benagricola/eks-auth

Provides a pre-authenticated HTTPClient for consumption by existing PHP Kubernetes Client libraries

v0.0.3 2021-04-30 23:30 UTC

Requires

• php: >=7.3
• aws/aws-sdk-php: ^3.179
• guzzlehttp/psr7: ^1.8

Requires (Dev)

• overtrue/phplint: ^2.3

Suggests

• flow/jsonpath: ^0.5.0
• maclof/kubernetes-client: ^0.21.0

MIT

• Ben Agricola

• aws
• kubernetes
• eks
• aws-eks

README

This library uses the AWS V3 SDK to create an authenticated GuzzleHttp\Client instance that can be passed to your compatible PHP Kubernetes client (only tested with maclof/kubernetes-client).

All you need to authenticate with an EKS cluster is valid AWS credentials in your environment.

This library will pull the EKS endpoint details from AWS based on $clusterName and $region, using the default credential provider from aws-sdk-php.

The GuzzleHttp\Client instance will be preconfigured with a DynamicCertificate Middleware that writes the CA certificate of the cluster to a temporary file so it can be passed to the underlying HTTP Handler (usually Curl).

The temporary certificate file is created and deleted on every request so does not need to be cleaned up, and means connections are fully verified.

Usage

Require it:

composer require benagricola/eks-auth

Then use it in your project:

use EKSAuth\Client\Factory as ClientFactory;

# Example using maclof/kubernetes-client
use Maclof\Kubernetes\Client;

// Create a new ClientFactory.
// EKS Cluster details are cached for the
// lifetime of this Factory instance.
$cf = new ClientFactory();

// Get our client. A new Token will be generated every
// time getClient() is called.

// We pass our own function that instantiates a new 
// Maclof\Kubernetes\Client instance with the
// pre-configured \GuzzleHttp\Client.
$k8s = $cf->getClient($clusterName, $region, function($httpClient) {
    return new Client([], $httpClient);
});

$namespaces = $k8s->namespaces()->find();
...

Note: This library only catches and re-throws an error when the requested cluster does not exist. You should wrap the ClientFactory->getClient() call in a try{} catch(Exception $e){} block to avoid throwing all sorts of errors from the underlying libraries.

Contributing

Submit a pull request. I'm not a PHP dev so the codebase has no tests.