Install Nginx, PHP 7, MariaDB 10 (LEMP) on CentOS 7

yum update

yum install epel-release

Nginx

yum install nginx

systemctl start nginx

systemctl enable nginx

MariaDB 10

vi /etc/yum.repos.d/MariaDB.repo

add

[mariadb]
name = MariaDB
baseurl = http://yum.mariadb.org/10.1/centos7-amd64
gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
gpgcheck=1
then

yum install MariaDB-server MariaDB-client

systemctl start mariadb Y, Y, Y, Y mysql_secure_installation

systemctl enable mariadb

PHP 7

add the Webtatic repo:

rpm -Uvh https://mirror.webtatic.com/yum/el7/webtatic-release.rpm

install

yum install php70w

see if it works or not

php -v


Search available modules

yum search php70



install modules you need

yum install php70w-xml php70w-soap php70w-xmlrpc php70w-mbstring php70w-json php70w-gd php70w-mcrypt php70w-mysql 
yum install php70w-intl php70w-tidy
yum install php70w-pecl-redis 
yum install php-pecl-mongodb
yum install php70w-fpm
yum install php70w-devel php70w-pear
yum install php70w-pecl-apcu php70w-opcache

vi /etc/php.ini

find cgi.fix_pathinfo=1 and then replace it with cgi.fix_pathinfo=0

vi /etc/php-fpm.d/www.conf

find and replace with:

listen = /var/run/php-fpm/php-fpm.sock
listen.owner = nobody
listen.group = nobody
user = nginx
group = nginx
Start php-fpm

systemctl start php-fpm

Enable it to boot

systemctl enable php-fpm

vi /etc/nginx/conf.d/default.conf

server {
    listen       80;
    server_name  localhost;

    # note that these lines are originally from the "location /" block
    root   /usr/share/nginx/html;
    index index.php index.html index.htm;

    location / {
        try_files $uri $uri/ =404;
    }
    error_page 404 /404.html;
    error_page 500 502 503 504 /50x.html;
    location = /50x.html {
        root /usr/share/nginx/html;
    }

    location ~ \.php$ {
        try_files $uri =404;
        fastcgi_pass unix:/var/run/php-fpm/php-fpm.sock;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
    }
}

If meet permission denied issue..

chown nginx:nginx /var/run/php-fpm/php-fpm.sock
or 
sudo chmod go+rw /var/run/php5-fpm.sock

firewall-cmd --permanent --zone=public --add-service=http
firewall-cmd --permanent --zone=public --add-service=https
firewall-cmd --reload