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  5. Make an update

Get started with Pulumi and AWS

Make an update

Now you will update your project to serve a static website out of your AWS S3 bucket. You will change your code and then re-run pulumi up which will update your infrastructure.

Add new resources

Pulumi knows how to evolve your current infrastructure to your project’s new desired state, both for the first deployment as well as subseuqent updates.

To turn your bucket into a static website, start by adding three new AWS S3 resources:

  1. BucketWebsiteConfigurationV2: configures your bucket as a website
  2. BucketOwnershipControls: allows bucket access controls to be configured
  3. BucketPublicAccessBlock: permits public access to your bucket; this is disabled by default so you don’t allow access over the Internet by accident

Open up

index.js
index.ts
__main__.py
main.go
Program.cs
Program.fs
Program.vb
App.java
Pulumi.yaml
in your editor and add them right after your S3 bucket:

// Bucket...

// Turn the bucket into a website:
const website = new aws.s3.BucketWebsiteConfigurationV2("website", {
    bucket: bucket.id,
    indexDocument: {
        suffix: "index.html",
    },
});

// Permit access control configuration:
const ownershipControls = new aws.s3.BucketOwnershipControls("ownership-controls", {
    bucket: bucket.id,
    rule: {
        objectOwnership: "ObjectWriter"
    }
});

// Enable public access to the website:
const publicAccessBlock = new aws.s3.BucketPublicAccessBlock("public-access-block", {
    bucket: bucket.id,
    blockPublicAcls: false,
});
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# Bucket ...

# Turn the bucket into a website:
website = s3.BucketWebsiteConfigurationV2("website",
    bucket=bucket.id,
    index_document={
        "suffix": "index.html",
    })

# Permit access control configuration:
ownership_controls = s3.BucketOwnershipControls(
    'ownership-controls',
    bucket=bucket.id,
    rule={
        "object_ownership": 'ObjectWriter',
    },
)

# Enable public access to the website:
public_access_block = s3.BucketPublicAccessBlock(
    'public-access-block', bucket=bucket.id, block_public_acls=False
)
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// Bucket ...

// Turn the bucket into a website:
website, err := s3.NewBucketWebsiteConfigurationV2(ctx, "website", &s3.BucketWebsiteConfigurationV2Args{
    Bucket: bucket.ID(),
    IndexDocument: &s3.BucketWebsiteConfigurationV2IndexDocumentArgs{
        Suffix: pulumi.String("index.html"),
    },
})
if err != nil {
    return err
}

// Permit access control configuration:
ownershipControls, err := s3.NewBucketOwnershipControls(ctx, "ownership-controls", &s3.BucketOwnershipControlsArgs{
    Bucket: bucket.ID(),
    Rule: &s3.BucketOwnershipControlsRuleArgs{
        ObjectOwnership: pulumi.String("ObjectWriter"),
    },
})
if err != nil {
    return err
}

// Enable public access to the website:
publicAccessBlock, err := s3.NewBucketPublicAccessBlock(ctx, "public-access-block", &s3.BucketPublicAccessBlockArgs{
    Bucket:          bucket.ID(),
    BlockPublicAcls: pulumi.Bool(false),
})
if err != nil {
    return err
}
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// Bucket ...

// Turn the bucket into a website:
var website = new BucketWebsiteConfigurationV2("website", new()
{
    Bucket = bucket.Id,
    IndexDocument = new BucketWebsiteConfigurationV2IndexDocumentArgs
    {
        Suffix = "index.html",
    },
});

// Permit access control configuration:
var ownershipControls = new BucketOwnershipControls("ownership-controls", new()
{
    Bucket = bucket.Id,
    Rule = new BucketOwnershipControlsRuleArgs
    {
        ObjectOwnership = "ObjectWriter",
    },
});

// Enable public access to the website:
var publicAccessBlock = new BucketPublicAccessBlock("public-access-block", new()
{
    Bucket = bucket.Id,
    BlockPublicAcls = false,
});
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Also make sure you’ve imported the additional types being used at the top of the file:

using Pulumi.Aws.S3.Inputs;
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// Bucket ...

// Turn the bucket into a website:
var website = new BucketWebsiteConfigurationV2("website", BucketWebsiteConfigurationV2Args.builder()
    .bucket(bucket.id())
    .indexDocument(BucketWebsiteConfigurationV2IndexDocumentArgs.builder()
        .suffix("index.html")
        .build())
    .build());

// Permit access control configuration:
var ownershipControls = new BucketOwnershipControls("ownershipControls", BucketOwnershipControlsArgs.builder()
    .bucket(bucket.id())
    .rule(BucketOwnershipControlsRuleArgs.builder()
        .objectOwnership("ObjectWriter")
        .build())
    .build());

// Enable public access to the website:
var publicAccessBlock = new BucketPublicAccessBlock("publicAccessBlock", BucketPublicAccessBlockArgs.builder()
    .bucket(bucket.id())
    .blockPublicAcls(false)
    .build());
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Also replace the imports at the top with this so you have access to all the new types:

import com.pulumi.*;
import com.pulumi.core.*;
import com.pulumi.asset.FileAsset;
import com.pulumi.resources.*;

import com.pulumi.aws.s3.*;
import com.pulumi.aws.s3.inputs.*;

import java.util.Map;
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# ...
resources:
  # Bucket ...

  # Turn the bucket into a website:
  website:
    type: aws:s3:BucketWebsiteConfigurationV2
    properties:
      bucket: ${my-bucket.id}
      indexDocument:
        suffix: index.html

  # Permit access control configuration:
  ownership-controls:
    type: aws:s3:BucketOwnershipControls
    properties:
      bucket: ${my-bucket.id}
      rule:
        objectOwnership: ObjectWriter

  # Enable public access to the website:
  public-access-block:
    type: aws:s3:BucketPublicAccessBlock
    properties:
      bucket: ${my-bucket.id}
      blockPublicAcls: false
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Notice that resources can reference each other, which forms automatic dependencies between them. Pulumi uses this information to parallelize deployments safely.

Add an index.html

Next, add a new file called index.html to your current directory with these contents:

<html>
    <body>
        <h1>Hello, Pulumi!</h1>
    </body>
</html>
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Then open

index.js
index.ts
__main__.py
main.go
Program.cs
Program.fs
Program.vb
App.java
Pulumi.yaml
and create a BucketObject after the three other new resources:

// Other resources ...

// Create an S3 Bucket object
const bucketObject = new aws.s3.BucketObject("index.html", {
    bucket: bucket.id,
    source: new pulumi.asset.FileAsset("index.html"),
    contentType: "text/html",
    acl: "public-read",
}, { dependsOn: [ownershipControls, publicAccessBlock] });
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# Other resources ...

# Create an S3 Bucket object
bucket_object = s3.BucketObject(
    'index.html',
    bucket=bucket.id,
    source=pulumi.FileAsset('index.html'),
    content_type='text/html',
    acl='public-read',
    opts=pulumi.ResourceOptions(depends_on=[ownership_controls, public_access_block]),
)
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Create a new BucketObject right after creating the bucket itself:

// Other resources ...

// Create an S3 Bucket object
_, err = s3.NewBucketObject(ctx, "index.html", &s3.BucketObjectArgs{
    Bucket:      bucket.ID(),
    Source:      pulumi.NewFileAsset("index.html"),
    ContentType: pulumi.String("text/html"),
    Acl:         pulumi.String("public-read"),
}, pulumi.DependsOn([]pulumi.Resource{ownershipControls,publicAccessBlock}))
if err != nil {
    return err
}
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Create a new BucketObject right after creating the bucket itself:

// Other resources ...

// Create an S3 Bucket object
var bucketObject = new BucketObject("index.html", new()
{
    Bucket = bucket.Id,
    Source = new FileAsset("index.html"),
    ContentType = "text/html",
    Acl = "public-read",
}, new CustomResourceOptions
{
    DependsOn = new Resource[]
    {
        ownershipControls,
        publicAccessBlock,
    },
});
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// Other resources ...

// Create an S3 Bucket object
var bucketObject = new BucketObject("index.html", BucketObjectArgs.builder()
    .bucket(bucket.id())
    .source(new FileAsset("index.html"))
    .contentType("text/html")
    .acl("public-read")
    .build(), CustomResourceOptions.builder()
        .dependsOn(
            ownershipControls,
            publicAccessBlock)
        .build());
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# ...
resources:
  # Other resources ...

  # Create an S3 Bucket object
  index.html:
    type: aws:s3:BucketObject
    properties:
      bucket: ${my-bucket.id}
      source:
        fn::fileAsset: index.html
      contentType: text/html
      acl: public-read
    options:
      dependsOn:
        - ${ownership-controls}
        - ${public-access-block}
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This uploads the index.html file to your bucket using a Pulumi concept called an asset.

The bucket object also declares that it dependsOn the other resources. That is because those other resources need to be created first so that AWS permits the object’s public-acl grant. Pulumi usually tracks dependencies automatically but these ones are invisible to Pulumi because those specific resources cause side-effects within AWS.

Export the website URL

Now to export the website’s URL for easy access add this to the end of your program:

// Export the bucket's autoassigned URL:
exports.url = pulumi.interpolate`http://${website.websiteEndpoint}`;
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// Export the bucket's autoassigned URL:
export const url = pulumi.interpolate`http://${website.websiteEndpoint}`;
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# Export the bucket's autoassigned URL:
pulumi.export('url', pulumi.Output.concat('http://', website.website_endpoint))
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// Export the bucket's autoassigned URL:
ctx.Export("url", website.WebsiteEndpoint.ApplyT(func(websiteEndpoint string) (string, error) {
    return fmt.Sprintf("http://%v", websiteEndpoint), nil
}).(pulumi.StringOutput))
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// Export the bucket's autoassigned URL:
return new Dictionary<string, object?>
{
    // ...
    ["url"] = website.WebsiteEndpoint.Apply(websiteEndpoint => $"http://{websiteEndpoint}"),
};
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// Export the bucket's autoassigned URL:
ctx.export("url", website.websiteEndpoint().applyValue(
    websiteEndpoint -> String.format("http://%s", websiteEndpoint)));
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# ...
outputs:
  # ...
  url: http://${website.websiteEndpoint}
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We prepend http:// using a helper because websiteEndpoint is an output property that AWS assigns at deployment time, not a raw string, meaning its value isn’t known in advance.

Deploy the changes

To deploy the changes, run pulumi up again and it will figure out the deltas:

$ pulumi up
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> pulumi up
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Just like the first time you will see a preview of the changes before they happen:

Previewing update (dev):

     Type                                    Name                 Plan       Info
     pulumi:pulumi:Stack                     quickstart-dev
 +   ├─ aws:s3:BucketWebsiteConfigurationV2  website              create
 +   ├─ aws:s3:BucketOwnershipControls       ownership-controls   create
 +   ├─ aws:s3:BucketPublicAccessBlock       public-access-block  create
 +   └─ aws:s3:BucketObject                  index.html           create

Outputs:
  + url: output<string>

Resources:
    + 4 to create
    4 changes. 1 unchanged

Do you want to perform this update?
> yes
  no
  details

Choose yes to perform the deployment:

Do you want to perform this update? yes
Updating (dev):

     Type                                    Name                 Status              Info
     pulumi:pulumi:Stack.                    quickstart-dev
 +   ├─ aws:s3:BucketWebsiteConfigurationV2  website              created (0.51s)
 +   ├─ aws:s3:BucketOwnershipControls.      ownership-controls   created (0.84s)
 +   ├─ aws:s3:BucketPublicAccessBlock       public-access-block  created (1s)
 +   └─ aws:s3:BucketObject                  index.html           created (0.53s)

Outputs:
  + url: "http://my-bucket-dfd6bd0.s3-website-us-east-1.amazonaws.com"
    bucketName    : "my-bucket-dfd6bd0"

Resources:
    + 4 created
    4 changes. 1 unchanged

Duration: 8s

In just a few seconds, your new website will be ready. Curl the endpoint to see it live:

$ curl $(pulumi stack output url)
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> curl (pulumi stack output url)
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This will reveal your new website!

<html>
    <body>
        <h1>Hello, Pulumi!</h1>
    </body>
</html>

Feel free to experiment, such as changing the contents of index.html and redeploying.

Next, let’s wrap this website up into an infrastructure abstraction.

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