centos yum源配置

一、用Centos镜像搭建本地yum源
1.安装Centos后默认的yum源 如下
ll /etc/yum.repos.d/

2.把默认yum源备份(可选)
cp CentOS-Base.repo CentOS-Base-cp.repo

3.在虚拟机上挂载CentOS镜像文件
(1) mount -t iso9660 /dev/sr0 /opt/centos
(2) mount /dev/cdrom /mnt/cdrom

vim /etc/yum.repos.d/local.repo //自定义配置文件名

[local] //标签
name=local //设置yum源名称
baseurl=file:///opt/centos //挂载源
enabled=1 //可用性
gpgcheck=0 //校验

5.清除缓存
yum clean all //全部消除缓存
yum makecache //把yum源缓存到本地,加快软件的搜索好安装速度
sudo yum -y update
yum repolist //列出****个包

二、把默认的CentOS yum源修改成国内的aliyun-yum源
1.进入yum目录
cd /etc/yum.repos.d/

2.把默认yum源备份(可选项)
cp CentOS-Base.repo CentOS-Base.repo-cp

3.下载阿里云的yum源配置文件到/etc/yum.repos.d/
centos-yum-阿里官网配置
查看系统的版本:cat /etc/redhat-release
CentOS 6:

wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-6.repo
或者
curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-6.repo

CentOS 7:

wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
或者
curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo

CentOS 8:

wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-8.repo
或者
curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-8.repo

4.清除缓存
yum clean all 清除全部缓存
yum makecache //把yum源缓存到本地,加快软件的搜索好安装速度
sudo yum -y update //更新yum库存
yum repolist

三、把默认的CentOS yum源修改成国内的163源
1.安装Centos后默认的yum源如下
ll /etc/yum.repos.d/

2.把默认yum源备份(可选)
cp CentOS-Base.repo CentOS-Base.repo-cp

3.下载163 yum源repo文件
cat /etc/redhat-release //查看系统的版本

CentOS 5:

wget http://mirrors.163.com/.help/CentOS5-Base-163.repo

CentOS 6:

wget http://mirrors.163.com/.help/CentOS6-Base-163.repo

CentOS 7:

wget http://mirrors.163.com/.help/CentOS7-Base-163.repo

CentOS 8:

wget http://mirrors.163.com/.help/CentOS8-Base-163.repo

运行

wget -O /etc/yum.repos.d/CentOS8-Base-163.repo http://mirrors.163.com/.help/CentOS8-Base-163.repo

4.清除缓存
yum clean all 清除全部缓存
yum makecache //把yum源缓存到本地
sudo yum -y update //更新yum库存


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