Must-read for developers: Use Deployer to optimize the deployment process of PHP applications

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Release: 2023-07-13 17:56:02
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Must-read for developers: Use Deployer to optimize the deployment process of PHP applications

Introduction:
In the development of modern applications, an efficient deployment process is very important. The efficiency of the deployment process can not only reduce the workload of developers, but also improve the reliability and stability of applications. This article will introduce a tool called Deployer, which can help developers optimize the deployment process of PHP applications, and provide some code examples.

What is Deployer?
Deployer is an open source tool developed based on PHP, which is specially designed to simplify and optimize the application deployment process. It uses the SSH protocol and rich functions to automatically complete various tasks, such as code pulling, dependency installation, database migration, task scheduling, etc.

Installation and configuration of Deployer:
First, we need to install Deployer in the project. Open the terminal, enter the project root directory, and execute the following command:

composer require deployer/deployer --dev
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After the installation is complete, create a deploy.php file in the project root directory, and copy the following content to the file:

<?php
require 'vendor/autoload.php';

// 服务器配置
host('服务器IP')
    ->user('用户名')
    ->port(22)
    ->set('deploy_path', '项目部署路径');

// 项目配置
set('repository', 'git@github.com:用户名/项目名.git');
set('branch', 'master');
set('shared_files', ['.env']);
set('shared_dirs', ['storage']);

// 任务配置
task('deploy', function () {
    run('cd {{release_path}} && php artisan migrate --force');
    run('cd {{release_path}} && php artisan queue:restart');
});

// 执行任务
after('deploy:failed', 'deploy:unlock');
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In the above configuration, we need to modify the server configuration, project configuration and task configuration according to the actual situation. Among them, the server's IP, user name, port and project deployment path need to be filled in the server configuration; the project's Git warehouse address, branch name, and files and directories that need to be shared need to be filled in the project configuration; the task configuration defines the requirements during the deployment process tasks to perform.

Use Deployer to deploy:
After the installation and configuration are completed, we can use Deployer to deploy. In the terminal, enter the project root directory and execute the following command:

dep deploy
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This command will trigger Deployer to start the deployment process. Deployer will automatically pull the code from the Git repository and execute it in sequence according to the tasks defined in the configuration file. During the deployment process, specific tasks can be performed as needed, such as database migration and queue restart.

Code Example 1: Database Migration
In the above configuration file, we defined a task named deploy, in which php artisan migrate was executed - -force command. This is a command in the Laravel framework used to perform database migrations. During the deployment process, we can automatically perform database migration to ensure the correctness of the database structure.

Code Example 2: Queue Restart
In the above configuration file, we also defined a task named deploy, in which php artisan queue was executed :restart command. This is a command in the Laravel framework that is used to restart the queue service. During the deployment process, we can automatically restart the queue service to ensure that the new code can handle queue tasks correctly.

Conclusion:
Using Deployer can greatly simplify and optimize the deployment process of PHP applications. Through configuration files and task definitions, we can automatically complete tasks such as code pulling, dependency installation, database migration, and queue restart. I hope this article will be helpful for developers to learn and use Deployer.

Reference link:

  • [Deployer official document](https://deployer.org/)
  • [Deployer GitHub repository](https://github .com/deployphp/deployer)

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