yum -y install wege screenLoaded plugins: fastestmirror, langpackshttp://mirrors.tencentyun.com/epel/7/One of the configured repositories failed (EPEL for redhat/centos7 - x86_64), and yum doesn't have enoughrepodata/repomd.xml from
我想在使用CentOS Linux release 7.4.1708 (Core)的服务器上托管一个Ruby on Rails应用程序。每次我通过SSH登录服务器时,我都会默认得到一个值为7的环境变量VERSION。当我尝试运行bundle exec rake db:migrate时,Rails会自动选择Version=7,并得到以下错误:No migration with version number 7
如果我手