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2025-01-18 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Servers >
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This article mainly introduces "how to use Rancher to deploy high-performance PHP applications on K8S". In daily operation, I believe many people have doubts about how to use Rancher to deploy high-performance PHP applications on K8S. Xiaobian consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful to answer the doubts of "how to use Rancher to deploy high-performance PHP applications on K8S"! Next, please follow the editor to study!
Jieshao
PHP is one of the most popular programming languages on the Internet. It is used in many widely used content management systems, such as WordPress and Drupal, and provides core code for modern server-side frameworks such as Laravel and Symfony.
Although PHP is popular, it is also notoriously slow and difficult to maintain. These two problems have become less serious in recent years, but high-performance PHP applications still need two functions: OPcache and PHP FastCGI process Manager (PHP-FPM).
In this article, you will learn how to deploy a PHP application on Kubernetes using custom OPcache and PHP-FPM configurations to improve its performance. You will use Rancher to deploy a PHP application that uses custom environment variables to dynamically configure OPcache and PHP-FPM. We will show you how to build PHP-FPM configuration options in your Docker image and adjust them using environment variables in the container.
Performance in PHP
First, it will be helpful for the rest of this article to understand how network requests are handled in PHP applications.
PHP typically runs next to the web server, processing requests and sending them to PHP applications. You can use PHP-FPM or mod_PHP to run your application, but in this article we will use PHP-FPM because of its performance advantages and NGINX is the most commonly used web server with PHP-FPM.
OPcache introduction
OPcache accelerates the PHP application by storing the script in memory the first time it is called. In turn, subsequent requests will be loaded from memory rather than from the file system, which can increase your speed by 74%.
OPcache provides settings that you can adjust to improve the performance and reliability of your application. In this tutorial, you will learn how to set up a PHP Docker image that adjusts the memory limit of OPcache, the number of cache files, and how often the cache is revalidated.
PHP-FPM introduction
PHP-FPM (FastCGI process Manager) starts one or more processes to run your PHP application. Unlike mod_PHP (which bundles PHP into an Apache module), PHP-FPM gives you precise control over the number of processes that the server (or container) is running and how they should be started and stopped.
Finding an ideal PHP-FPM configuration is highly dependent on your application, the number of requests it serves, and the memory and CPU limits in the container. I recommend that you read Hayden James's article on this topic (links are at the end of the article) and test several different configurations in a load test environment.
Preparation for deploying a PHP application on K8S
Before you do this tutorial, you need to make the following preparations:
Docker installed on your local machine
Accounts on Docker Hub or other Docker image repositories
Rancher deployment (if you haven't already deployed, you can follow Quick start)
Kubernetes clusters managed by Rancher
All the code used in this tutorial is available in Github, or you can follow these steps to build the application from scratch.
PHP application
The application you are going to use is a PHP file that displays the current date. Create a new file and name it index.php:
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