CentOS7 挂载本地光盘作为镜像源

1、将光盘镜像复制到文件夹下并挂载

mkdir /mnt/iso
mount -t iso9660 -o loop /root/yumISO/CentOS-7-x86_64-Everything-1804.iso /mnt/iso

2、配置开机自动挂载

vim /etc/fstab
添加：/root/yumISO/CentOS-7-x86_64-Everything-1804.iso /mnt/iso  iso9660  loop 0 0

3、配置源

3.1 备份源

cd /etc/yum.repos.d/
mkdir repo_bak
mv *.repo repo_bak
vim CentOS-Base.repo

3.2 添加源配置（在repoCentOS-Base.repo文件中添加如下内容）

[CentOS7-Localsource]  
name=CentOS7  
baseurl=file:///mnt/iso  
enabled=1  
gpgcheck=0

3.3 生成本地yum缓存

yum clean
yum makecache
yum list