Granting Temporary Access to Resources Using IAM Conditions

Introduction

In this guide, we will demonstrate how to grant temporary access to AWS resources using IAM Conditions with Pulumi. IAM Conditions allow you to define specific conditions under which a policy statement is in effect, providing fine-grained control over access to your resources.

Step-by-Step Explanation

Step 1: Define the IAM Policy

First, we will define an IAM policy that includes conditions. These conditions can be based on various factors such as time, IP address, or other request attributes.

Step 2: Create the IAM Role

Next, we will create an IAM role and attach the policy with conditions to this role. This role will be assumed by the entities that need temporary access.

Step 3: Assign the Role to Resources

Finally, we will assign the IAM role to the resources that require temporary access. This ensures that the access is controlled and limited based on the defined conditions.

Conclusion

By following these steps, you can grant temporary access to your AWS resources using IAM Conditions with Pulumi. This approach provides a secure and flexible way to manage access to your resources.

Full Code Example

import * as aws from "@pulumi/aws";

// Step 1: Define the IAM Policy with Conditions
const policy = new aws.iam.Policy("examplePolicy", {
    policy: JSON.stringify({
        Version: "2012-10-17",
        Statement: [
            {
                Effect: "Allow",
                Action: "s3:ListBucket",
                Resource: "arn:aws:s3:::example-bucket",
                Condition: {
                    DateGreaterThan: {"aws:CurrentTime": "2023-01-01T00:00:00Z"},
                    DateLessThan: {"aws:CurrentTime": "2023-12-31T23:59:59Z"}
                }
            }
        ]
    })
});

// Step 2: Create the IAM Role and Attach the Policy
const role = new aws.iam.Role("exampleRole", {
    assumeRolePolicy: JSON.stringify({
        Version: "2012-10-17",
        Statement: [
            {
                Effect: "Allow",
                Principal: {
                    Service: "ec2.amazonaws.com"
                },
                Action: "sts:AssumeRole"
            }
        ]
    })
});

const rolePolicyAttachment = new aws.iam.RolePolicyAttachment("exampleRolePolicyAttachment", {
    role: role.name,
    policyArn: policy.arn
});

// Step 3: Assign the Role to Resources
// In this example, we assume the role is used by an EC2 instance
const instanceProfile = new aws.iam.InstanceProfile("exampleInstanceProfile", {
    role: role.name
});

const ec2Instance = new aws.ec2.Instance("exampleInstance", {
    ami: "ami-0c55b159cbfafe1f0", // Example AMI ID
    instanceType: "t2.micro",
    iamInstanceProfile: instanceProfile.name
});