Best Practice Guide for Deployer and PHP Applications

Best Practice Guide for Deployer and PHP Applications

Introduction:
In modern software development, deploying applications is a crucial step. It involves moving code from a development environment to a production environment to ensure that the application can run properly. However, manual deployment is often a time-consuming and error-prone process. Therefore, using automated tools to deploy applications is becoming increasingly popular. This guide will introduce Deployer and provide some best practices to help you better use Deployer to deploy PHP applications.

Deployer Introduction:
Deployer is an open source tool for deploying PHP applications, which is based on PHP. Deployer allows you to define deployment tasks by writing simple configuration files and deploy easily using the command line interface. Deployer supports various common deployment requirements, such as code pulling, database migration, cache cleaning, etc. In addition, Deployer can also use SSH protocol to communicate with remote servers to achieve remote deployment.

Install Deployer:
Installing Deployer is very simple. First, make sure your system has PHP installed and that the version is no lower than 5.6. Then, use the following command to install Deployer globally:

$ curl -LO https://deployer.org/deployer.phar
$ sudo mv deployer.phar /usr/local/bin/dep
$ sudo chmod +x /usr/local/bin/dep

Configure Deployer:
Configuring Deployer requires creating a configuration file named deploy.php. In this file, you can define various deployment tasks and server configurations. The following is the content of a sample configuration file:

<?php

namespace Deployer;

require 'recipe/common.php';

// 服务器配置
host('your-server-ip')
    ->stage('production')
    ->user('your-ssh-username')
    ->set('deploy_path', '/path/to/your/app');

// 项目配置
set('repository', 'git@github.com:your-username/your-app.git');
set('shared_files', []);
set('shared_dirs', []);

// 任务定义
task('build', function () {
    runLocally('npm install && npm run prod');
});

task('deploy:assets', function () {
    run('cd {{release_path}} && npm install && npm run prod');
});

// 钩子定义
before('deploy:symlink', 'deploy:assets');

In this configuration file, you can specify the relevant configuration of the remote server, as well as a series of deployment tasks. In the example configuration, we define two tasks: build and deploy:assets. buildThe task is executed locally and used to build front-end resources. deploy:assetsThe task is executed on the remote server and is used to install dependencies and build front-end resources. We also define a hook before('deploy:symlink', 'deploy:assets') that will perform the deploy:assets task before creating the symbolic link.

Execute the deployment command:
After the configuration is complete, you can use the following command to deploy the application:

$ dep deploy production

This will execute the deployment task on the remote server and put your application Deploy to the specified directory. You can also execute deployment commands by specifying a different environment, such as dep deploy staging.

Best Practices:
Here are some best practices for deploying PHP applications using Deployer:

1. Try to break down deployment tasks into smaller pieces: section for better management and debugging. For example, tasks such as front-end resource construction, database migration, and cache cleaning can be defined as different tasks.
2. Use version management: Use version management tools such as Git to manage your code. Deployer supports pulling code from the version control repository to ensure that each deployment uses the latest code.
3. Record deployment logs: Deployer allows you to save deployment logs to a log file. This can be used to review and debug any errors during deployment.

4. Back up the production environment: During the deployment process, back up important files and databases in the production environment to prevent unexpected situations.

Conclusion:
Using Deployer can significantly simplify the deployment process of PHP applications. This article introduces the basic installation and configuration of Deployer and provides some best practices to help you better use Deployer to deploy PHP applications. By following these best practices, you can deploy and manage your applications more efficiently and improve development efficiency.

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