yum更换国内源

1、cd /etc/yum.repos.d/

rm -f dvd.repo

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

或者

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

yum list

yum install epel-release-y

yum下载rpm包

只下载，不安装

sudo yum install --downloadonly <package-name>

下载源码包安装

tar xf cronolog-1.6.2.tar.gz

./configure

make

make install