添加源文件
sudo rpm -Uvh http://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx.noarch.rpm
安装
sudo yum install -y nginx
启动服务
sudo service nginx start
复制配置文件
cd /etc/nginx/conf.d
sudo cp default.conf imooc.conf
把imooc.conf修改为
server {
listen 80;
#listen 9999;#(监听多端口)
server_name www.imooc.test www.imooc.test;#(多域名访问，域名用空格隔开即可）

root   /data/www;
index  index.html index.htm;
access_log /var/log/nginx/access_imooc.log imooc;#自定义日志地址:access_log 路径名称 名称;
#伪静态操作
location / {
rewrite ^(.*)\.htmp$ /index.html
}

}

reload nginx
sudo service nginx reload

Nginx默认初始页面：
/usr/share/nginx/html/index.html

upstream imooc_hosts{
server 118.89.106.129:80 weight=5;
server 192.168.0.112:80 weight=1;#设置复制均衡，比例是5比1
}

server {
listen 80;
listen 9999;
server_name www.imooc.test www.imooc2.test;
add_header Content-Type “text/plain;charset=utf-8”;
root /data/www;
index index.html index.htm;

location / {
    #rewrite ^(.*)\.htmp$ /index.html;
    proxy_set_header Host www.54php.cn;#
    proxy_pass http://imooc_hosts;
}   

}