Efficient batch deployment of PHP applications: using Deployer

Efficient batch deployment of PHP applications: Using Deployer

Introduction:
With the rise of cloud computing, containerization and microservice architecture, the deployment of modern applications has become increasingly complex and cumbersome. Especially in situations where a development team needs to deploy multiple PHP applications frequently, deploying each application manually is very time-consuming and error-prone. To solve this problem, we can use the Deployer tool to automate and simplify the deployment process of PHP applications. In this article, we will introduce the basic concepts and usage of Deployer, and attach specific code examples.

Deployer Introduction:
Deployer is an open source project deployment tool written in PHP. It can help us automate the application deployment process, including code pulling, environment configuration, database migration, dependency installation, etc. Deployer connects to a remote server via SSH protocol and performs a series of predefined tasks to complete the deployment of the application.

Deployment process:
The basic process of using Deployer to deploy PHP applications is as follows:

1. Install Deployer in the local environment
   Execute the following command in the command line, use Composer Install Deployer:

composer require deployer/deployer --dev

2. Create deploy.php configuration file
   Create a file named deploy.php in the root directory of the project and add the following content:

<?php
require 'recipe/common.php';

// 项目名称
set('application', 'My App');

// 项目代码库地址
set('repository', 'git@github.com:user/my-app.git');

// 服务器用户名
set('user', 'user');

// 服务器IP地址
server('production', 'production-server.com', 22)
    ->user(get('user'))
    ->forwardAgent();

// 服务器代码存放路径
set('deploy_path', '/var/www/html/my-app');

// 部署任务
task('deploy', function () {
    // 拉取代码库
    run('git clone {{repository}} {{release_path}}');

    // 安装项目依赖
    run('cd {{release_path}} && composer install');

    // 配置环境
    run('cp {{release_path}}/.env.example {{release_path}}/.env');

    // 迁移数据库
    run('cd {{release_path}} && php artisan migrate');

    // 重启服务
    run('sudo service php-fpm restart');
});

// 设置远程服务器
host('production');

// 配置服务器连接选项
set('ssh_type', 'native');
set('ssh_multiplexing', true);

// 指定默认任务
after('deploy', 'success');

3. Configure server connection options
   In the deploy.php configuration file, we use the following options to configure the server connection:

• ssh_type : SSH connection method, the default is native, you can also use other methods such as phpseclib.
• ssh_multiplexing: Whether to enable SSH connection multiplexing, the default is true.

4. Execute deployment command
   Execute the following command in the command line to deploy the code to the remote server:

dep deploy production

The above command will connect Go to the remote server and execute the deployment tasks defined in the deploy.php configuration file.

Summary:
By using Deployer, we can easily implement batch deployment of PHP applications. Deployer provides a concise and clear configuration method and powerful deployment task definition capabilities, allowing us to automate and simplify the deployment process. Using Deployer, development teams can quickly and efficiently deploy applications to multiple servers, improving development efficiency and reducing the possibility of errors.

Code examples can be found in the deployer’s official documentation, the specific address is: https://deployer.org/

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