Use Deployer to achieve seamless deployment and rollback of PHP projects

Use Deployer to achieve seamless deployment and rollback of PHP projects

Introduction:
In the process of developing and maintaining PHP projects, how to achieve efficient deployment and rollback is very important. This article will introduce how to use Deployer, an excellent deployment tool, to achieve seamless deployment and rollback operations of PHP projects.

Introduction to Deployer:
Deployer is an open source deployment tool based on PHP. It provides simple DSL syntax and rich functions, which can help us achieve efficient, accurate, and reliable project deployment and rollback. Deployer supports a variety of deployment methods, including directly copying files, using version control systems (such as Git), etc., and has the ability to automate tasks and task processes, as well as flexible scalability and customization.

Installation and configuration:
First, we need to install Deployer through Composer. Execute the following command in the terminal:

composer require deployer/deployer --dev

After the installation is completed, a deploy.php file will be generated in the project root directory as the Deployer configuration file. We need to configure it accordingly in this file.

The sample configuration content is as follows:

user('your_username')
    ->password('your_password')
    ->set('deploy_path', '/var/www/html/your_project_path'); // 部署目录

// 项目配置
set('repository', 'your_git_repository');
set('shared_files', ['.env']);
set('shared_dirs', ['storage']);
set('writable_dirs', ['bootstrap/cache']);
set('keep_releases', 5);

// 任务配置
task('build', function () {
    run('cd {{release_path}} && build-script');
});

after('deploy:failed', 'deploy:unlock');

// 自定义任务
task('reload:php-fpm', function () {
    run('sudo systemctl reload php-fpm');
});

// 定义自动化任务流程
before('deploy', 'build');
after('deploy', 'reload:php-fpm');

In the above configuration file, we need to replace the corresponding server address, user name, password, deployment directory, Git warehouse and other information to meet the needs of the actual project . Other options in the configuration file such as shared_files, shared_dirs, writable_dirs and keep_releases can be adjusted according to actual needs.

Deployment operation:
After completing the configuration, execute the following command in the terminal to deploy the project:

dep deploy

During the deployment process, Deployer will automatically pull the latest version of the Git repository Code, copy the code to the directory specified by the server, and perform a series of configured automation tasks. The whole process is very fast and reliable.

Rollback operation:
When a problem occurs in the project, we can perform rollback operation through Deployer to restore the project to the previous version. Execute the following command to implement rollback:

dep rollback

Deployer will automatically switch to the previous version of the code and perform corresponding automated tasks.

Summary:
By using Deployer, we can achieve seamless deployment and rollback operations of PHP projects, greatly improving the efficiency of project development and maintenance. Deployer provides flexible DSL syntax and powerful automated task functions to help us complete project deployment and rollback quickly and accurately. I hope this article can be helpful to everyone, thank you for reading!

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