- CentOS下载镜像
官网地址:https://www.centos.org/download/
国内镜像地址:https://mirrors.aliyun.com/centos/7/isos/x86_64/
推荐使用国内镜像
- 创建ISO存放目录以及挂载目录
mkdir /mnt/iso /mnt/cdrom
-
上传ISO镜像文件至/mnt/iso
-
挂载ISO镜像到挂载目录
mount -o loop /mnt/iso/*.iso /mnt/cdrom
5.检查挂载是否成功
df -h
-
备份/etc/yum.repos.d文件至备份文件夹
-
创建repo文件并存放
touch local.repo
mv ./local.repo /etc/yum.repos.d
- 写入信息至local.repo
[local]
name=local
#挂载地址:/mnt/cdrom
baseurl=file:///mnt/cdrom
enabled=1
gpgcheck=0
#cd /mnt/cdrom/可以看到KEY
gpgkey=file:///mnt/cdrom/RPM-GPG-KEY-CentOS-7
- 测试yum安装
yum clean all
yum install ntp
- 取消挂载
umount /mnt/cdrom