Guide on linking a trust policy to an IAM role through CDK

{
    "Version": "2008-10-17",
    "Statement": [
        {
            "Sid": "",
            "Effect": "Allow",
            "Principal": {
                "AWS": [
                    "arn:aws:iam::1234:role/role1",
                    "arn:aws:iam::1235:role/role2",
                    "arn:aws:iam::1236:role/role3",
                    "arn:aws:iam::1237:role/role4"
                ]
            },
            "Action": "sts:AssumeRole"
        }
    ]
}

I attempted to implement the code using Arnprinciple, but it seems to only accept one role at a time. I need to associate multiple roles (all 4) simultaneously. Any assistance would be appreciated.

typescriptamazon-web-servicesamazon-iamaws-cdk

Answer №1

When utilizing the CDK to create an IAM role, you have the ability to define the assumedBy field, which determines the trust policy.

new iam.Role(this, 'DataPipelineJobRole', {
            roleName: pipelineJobRoleName,
            assumedBy: new CompositePrincipal(
                new iam.ServicePrincipal('datapipeline.amazonaws.com'),
                iam.Role.fromRoleName(this, "generated-pipeline-role", pipelineJobRoleName),
                ...
            ) ,
            inlinePolicies: {
...

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