When building using for example Bitbucket Pipelines you might find yourself in a situation where you want to deploy to multiple AWS accounts. This package allows you to easily switch to an AWS role in a different account.

npm install @enfo/aws-assume --save-dev

Let us say you have two accounts: A and B. In your build pipelines you have AWS keys configured for deployments to account A. If you want to deploy to B you need to setup a role that the deploying account A role can assume. Then you can set it up as follows:

{
  "scripts": {
    "assume:test": "npx @enfo/aws-assume ACCOUNT_B_ARN_HERE"
  }
  ...
}

The package will print variables on the format "export AWS_ACCESS_KEY_ID=ASIA..." so in your build pipelines you have to run eval on the output. The silent flag suppresses npm script output which would otherwise ruin the command.

eval $(npm run assume:test --silent)

It takes two parameters - role ARN and session duration.

• The role ARN is mandatory and if one is not supplied an error will be thrown
• The duration is in seconds and optional, the default value is 900 seconds (15 minutes). Example:

npx @enfo/aws-assume arn:aws:iam::111122223333:role/Some-Fancy-Role 1800