Centos6-8-install-kv

###Centos6 源已经不维护了，曲线安装.. 使用Alicloud的yum源

sed -i "s|enabled=1|enabled=0|g" /etc/yum/pluginconf.d/fastestmirror.conf
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
curl -o /etc/yum.repos.d/CentOS-Base.repo https://www.xmpan.com/Centos-6-Vault-Aliyun.repo
sed -i "s|6.10|6.7|g" /etc/yum.repos.d/CentOS-Base.repo

#epel，这个源很慢，没找到快的^_^
cd /etc/yum.repos.d/
cp epel.repo epel.repo.backup
vi epel.repo

[epel]
name=Extra Packages for Enterprise Linux 6 - $basearch
baseurl=http://archives.fedoraproject.org/pub/archive/epel/6/$basearch
failovermethod=priority
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6

[epel-debuginfo]
name=Extra Packages for Enterprise Linux 6 - $basearch - Debug
baseurl=http://archives.fedoraproject.org/pub/archive/epel/6/$basearch/debug
failovermethod=priority
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6
gpgcheck=1

[epel-source]
name=Extra Packages for Enterprise Linux 6 - $basearch - Source
baseurl=http://archives.fedoraproject.org/pub/archive/epel/6/SRPMS
failovermethod=priority
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6
gpgcheck=1

#注意清除其他无效repo

更新缓存
yum clean all
yum makecache

###install kvm

#降级冲突依赖包，如果存在
yum search --showduplicates libselinux
yum downgrade  libselinux-devel-2.0.94-5.8.el6.x86_64  libselinux-2.0.94-5.8.el6.x86_64 libselinux-utils-2.0.94-5.8.el6.x86_64

yum -y install qemu-kvm libvirt virt-install bridge-utils
# 查看KVM模块是否被正确加载
lsmod | grep kvm

service libvirtd status
service libvirtd start

#桥接网卡，安装VM实列...