sed -i "s/enabled=1/enabled=0/g" /etc/yum.repos.d/epel.repo
yum -y install ca-certificates
sed -i "s/enabled=0/enabled=1/g" /etc/yum.repos.d/epel.repo
https://blog.youkuaiyun.com/zk673820543/article/details/50502853
sed -i "s/enabled=1/enabled=0/g" /etc/yum.repos.d/epel.repo
yum -y install ca-certificates
sed -i "s/enabled=0/enabled=1/g" /etc/yum.repos.d/epel.repo
https://blog.youkuaiyun.com/zk673820543/article/details/50502853