Install LEMP Stack on Kubernetes

LEMP on Kubernetes

A LEMP software stack is a group of open source software that is typically installed together to enable a server to host dynamic websites and web apps. This term is actually an acronym which represents the Linux operating system, with the ENginx web server (which replaces the Apache component of a LAMP stack). The site data is stored in a MySQL-based database, and dynamic content is processed by PHP.

This guide demonstrates how to install a LEMP stack on a Kubernetes.

Prerequisites

- Docker installed
- Kubernetes installed (kubeadm in my case)
      # For installations go to: https://github.com/shashwot/Kubernetes

Project

$ cd /root/
$ git clone https://github.com/laravel/laravel.git laravel-app
$ cd laravel-app
$ mv .env.example .env
$ vi .env
       # Change the db connect as per your requirement.
       # In my case:
         DB_CONNECTION=mysql
         DB_HOST=db
         DB_PORT=3306
         DB_DATABASE=laravel
         DB_USERNAME=laraveluser
         DB_PASSWORD=your_laravel_db_password
$ docker run --rm -v $(pwd):/app composer install
$ vi Dockerfile

DockerFile

FROM php:7.3-fpm
# Copy composer.lock and composer.json
COPY composer.lock composer.json /var/www/
# Set working directory
WORKDIR /var/www
# Install dependencies
RUN apt-get update && apt-get install -y \
    build-essential \
    libzip-dev \
    libpng-dev \
    libjpeg62-turbo-dev \
    libfreetype6-dev \
    locales \
    zip \
    jpegoptim optipng pngquant gifsicle \
    vim \
    unzip \
    git \
    curl
# Clear cache
RUN apt-get clean && rm -rf /var/lib/apt/lists/*
# Install extensions
RUN docker-php-ext-install pdo_mysql mbstring zip exif pcntl
RUN docker-php-ext-configure gd --with-gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/ --with-png-dir=/usr/include/
RUN docker-php-ext-install gd
# Install composer
RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
# Add user for laravel application
RUN groupadd -g 1000 www
RUN useradd -u 1000 -ms /bin/bash -g www www
# Copy existing application directory contents
COPY . /var/www
# Copy existing application directory permissions
COPY --chown=www:www . /var/www
# Remove the Dockerfile from the build
RUN rm -rf Dockerfile
# Change current user to www
USER www
# Expose port 9000 and start php-fpm server
EXPOSE 9000
CMD ["php-fpm"]

DockerBuild

$ docker build -t “shashwot/php-fpm” .
# Or use the image below
$ docker pull shashwot/php-fpm
$ docker pull shashwot/nginx-more
$ docker pull mysql:5.7

Nginx-Configuration

server {
  listen 80;
  index index.php index.html;
  error_log  /var/log/nginx/php-error.log;
  access_log /var/log/nginx/php-access.log;
  root /var/www/public;
  location ~ \.php$ {
      try_files $uri =404;
      fastcgi_split_path_info ^(.+\.php)(/.+)$;
      fastcgi_pass php-fpm:9000;
      fastcgi_index index.php;
      include fastcgi_params;
      fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
      fastcgi_param PATH_INFO $fastcgi_path_info;
  }
  location / {
      try_files $uri $uri/ /index.php?$query_string;
      gzip_static on;
  }
}

PHP Commands

$ php artisan key:generate
$ php artisan config:cache
$ php artisan migrate

MySql Commands

$ mysql -u root -p
mysql> show databases;
mysql> create database laravel;
mysql> GRANT ALL ON laravel.* TO 'laraveluser'@'%' IDENTIFIED BY 'your_laravel_db_password';
mysql> FLUSH PRIVILEGES;

Kubernetes

$ git clone https://github.com/shashwot/nginx-php-fpm.git
$ cd k8s
$ kubectl apply -f .