centos7運行yum報如下提示：Run "yum repolist all" to see the repos you have

centos7運行yum報如下提示：

There are no enabled repos.
 Run "yum repolist all" to see the repos you have.
 To enable Red Hat Subscription Management repositories:
     subscription-manager repos --enable <repo>
 To enable custom repositories:
     yum-config-manager --enable <repo>

解決辦法：

yum -y install yum-utils

然后你查看你的/etc/yum.repos.d文件夾下有沒有出現CentOS-Base.repo文件

如果不能運行先試着更換yum源：

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

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
或者

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

 

如果wget不能安裝使用，就自己在網上下載scp移動到目錄下執行下面命令：

yum clean all
yum makecache

安裝完成后，再執行命令就可以了