服务端：
第一个历程：创建yum仓库目录

mkdir /local_yum

第二个历程：修改yum.conf配置文件，开启缓存keepcache=1

第三个历程：下载所需软件

1、yum -y install rsync

2、yum -y install mariadb-server mariadb
rpm -ivh http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
rpm -ivh  https://mirror.webtatic.com/yum/el7/webtatic-release.rpm

3、yum -y install php71w php71w-cli php71w-common php71w-devel \
php71w-embedded php71w-gd php71w-mbstring php71w-pdo php71w-xml php71w-fpm \
php71w-mysqlnd php71w-opcache php71w-mcrypt php71w-pecl-memcached php71w-pecl-mongodb php71w-pecl-redis

vim /etc/yum.repos.d/nginx.repo
    [nginx-stable]
    name=nginx stable repo
    baseurl=http://nginx.org/packages/centos/$releasever/$basearch/
    gpgcheck=1
    enabled=1
    gpgkey=https://nginx.org/keys/nginx_signing.key

4.yum install -y nginx

5.yum install -y nfs-utils rpcbind

6.yum -y install ansible

7.yum install -y httpd 

8.yum install -y createrepo （必装）

第四个历程：上传rpm包到yum仓库目录

find /var/cache/yum/x86_64/7/ -type f -name "*.rpm"|xargs mv -t /local_yum

第五个历程：初始化yum仓库

createrepo /local_yum

第六个历程：编写yum配置文件

vim /etc/yum.repos.d/local_yum.repo
[local_yum]
name=local_yum

baseurl=file:///local_yum

enabled=1
priority=1
gpgcheck=0

第七个历程：配置nginx文件

vim /etc/nginx/conf.d/local_yum.conf
server {
    listen       80;
    server_name  10.0.0.61;
        root   /local_yum;
        autoindex on;
        index  index.html index.htm;
    error_page   500 502 503 504  /50x.html;
    location / {
    root /local_yum;
    index index.html;
    }
}

systemctl start nginx

PS：每次加入新的rpm包，更新yum仓库

createrepo --update /local_yum