remove old kernels:
unamr -r
rpm -qa | grep kernel
yum remove kernel-3.10.x.xxx-xxx
install aliyun repo:
cd /etc/yum.repos.d/
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
vi CentOS-Base.repo
yum clean all
yum makecache
yum update
history
yum list | grep epel-release
yum install -y epel-release
wget -O /etc/yum.repos.d/epel-7.repo http://mirrors.aliyun.com/repo/epel-7.repo
yum clean all
yum makecache
yum update
yum repolist all
yum repolist enabled
2.1.1、配置步骤
根据官网的说明,我们详细说说每步骤的意思。
(1)、备份,将 CentOS-Base.repo 为CentOS-Base.repo.backup
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
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(2)、下载新的 http://mirrors.aliyun.com/repo/Centos-7.repo,并命名为CentOS-Base.repo
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
或者
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
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(3)、清除缓存
yum clean all # 清除系统所有的yum缓存
yum makecache # 生成yum缓存
yum update
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2.1.2、epel源 安装和配置
(1)、查看可用的epel源
[java@localhost yum.repos.d]$ yum list | grep epel-release
epel-release.noarch 7-11 extras
[java@localhost yum.repos.d]$
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(2)、安装 epel
[java@localhost yum.repos.d]$ yum install -y epel-release
......省略.....
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(3)、配置阿里镜像提供的epel源
wget -O /etc/yum.repos.d/epel-7.repo http://mirrors.aliyun.com/repo/epel-7.repo
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4、清除缓存
yum clean all # 清除系统所有的yum缓存
yum makecache # 生成yum缓存
yum update
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2.1.3、查看yum源
查看所有的yum源:
yum repolist all
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查看可用的yum源:
yum repolist enabled
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版权声明:本文为CSDN博主「xiaojin21cen」的原创文章,遵循 CC 4.0 BY 版权协议,转载请附上原文出处链接及本声明。
原文链接:https://blog.csdn.net/xiaojin21cen/article/details/84726193
来源:https://www.cnblogs.com/ValyrianSteel/p/11518827.html