LEMP

Available in Classic

LEMP is an open source software service platform for web applications utilizing Nginx, MySQL, and PHP based on Linux. It is automatically configured on NAVER Cloud Platform's Compute infrastructure service and can be instantly put into service through a configuration process with only a few steps.

The advantages of using LEMP are as follows:

• You can use a stable web service development platform utilizing the infrastructure of NAVER Cloud Platform.
• You can select a server image and specifications to automatically install and use the LEMP stack service.

Creating and accessing server

The method for creating and accessing the server is the same as creating a regular server on NAVER Cloud Platform. The following are detailed procedures and reference guides:

Check LEMP installation

When the server is created, the LEMP components are automatically installed, so you can use the service immediately.
Check if the components are installed successfully through the following methods:

Access web

Access the LEMP service through the web, and then check if it is installed successfully.

The access URL is http://{public ip address}. If the index page of NAVER Cloud Platform's LEMP is run upon accessing, it is successfully installed.

Check installation directory

Access the server through the terminal program, and then call installation directory and logs to check if it is installed successfully.

• Check LEMP component installation directory information

# ls /root/lemp
conf  lemp_info.sh  lemp_restart.sh

• Check LEMP web root directory information

# ls /ncp/data/www
50x.html  index.html  ncp  ncp.jquery.js

Check PHP information

Create the PHP information file and check if the PHP and PHP modules are installed successfully.

1. Enter the following command to create the PHP information file.

   echo "<?php phpinfo(); ?>" > /ncp/data/www/phpinfo.php
   

   Note

   When a permission error occurs when running commands, change Linux permissions.

2. Enter http://{public ip address}/phpinfo.php in the web's address window and run it.

3. View relative information on the LEMP's PHP information page displayed on the web browser.

4. If you have checked all the information, delete the PHP information file for security reasons. Enter the following commands to delete files.

   rm /ncp/data/www/phpinfo.php
   

Manage LEMP service

While you use the service, you can stop running or restart the components manually, or check the components' properties and process.

Stop/run LEMP components

When you need to stop or run components manually, use the following commands:

• Stop and run all LEMP components

  [root@lemp ~]# LEMP_HOME=/root/lemp
  [root@lemp ~]# $LEMP_HOME/lemp_restart.sh
  
  ---------------------------------------------------------------
  [Info] LEMP Service Re-start
  ---------------------------------------------------------------
  OS Information : CentOS Linux release 7.8.2003 (Core)
  
  ---------------------------------------------------------------
  [NCP LEMP] nginx re-start
  ---------------------------------------------------------------
  [Info] nginx.service is stopped.
  [Info] nginx.service is started.
  
  ---------------------------------------------------------------
  [NCP LEMP] mysqld re-start
  ---------------------------------------------------------------
  [Info] mysql.service is stopped.
  [Info] mysql.service is started.
  

• Check LEMP component installation status

  [root@lemp ~]# LEMP_HOME=/root/lemp
  [root@lemp ~]# $LEMP_HOME/lemp_info.sh
  
  ---------------------------------------------------------------
  General Information of NCP LEMP Products
  ---------------------------------------------------------------
  
  NCP LEMP Default Website : http://(your_public_ip)
  NCP LEMP Default Root Directory : /ncp/data/www
  NCP LEMP MySQL root init password :(your_server_hostname)
  
  ---------------------------------------------------------------
  [NCP LEMP] httpd version
  ---------------------------------------------------------------
  nginx version: nginx/1.22.1
  
  ---------------------------------------------------------------
  [NCP LEMP] mysql database version
  ---------------------------------------------------------------
  mysql  Ver 14.14 Distrib 5.6.35, for debian-linux-gnu (x86_64) using  EditLine wrapper
  
  ---------------------------------------------------------------
  [NCP LEMP] php version
  ---------------------------------------------------------------
  PHP 7.2.34 (cli) (built: Oct  1 2020 13:37:37) ( NTS )
  Copyright (c) 1997-2018 The PHP Group
  Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies
  

• Nginx service Stop and run

  • Stop: systemctl stop nginx
  • Run: systemctl start nginx

• Nginx service Check process

  [root@lemp ~]# ps -ef | grep nginx
  root      3851     1  0 08:59 ?        00:00:00 nginx: master process /usr/sbin/nginx -c /etc/nginx/nginx.conf
  nginx     3852  3851  0 08:59 ?        00:00:00 nginx: worker process
  

• php-fpm service Check process

  [root@lemp ~]# grep php-fpm
  root      3834     1  0 08:59 ?        00:00:00 php-fpm: master process (/etc/php-fpm.conf)
  nginx     3836  3834  0 08:59 ?        00:00:00 php-fpm: pool www
  nginx     3837  3834  0 08:59 ?        00:00:00 php-fpm: pool www
  nginx     3838  3834  0 08:59 ?        00:00:00 php-fpm: pool www
  nginx     3839  3834  0 08:59 ?        00:00:00 php-fpm: pool www
  nginx     3840  3834  0 08:59 ?        00:00:00 php-fpm: pool www
  

• mysqld/mysql service Stop and run

  • Stop: systemctl stop mysql
  • Run: systemctl start mysql

• mysqld/mysql service Check process

  [root@lemp ~] ps -ef | grep mysqld
  mysql     8152     1  0 16:22 ?        00:00:00 /bin/sh /usr/bin/mysqld_safe --basedir=/usr
  mysql     8406  8152  0 16:22 ?        00:00:00 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --log-error=wp-1.err --pid-file=wp-1.pid --socket=/var/lib/mysql/mysql.sock --port=3306
  

Change MySQL root password

When you install LEMP, MySQL DB's root password is set as your host name. Before you use it, change the password to protect your security.
Enter the following commands to change the password.

[root@lemp ~]# mysql_secure_installation

...

NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MySQL
SERVERS IN PRODUCTION USE!  PLEASE READ EACH STEP CAREFULLY!

In order to log into MySQL to secure it, we will need the current
password for the root user.  If you have just installed MySQL, and
you haven not set the root password yet, the password will be blank,
so you should just press enter here.

...(rest omitted)