https://XXX/repodata/repomd.xml: [Errno 14] curl#35 “Peerreports it experienced an internal error.“

yum源引起的问题 更换yum源

1) 备份原yum源

sudo mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

2) 使用新yum源

sudo curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.163.com/.help/CentOS7-Base-163.repo          
sudo curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

  3) 生成缓存  

  sudo yum makecache