='cqmygysdss' --network bridge=br0

安装windows：

virt-install --name server02vm03_windows --ram 8192 --vcpus=4 --arch=x86_64 --disk path=/home/vhosts/server02vm03_windows.qcow2,size=200,format=qcow2 --os-type=windows --os-variant=win2k8 --accelerate --cdrom=/home/cn_windows_server_2012_r2_x64_dvd_2707961.iso --graphics type=vnc,port=-1,password='passw0rd',listen=0.0.0.0 --network bridge=br0

#virsh destroy centos6.5

#cd /etc/libvirt/qemu

#mv centos6.5.xml spider.xml

#vi spider.xml 修改name字段为spider

#virsh undefine centos6.5 #取消定义

#virsh define /etc/libvirt/qemu/spider.xml

#virsh start spider

virsh list --all

virsh edit test

virsh define test

virt-clone -o test -n tesst1 -f /home/vhosts/test1.qcow2

桥接网络：

DEVICE=br0

TYPE=Bridge

ONBOOT=yes

BOOTPROTO=none

NAME=br0

IPADDR=192.168.182.201

PREFIX=18

DEVICE=eth0

ONBOOT=yes

BRIDGE="br0"