[虚拟化]-- 安装kvm的详细步骤（使用虚拟机安装,nat模式）

1.检查cpu是否支持硬件虚拟化

egrep -c '(vmx|svm)' /proc/cpuinfo

如果不支持

2.配置ali yum源，然后安装kvm

(1)#yum  install qemu-kvm  virt-manager libvirt libvirt-python python-virtinst bridge-utils  

3.分配磁盘，用于快照

先创建#mkdir -p /kvmtest/centos-6.5.qcow2 ，上传文件到目录下

再执行

[root@h18 kvmtest]# ls

CentOS-6.5-x86_64-minimal.iso

[root@h18 kvmtest]# qemu-img create -f qcow2 rhel6test.img 10G

Formatting 'rhel6test.img', fmt=qcow2 size=10737418240 encryption=off cluster_size=65536 

设置启动

#service libvirtd start  //开启libvirtd服务

#chkconfig libvirtd on  //开机启动

[root@h18 kvmtest]# 执行命令启动kvm

virt-install --virt-type kvm --name centos-6.5 --ram 1024 \

--vcpus 1 \

--cdrom=/kvmtest/CentOS-6.5-x86_64-minimal.iso \

--disk /kvmtest/rhel6test.img,format=qcow2 \

--network network=default \

--graphics vnc,listen=0.0.0.0 --noautoconsole \

--os-type=linux --os-variant=rhel6

启动成功后，查看虚拟机占用端口：5900

一般查看端口是否能访问用命令：telnat 192.168.142.115:8080

4、在linux下安装虚拟机

需要使用工具：

通过链接：h18的ip，进行远程安装linux

默认选择----》选择分区

根分区10个g都用完

然后默认，选择yes，下一步等待安装完成

5、使用命令

#virsh

重启命令

6、进入虚拟机，然后为其创建网卡

再重启网络：service network restart

如果失败，那么修改

#vi /etc/sysconfig/network

#vi /etc/udev/rules.d/70-presisent-network.rules

配置完成后，查看虚拟机里面的虚拟机ip:192.168.122.111

再在xshell里面ping该机器，确认是否正常

确认能ping通外网

7、给eth005搭建yum源阿里源

文件内容
# CentOS-Base.repo
#
# The mirror system uses the connecting IP address of the client and the
# update status of each mirror to pick mirrors that are updated to and
# geographically close to the client.  You should use this for CentOS updates
# unless you are manually picking other mirrors.
#
# If the mirrorlist= does not work for you, as a fall back you can try the 
# remarked out baseurl= line instead.
#
#
 
[base]
name=CentOS-$releasever - Base - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/$releasever/os/$basearch/
​​        http://mirrors.aliyuncs.com/centos/$releasever/os/$basearch/​​
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-6
 
#released updates 
[updates]
name=CentOS-$releasever - Updates - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/$releasever/updates/$basearch/
​​        http://mirrors.aliyuncs.com/centos/$releasever/updates/$basearch/​​
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-6
 
#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/$releasever/extras/$basearch/
​​        http://mirrors.aliyuncs.com/centos/$releasever/extras/$basearch/​​
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-6
 
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/$releasever/centosplus/$basearch/
​​        http://mirrors.aliyuncs.com/centos/$releasever/centosplus/$basearch/​​
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus
gpgcheck=1
enabled=0
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-6
 
#contrib - packages by Centos Users
[contrib]
name=CentOS-$releasever - Contrib - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/$releasever/contrib/$basearch/
​​        http://mirrors.aliyuncs.com/centos/$releasever/contrib/$basearch/​​
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=contrib
gpgcheck=1
enabled=0
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-6

清空缓存

#yum clean all

生成缓存

#yum makecache