Automating AWS S3 Bucket Policies and Lifecycle Rules With Travis CI With Pulumi

Introduction

In this guide, we will automate the creation and management of AWS S3 bucket policies and lifecycle rules using Pulumi and Travis CI. Pulumi allows us to define infrastructure as code, and Travis CI enables continuous integration and deployment. By combining these tools, we can ensure that our S3 bucket configurations are consistently applied and version-controlled.

Step-by-Step Explanation

Prerequisites

1. Pulumi CLI: Ensure that you have the Pulumi CLI installed. You can download it from the Pulumi website.
2. AWS CLI: Install the AWS CLI to interact with AWS services. Instructions can be found here.
3. Travis CI Account: Set up a Travis CI account and link it to your GitHub repository.
4. Pulumi Project: Create a new Pulumi project if you don’t already have one. You can do this by running pulumi new aws-typescript.

Creating the S3 Bucket with Policies and Lifecycle Rules

1. Define the S3 Bucket: In your Pulumi project, define the S3 bucket in a TypeScript file (e.g., index.ts).
2. Add Bucket Policies: Define the bucket policies to control access to the bucket.
3. Add Lifecycle Rules: Define lifecycle rules to manage the objects in the bucket over time.

Example Code

Below is an example of how to define an S3 bucket with policies and lifecycle rules using Pulumi in TypeScript:

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

// Create an S3 bucket
const bucket = new aws.s3.Bucket("my-bucket", {
    acl: "private",
});

// Define bucket policy
const bucketPolicy = new aws.s3.BucketPolicy("bucketPolicy", {
    bucket: bucket.id,
    policy: pulumi.output(bucket.id).apply(id => JSON.stringify({
        Version: "2012-10-17",
        Statement: [{
            Action: ["s3:GetObject"],
            Effect: "Allow",
            Resource: [
                `arn:aws:s3:::${id}/*`
            ],
            Principal: "*",
        }],
    })),
});

// Define lifecycle rules
const lifecycleRules = new aws.s3.BucketLifecycleConfigurationV2("lifecycleRules", {
    bucket: bucket.id,
    rules: [{
        id: "log",
        enabled: true,
        expiration: {
            days: 30,
        },
        filter: {
            prefix: "log/",
        },
    }],
});

export const bucketName = bucket.id;

Integrating with Travis CI

1. Configure Travis CI: Add a .travis.yml file to your repository to configure Travis CI.
2. Install Dependencies: Ensure that Pulumi and AWS CLI are installed in the Travis CI environment.
3. Run Pulumi Commands: Use Travis CI to run Pulumi commands to preview and apply changes.

Example .travis.yml Configuration

language: node_js
node_js:
  - "14"

install:
  - npm install -g pulumi
  - npm install

script:
  - pulumi preview
  - pulumi up --yes

Summary

By following this guide, you can automate the creation and management of AWS S3 bucket policies and lifecycle rules using Pulumi and Travis CI. This approach ensures that your infrastructure is consistently defined and managed through code, providing better version control and automation.

For more information, refer to the Pulumi documentation, AWS S3 documentation, and Travis CI documentation.

Full Code Example

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

// Create an S3 bucket
const bucket = new aws.s3.Bucket("my-bucket", {
    acl: "private",
});

// Define bucket policy
const bucketPolicy = new aws.s3.BucketPolicy("bucketPolicy", {
    bucket: bucket.id,
    policy: pulumi.output(bucket.id).apply(id => JSON.stringify({
        Version: "2012-10-17",
        Statement: [{
            Action: ["s3:GetObject"],
            Effect: "Allow",
            Resource: [
                \`arn:aws:s3:::\${id}/*\`
            ],
            Principal: "*",
        }],
    })),
});

// Define lifecycle rules
const lifecycleRules = new aws.s3.BucketLifecycleConfigurationV2("lifecycleRules", {
    bucket: bucket.id,
    rules: [{
        id: "log",
        status: "Enabled",
        expiration: {
            days: 30,
        },
        filter: {
            prefix: "log/",
        },
    }],
});

export const bucketName = bucket.id;