yum_repo(){
    cd /etc/yum.repos.d/ && \
    dirname=$(mktemp -d repo-XXXXX)
    mv *.repo $dirname 2>/dev/null
    if [ $repo_type -eq 0 ];then
        echo "$repo yum.cloud.repo " >> /etc/hosts
        echo "开始下载资源，请等待"
        for i in nexus-Centos-Base.repo nexus-epel.repo nexus-mysql.repo nexus-docker-ce.repo nexus-kubernetes.repo
        do
            curl -s -o $i "https://gitea.beyourself.org.cn/newrain001/download/raw/branch/master/repo/$i"
            echo "yum 源 $i 配置完成"
        done

    elif [ $repo_type -eq 1 ];then
        curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
        curl -o /etc/yum.repos.d/epel.repo https://mirrors.aliyun.com/repo/epel-7.repo
        echo "阿里云源配置完成"
    fi
    echo "开始创建缓存"
    yum clean all && \
    yum makecache && \
    echo "缓存创建完成"
}
ping -w2 -c2 "$repo" &>/dev/null
if [ $? -eq 0 ];then
    repo_type=0
else
    repo_type=1
fi
yum_repo