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Mock EC2 instance metadata endpoint on local systems for development purposes

mock-instance-profile provides a way to run ec2 instance profile on local linux or mac to simulate running on an ec2 instance. This provides a native capability to work with AWS SDKs

Read the blog post for a detailed walkthrough: aws instance profile for local development

Installation

Follow the installation guide for amazon-ec2-metadata-mock to install ec2-metadata-mock before using mock-instance-profile.

ensure you have python3 installed then install the python dependencies with pip3.

$ pip3 install -r requirements.txt

local metadata mock

To mock metadata you must have some credentials on your system that boto3 can read via the default credential chain.

run mock-instance-profile with the IAM role that you would like to assume credentials for.

$ ./mock-instance-profile arn:aws:iam::55555555555:role/my-test-role
Password:

Using configuration from file:  /Users/test-user/.aws/mock_config.json
2022/07/15 07:42:16 Initiating ec2-metadata-mock for all mocks on port 80

Flags:
config-file: /Users/test-user/.aws/mock_config.json
hostname: 169.254.169.254
port: 80