PHP implements open source Portainer container manager

With the popularity of containerization technology, more and more applications are beginning to use Docker containers for deployment. Portainer, as a lightweight container manager, has also been widely recognized for its ease of use and portability. recognized. This article introduces how to use PHP to implement an open source Portainer container manager.

1. Introduction to Portainer

Portainer is an open source lightweight Docker container manager that can manage Docker containers, images, networks and data volumes through a simple web interface. Portainer supports a variety of Docker environments, including local Docker, remote Docker and Swarm clusters. The characteristic of Portainer is that it is simple to use and does not require any complicated operations, or even the need to use the command line for management. In addition, Portainer also supports multi-user and multi-team management, allowing users to easily manage multiple projects.

2. PHP implementation of Portainer

Portainer is written in Go language, but a similar function can also be implemented through PHP. In PHP, you can manage and operate Docker containers by using the Docker API. We can use the Guzzle PHP HTTP client to send HTTP requests to Docker Daemon and parse the response to implement port mapping, container management and other functions. First, you need to install Guzzle PHP in PHP. For the installation method, please refer to the Guzzle official website (https://docs.guzzlephp.org/en/stable/).

The following takes managing Docker containers as an example to introduce how to implement a simple PHP version of Portainer. First, you need to obtain an access token for the Docker API. The access token can be obtained through the following command:

$ TOKEN=$(curl -s "https://auth.docker.io/token?service=registry.docker.io&scope=repository:library/nginx:pull" | jq -r '.token')

After obtaining the access token, you can obtain the container list through the following code:

$client = new GuzzleHttpClient([
    'headers' => [
        'Authorization' => 'Bearer ' . $TOKEN,
    ],
]);
$response = $client->get('https://registry.hub.docker.com/v2/repositories/library/nginx/tags/');
$containers = json_decode($response->getBody(), true)['results'];

The above code accesses Docker Hub to obtain the tag list of the nginx image. The returned response includes the name, version number, size and other information of the container. Similarly, you can obtain port mapping, container logs and other information by accessing the status information of the container:

$response = $client->get('http://localhost:2375/containers/nginx/json');
$container_info = json_decode($response->getBody(), true);

After obtaining the container status information, you can perform operations on the container, such as starting, stopping, restarting, etc.:

$response = $client->post('http://localhost:2375/containers/nginx/start');
$response = $client->post('http://localhost:2375/containers/nginx/stop');
$response = $client->post('http://localhost:2375/containers/nginx/restart');

3. Summary

This article introduces how to use PHP to implement an open source Portainer container manager. Although PHP will have some performance losses compared to Go, using PHP to implement Portainer also has Some advantages, such as easy deployment and maintenance, easy secondary development, etc. Implementing Portainer through PHP allows more people to experience the convenience brought by containerization, and is committed to promoting the popularization and use of containerization technology.

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