LEMP is an archetypal model of web service solution stacks, named as an acronym of the names of its original four components: the Linux operating system, the Nginx HTTP Server, the MySQL/MariaDB relational database management system (RDBMS), and the PHP programming language.
This is how to install and configure LEMP (Linux, Nginx, MariaDB and PHP-FPM) on CentOS 7. Please follow this tutorial with your own risk!
UPDATE YOUR CENTOS
[sourcecode]yum update[/sourcecode]
INSTALL VIM AND ENABLE EPEL
Install the vim editor if it’s not already installed on the system and enable the EPEL repository by running:
[sourcecode]if ! type -path "vim" > /dev/null 2>&1; then yum install vim -y; fi
yum install epel-release[/sourcecode]
INSTALL MARIADB DATABASE SERVER
MariaDB is an enhanced, drop-in replacement for MySQL. It is the default database server in CentOS 7 / RedHat and can be installed on the virtual server using yum.
[sourcecode]yum install mariadb mariadb-server[/sourcecode]
once MariaDB is installed, restart it using systemctl
[sourcecode]systemctl restart mariadb
systemctl status mariadb[/sourcecode]
next, it is recommended to run MySQL/MariaDB post installation script mysql_secure_installation as in:
[sourcecode]mysql_secure_installation
Enter current password for root (enter for none):
Set root password? [Y/n] y
Remove anonymous users? [Y/n] y
Disallow root login remotely? [Y/n] y
Remove test database and access to it? [Y/n] y
Reload privilege tables now? [Y/n] y
[/sourcecode]
finally, edit /etc/my.cnf.d/server.cnf and add bind-address = 127.0.0.1 within the [mysqld] block:
[sourcecode]
vim +/^[mysqld /etc/my.cnf.d/server.cnf
[/sourcecode]
[sourcecode]
[mysqld]
bind-address = 127.0.0.1
restart the database server using systemctl for the changes to take effect:
systemctl restart mariadb
systemctl status mariadb
[/sourcecode]
verify MariaDB is listening on localhost only:
[sourcecode]
ss -tnlp | grep 3306
LISTEN 0 0 127.0.0.1:3306 *:* users:(("mysqld",1159,14))
[/sourcecode]
INSTALL NGINX HTTP SERVER
Nginx is an open source reverse proxy server for HTTP, HTTPS, SMTP, POP3, and IMAP protocols, as well as a load balancer, HTTP cache, and a web server (origin server). It is event-based driven and asynchronous which means it uses less resources and can handle much more load and concurrent requests.
Anyway, it can be installed on the virtual server using yum:
[sourcecode]
yum install nginx
[/sourcecode]
change to /etc/nginx directory and backup your original Nginx configuration file
[sourcecode]
cd /etc/nginx
cp nginx.conf{,.bak}
[/sourcecode]
Now edit /etc/nginx.conf and make sure it looks like the following:
[sourcecode]
vim nginx.conf
[/sourcecode]
[sourcecode]
user nginx;
worker_processes 2;
error_log /var/log/nginx/error.log;
#error_log /var/log/nginx/error.log notice;
#error_log /var/log/nginx/error.log info;
pid /run/nginx.pid;
events {
worker_connections 1024;
use epoll;
}
# set open fd limit to 30000
worker_rlimit_nofile 30000;
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;
log_format main ‘$remote_addr – $remote_user [$time_local] "$request" ‘
‘$status $body_bytes_sent "$http_referer" ‘
‘"$http_user_agent" "$http_x_forwarded_for"’;
#access_log /var/log/nginx/access.log main;
sendfile on;
keepalive_timeout 30;
server_tokens off;
connection_pool_size 256;
client_header_buffer_size 1k;
large_client_header_buffers 4 2k;
request_pool_size 4k;
output_buffers 1 32k;
postpone_output 1460;
types_hash_max_size 2048;
server_names_hash_bucket_size 64;
gzip on;
gzip_disable "MSIE [1-6]\.(?!.*SV1)";
gzip_http_version 1.1;
gzip_vary on;
gzip_proxied any;
gzip_comp_level 6;
gzip_buffers 16 8k;
gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript application/javascript text/x-js;
add_header Strict-Transport-Security "max-age=31536000; includeSubdomains;";
add_header X-Frame-Options SAMEORIGIN;
add_header X-Content-Type-Options nosniff;
add_header X-XSS-Protection "1; mode=block";
# include vhosts from sites-enabled/
include /etc/nginx/sites-enabled/*.conf;
# include configs from conf.d/*.conf
include /etc/nginx/conf.d/*.conf;
}
[/sourcecode]
You can edit the configuration to suit your needs, but in general, you would only have to tune the worker_processes option which is determined by the number of the CPUs your virtual server has.
The following command will display the number of CPUs on your CentOS VPS:
[sourcecode]
grep -c ‘model name’ /proc/cpuinfo
[/sourcecode]
Since we’re including configuration files from /etc/nginx/sites-enabled and /etc/nginx/conf.d, we will need to create some additional directories which will held the virtual server block configurations:
[sourcecode]
mkdir /etc/nginx/{sites-available,sites-enabled}[/sourcecode]
DEFAULT NGINX VHOST
Set-up the default Nginx vhost in /etc/nginx/sites-available/default.conf. This means that any domains which are pointed/resolving to your virtual server IP address and are not yet configured, will hit this server block (vhost)
[sourcecode]
vim /etc/nginx/sites-available/default.conf
server {
listen 80 default_server;
server_name _;
root /var/www/html/default;
location / {
index index.html index.htm;
}
error_page 404 /404.html;
location = /404.html {
root /var/www/html/default;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /var/www/html/default;
}
}
[/sourcecode]
create the document root directory for the default Nginx vhost and set-up some html files:
[sourcecode]
mkdir -p /var/www/html/default
cat << EOF > /var/www/html/default/index.html
<div style="color: #fff; width: 100%;">
<h1 align="center">Contoh dari emka.web.id</h1>
</div>
EOF
cat << EOF > /var/www/html/default/404.html
<div style="color: #fff; width: 100%;">
<h1 align="center">HTTP 404 Not Found</h1>
<h2 align="center">Contoh dari emka.web.id</h2>
</div>
EOF
cat << EOF > /var/www/html/default/50x.html
<div style="color: #fff; width: 100%;">
<h1 align="center">Server Error</h1>
<h2 align="center">Contoh dari emka.web.id</h2>
</div>
EOF
[/sourcecode]
INSTALL PHP-FPM
Install PHP support on the CentOS 7 VPS using yum
[sourcecode]
yum install php-fpm php-mysql php-mcrypt[/sourcecode]
also, install any other PHP module that your application requires. The list is shown below and you can always use yum search php- in the command line to get the list of available PHP modules on your CentOS 7 VPS:
php-bcmath – A module for PHP applications for using the bcmath library
php-cli – Command-line interface for PHP
php-common – Common files for PHP
php-dba – A database abstraction layer module for PHP applications
php-devel – Files needed for building PHP extensions
php-embedded – PHP library for embedding in applications
php-enchant – Enchant spelling extension for PHP applications
php-fpm – PHP FastCGI Process Manager
php-gd – A module for PHP applications for using the gd graphics library
php-imap – A module for PHP applications that use IMAP
php-intl – Internationalization extension for PHP applications
php-ldap – A module for PHP applications that use LDAP
php-mbstring – A module for PHP applications which need multi-byte string handling
php-mcrypt – Standard PHP module provides mcrypt library support
php-mysql – A module for PHP applications that use MySQL databases
php-mysqlnd – A module for PHP applications that use MySQL databases
php-odbc – A module for PHP applications that use ODBC databases
php-pdo – A database access abstraction module for PHP applications
php-pear.noarch – PHP Extension and Application Repository framework
php-pecl-memcache – Extension to work with the Memcached caching daemon
php-pgsql – A PostgreSQL database module for PHP
php-process – Modules for PHP script using system process interfaces
php-pspell – A module for PHP applications for using pspell interfaces
php-recode – A module for PHP applications for using the recode library
php-snmp – A module for PHP applications that query SNMP-managed devices
php-soap – A module for PHP applications that use the SOAP protocol
php-xml – A module for PHP applications which use XML
php-xmlrpc – A module for PHP applications which use the XML-RPC protocol
CONFIGURE PHP
Edit /etc/php.ini and change/set the following parameters:
[sourcecode]
cgi.fix_pathinfo=0
date.timezone = Europe/Amsterdam
expose_php = Off
[/sourcecode]
CONFIGURE PHP-FPM
Edit /etc/php-fpm.conf and change/set the following parameters:
[sourcecode]
emergency_restart_threshold = 10
emergency_restart_interval = 1m
process_control_timeout = 10
[/sourcecode]
CONFIGURE PHP-FPM POOLS
[sourcecode]
cd /etc/php-fpm.d/
mv www.conf{,.orig}
vim www.conf
[MAIN]
;listen = 127.0.0.1:9000
listen = /var/run/main-php.socket
listen.mode = 0666
user = nginx
group = nginx
request_slowlog_timeout = 5s
slowlog = /var/log/php-fpm/php.log
listen.allowed_clients = 127.0.0.1
pm = dynamic
pm.max_children = 7
pm.start_servers = 3
pm.min_spare_servers = 3
pm.max_spare_servers = 7
pm.max_requests = 400
listen.backlog = -1
pm.status_path = /status
request_terminate_timeout = 120s
rlimit_files = 131072
rlimit_core = unlimited
catch_workers_output = yes
php_value[session.save_handler] = files
;php_value[session.save_path] = /var/lib/php/session
php_admin_value[error_log] = /var/log/php-fpm/php-error.log
php_admin_flag[log_errors] = on
[/sourcecode]
ENABLE AND RESTART SERVICES
[sourcecode]
nginx -t
systemctl restart nginx
systemctl status nginx
systemctl restart mariadb
systemctl status mariadb
systemctl restart php-fpm
systemctl status php-fpm
systemctl enable nginx mariadb php-fpm
[/sourcecode]
If you’re one of our Linux VPS Hosting customers we can help you install and configure the LEMP stack on your virtual server for you free of charge. Just contact us and some of our experts will complete your request immediately.