Centos7.0安装KVM实践

a13698822086

　　1、背景
    近日将主要精力放在Linux下测试MySQL Replication，宿主机安装了Centos7.0系统，需要安装三台虚拟机。因此，尝试了一下在Centos7.0上安装虚机机。
  
2、安装步骤
  
（1）yum源安装软件（前提：CPU开启虚拟化）
    [iyunv@localhost ~]# yum install qemu-kvm libvirt virt-install bridge-utils virt-manager vir-viewer
  
（2）查看模块支持
    [iyunv@localhost ~]# lsmod | grep kvm #make sure modules are loaded
    kvm_intel 138567 0
    kvm 441119 1 kvm_intel
  
（3）启动服务
    [iyunv@localhost ~]# systemctl enable libvirtd
    [iyunv@localhost ~]# systemctl start libvirtd
  
（4）配置网络
    [iyunv@localhost ~]# cd /etc/sysconfig/network-scripts/
    [iyunv@localhost network-scripts]# cp ifcfg-enp3s0 ifcfg-br0
    [iyunv@localhost network-scripts]# cat ifcfg-br0
    TYPE=Bridge
    BOOTPROTO=none
    DEVICE=br0
    ONBOOT=yes
    IPADDR0=192.168.9.233
    PREFIX0=26
    GATWAY0=192.168.9.254
  
    [iyunv@localhost network-scripts]# cat ifcfg-enp3s0
    HWADDR=AC:22:0B:74:57:1E
    TYPE=Ethernet
    BRIDGE=br0
    BOOTPROTO=none
    DEFROUTE=yes
    PEERDNS=yes
    PEERROUTES=yes
    IPV4_FAILURE_FATAL=no
    IPV6INIT=yes
    IPV6_AUTOCONF=yes
    IPV6_DEFROUTE=yes
    IPV6_PEERDNS=yes
    IPV6_PEERROUTES=yes
    IPV6_FAILURE_FATAL=no
    NAME="enp3s0"
    UUID=1c80a08d-be65-462b-9788-84dd477f3360
    ONBOOT=yes
  
    [iyunv@localhost network-scripts]# systemctl restart network