./certbot-auto certonly

报错：

Transaction check error:   file /etc/rpm/macros.ghc-srpm from install of redhat-rpm-config-9.1.0-80.el7.centos.noarch conflicts with file from package epel-release-6-8.noarch  Error Summary -------------  Could not install OS dependencies. Aborting bootstrap

解决它需要：yum update ;