Auto Scaling code examples for the SDK for PHP

Overview

Shows how to use the AWS SDK for PHP to work with Amazon EC2 Auto Scaling.

Auto Scaling automatically scales EC2 instances, either with scaling policies or with scheduled scaling.

⚠ Important

• Running this code might result in charges to your AWS account. For more details, see AWS Pricing and Free Tier.
• Running the tests might result in charges to your AWS account.
• We recommend that you grant your code least privilege. At most, grant only the minimum permissions required to perform the task. For more information, see Grant least privilege.
• This code is not tested in every AWS Region. For more information, see AWS Regional Services.

Code examples

Prerequisites

For prerequisites, see the README in the php folder.

• You must have an AWS account, and have your default credentials and AWS Region configured as described in the [AWS Tools and SDKs Shared Configuration and Credentials Reference Guide] (https://docs.aws.amazon.com/credref/latest/refdocs/creds-config-files.html).
• PHP 7.1 or later.
• Composer installed.

Get started

• Hello Auto Scaling (DescribeAutoScalingGroups)

Basics

Code examples that show you how to perform the essential operations within a service.

• Learn the basics

Single actions

Code excerpts that show you how to call individual service functions.

• CreateAutoScalingGroup
• DeleteAutoScalingGroup
• DescribeAutoScalingGroups
• DescribeAutoScalingInstances
• DescribeScalingActivities
• DisableMetricsCollection
• EnableMetricsCollection
• SetDesiredCapacity
• TerminateInstanceInAutoScalingGroup
• UpdateAutoScalingGroup

Run the examples

Instructions

From the aws-doc-sdk-examples/php/auto-scaling/ directory:

Install dependencies by using Composer:

composer install

After your Composer dependencies are installed, you can run the example with the following command:

php Runner.php

Hello Auto Scaling

This example shows you how to get started using Auto Scaling.

Learn the basics

This example shows you how to do the following:

• Create an Amazon EC2 Auto Scaling group with a launch template and Availability Zones, and get information about running instances.
• Enable Amazon CloudWatch metrics collection.
• Update the group's desired capacity and wait for an instance to start.
• Terminate an instance in the group.
• List scaling activities that occur in response to user requests and capacity changes.
• Get statistics for CloudWatch metrics, then clean up resources.

Tests

⚠ Running tests might result in charges to your AWS account.

To find instructions for running these tests, see the README in the php folder.

Install dependencies by using Composer:

composer install

Run the tests with the following command:

../vendor/bin/phpunit AutoScalingBasicsTests.php

Additional resources

• Auto Scaling User Guide
• Auto Scaling API Reference
• SDK for PHP Auto Scaling reference

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