systemctl stop firewalld.service #停止firewall 
  systemctl disable firewalld.service #禁止firewall开机启动

或者开启某端口 
firewall-cmd --permanent --add-port=50000/tcp
用该命令查询firewall-cmd --permanent --query-port=50000/tcp
如果是yes就是添加成功，如果是no就是没成功
成功后重载防火墙firewall-cmd --reload

2.关闭SELINUX

vi /etc/selinux/config 
#SELINUX=enforcing #注释掉 
SELINUX=disabled #增加 
:wq! #保存退出 
setenforce 0 #使配置立即生效

yum install yum-priorities -y 
wget http://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx.noarch.rpm rpm -ivh nginx-release-centos-7-0.el7.ngx.noarch.rpm yum install nginx

systemctl start nginx.service #启动nginx 
systemctl stop nginx.service #停止 
systemctl restart nginx.service #重启 
systemctl enable nginx.service #设置开机启动

cd /etc/nginx/conf.d/ 
vim default.conf 
把listen 80改成listen 81 
然后重启nginx 
systemctl restart nginx.service #重启nginx

yum install php-fpm 
安装完毕后
systemctl start php-fpm.service #启动php-fpm 
systemctl enable php-fpm.service #设置开机启动

location ~ \.php$ { 
    root      html; 
    fastcgi_pass  127.0.0.1:9000; 
    fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME /usr/share/nginx/html/$fastcgi_script_name; include fastcgi_params; }

在 /usr/share/nginx/html中新建一个test.php <?php echo 123;?>

访问http://ip:81/test.php即可看到nginx中的php页面

upstream site{ 
      server 172.16.170.138; 
      server 172.16.170.139; 
  } 
  server { listen 80; server_name ieccohomo.com; #charset koi8-r; #access_log /var/log/nginx/log/host.access.log main; location / { root /usr/share/nginx/html; index index.html index.htm; proxy_pass http://ieccohomo.com; }

yum install httpd #根据提示，输入Y安装即可成功安装 
  systemctl start httpd.service #启动apache 
  systemctl stop httpd.service #停止apache 
  systemctl restart httpd.service #重启apache 
  systemctl enable httpd.service #设置apache开机启动

yum install mariadb mariadb-server #询问是否要安装，输入Y即可自动安装,直到安装完成 
  systemctl start mariadb.service #启动MariaDB 
  systemctl stop mariadb.service #停止MariaDB 
  systemctl restart mariadb.service #重启MariaDB 
  systemctl enable mariadb.service #设置开机启动

yum install php php-mysql php-gd libjpeg* php-ldap php-odbc php-pear php-xml php-xmlrpc php-mbstring php-bcmath php-mhash 
#这里选择以上安装包进行安装，根据提示输入Y回车 
systemctl restart mariadb.service #重启MariaDB 
systemctl restart httpd.service #重启apache

cd /var/www/html
vi index.php #输入下面内容
 <?php
  phpinfo();
?>
:wq! #保存退出