一键安装过程中提示包下载错误


#1

正在尝试其它镜像。
fail2ban-sendmail-0.9.7-1.el7. FAILED
https://ftp.yz.yamagata-u.ac.jp/pub/linux/fedora-projects/epel/7/x86_64/Packages/f/fail2ban-sendmail-0.9.7-1.el7.noarch.rpm: [Errno 14] curl#6 - “Could not resolve host: ftp.yz.yamagata-u.ac.jp; Unknown error”
Error downloading packages:
fail2ban-server-0.9.7-1.el7.noarch: [Errno 256] No more mirrors to try.
fail2ban-0.9.7-1.el7.noarch: [Errno 256] No more mirrors to try.
fail2ban-sendmail-0.9.7-1.el7.noarch: [Errno 256] No more mirrors to try.
fail2ban-firewalld-0.9.7-1.el7.noarch: [Errno 256] No more mirrors to try.