Manage GCP Dataplex Asset IAM Policies

The gcp:dataplex/assetIamPolicy:AssetIamPolicy resource, part of the Pulumi GCP provider, manages IAM permissions for Dataplex assets using three distinct approaches: authoritative policy replacement (AssetIamPolicy), role-level binding (AssetIamBinding), and incremental member addition (AssetIamMember). This guide focuses on three capabilities: replacing entire policies, binding roles to member lists, and adding individual members.

All three resources reference existing Dataplex assets via project, location, lake, dataplexZone, and asset identifiers. The examples are intentionally small. Combine them with your own Dataplex infrastructure and IAM policies.

Replace the entire IAM policy for an asset

When you need complete control over asset access, you can set the entire IAM policy at once, replacing any existing permissions.

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

const admin = gcp.organizations.getIAMPolicy({
    bindings: [{
        role: "roles/viewer",
        members: ["user:jane@example.com"],
    }],
});
const policy = new gcp.dataplex.AssetIamPolicy("policy", {
    project: example.project,
    location: example.location,
    lake: example.lake,
    dataplexZone: example.dataplexZone,
    asset: example.name,
    policyData: admin.then(admin => admin.policyData),
});

import pulumi
import pulumi_gcp as gcp

admin = gcp.organizations.get_iam_policy(bindings=[{
    "role": "roles/viewer",
    "members": ["user:jane@example.com"],
}])
policy = gcp.dataplex.AssetIamPolicy("policy",
    project=example["project"],
    location=example["location"],
    lake=example["lake"],
    dataplex_zone=example["dataplexZone"],
    asset=example["name"],
    policy_data=admin.policy_data)

package main

import (
	"github.com/pulumi/pulumi-gcp/sdk/v9/go/gcp/dataplex"
	"github.com/pulumi/pulumi-gcp/sdk/v9/go/gcp/organizations"
	"github.com/pulumi/pulumi/sdk/v3/go/pulumi"
)

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		admin, err := organizations.LookupIAMPolicy(ctx, &organizations.LookupIAMPolicyArgs{
			Bindings: []organizations.GetIAMPolicyBinding{
				{
					Role: "roles/viewer",
					Members: []string{
						"user:jane@example.com",
					},
				},
			},
		}, nil)
		if err != nil {
			return err
		}
		_, err = dataplex.NewAssetIamPolicy(ctx, "policy", &dataplex.AssetIamPolicyArgs{
			Project:      pulumi.Any(example.Project),
			Location:     pulumi.Any(example.Location),
			Lake:         pulumi.Any(example.Lake),
			DataplexZone: pulumi.Any(example.DataplexZone),
			Asset:        pulumi.Any(example.Name),
			PolicyData:   pulumi.String(admin.PolicyData),
		})
		if err != nil {
			return err
		}
		return nil
	})
}

using System.Collections.Generic;
using System.Linq;
using Pulumi;
using Gcp = Pulumi.Gcp;

return await Deployment.RunAsync(() => 
{
    var admin = Gcp.Organizations.GetIAMPolicy.Invoke(new()
    {
        Bindings = new[]
        {
            new Gcp.Organizations.Inputs.GetIAMPolicyBindingInputArgs
            {
                Role = "roles/viewer",
                Members = new[]
                {
                    "user:jane@example.com",
                },
            },
        },
    });

    var policy = new Gcp.DataPlex.AssetIamPolicy("policy", new()
    {
        Project = example.Project,
        Location = example.Location,
        Lake = example.Lake,
        DataplexZone = example.DataplexZone,
        Asset = example.Name,
        PolicyData = admin.Apply(getIAMPolicyResult => getIAMPolicyResult.PolicyData),
    });

});

package generated_program;

import com.pulumi.Context;
import com.pulumi.Pulumi;
import com.pulumi.core.Output;
import com.pulumi.gcp.organizations.OrganizationsFunctions;
import com.pulumi.gcp.organizations.inputs.GetIAMPolicyArgs;
import com.pulumi.gcp.dataplex.AssetIamPolicy;
import com.pulumi.gcp.dataplex.AssetIamPolicyArgs;
import java.util.List;
import java.util.ArrayList;
import java.util.Map;
import java.io.File;
import java.nio.file.Files;
import java.nio.file.Paths;

public class App {
    public static void main(String[] args) {
        Pulumi.run(App::stack);
    }

    public static void stack(Context ctx) {
        final var admin = OrganizationsFunctions.getIAMPolicy(GetIAMPolicyArgs.builder()
            .bindings(GetIAMPolicyBindingArgs.builder()
                .role("roles/viewer")
                .members("user:jane@example.com")
                .build())
            .build());

        var policy = new AssetIamPolicy("policy", AssetIamPolicyArgs.builder()
            .project(example.project())
            .location(example.location())
            .lake(example.lake())
            .dataplexZone(example.dataplexZone())
            .asset(example.name())
            .policyData(admin.policyData())
            .build());

    }
}

resources:
  policy:
    type: gcp:dataplex:AssetIamPolicy
    properties:
      project: ${example.project}
      location: ${example.location}
      lake: ${example.lake}
      dataplexZone: ${example.dataplexZone}
      asset: ${example.name}
      policyData: ${admin.policyData}
variables:
  admin:
    fn::invoke:
      function: gcp:organizations:getIAMPolicy
      arguments:
        bindings:
          - role: roles/viewer
            members:
              - user:jane@example.com

AssetIamPolicy is authoritative: it replaces the entire IAM policy with the one you provide. The policyData property accepts output from getIAMPolicy, which defines bindings (role-to-members mappings). This approach gives you full control but conflicts with AssetIamBinding and AssetIamMember resources on the same asset.

Grant a role to multiple members at once

Teams often need to grant the same role to several users or service accounts without affecting other role assignments.

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

const binding = new gcp.dataplex.AssetIamBinding("binding", {
    project: example.project,
    location: example.location,
    lake: example.lake,
    dataplexZone: example.dataplexZone,
    asset: example.name,
    role: "roles/viewer",
    members: ["user:jane@example.com"],
});

import pulumi
import pulumi_gcp as gcp

binding = gcp.dataplex.AssetIamBinding("binding",
    project=example["project"],
    location=example["location"],
    lake=example["lake"],
    dataplex_zone=example["dataplexZone"],
    asset=example["name"],
    role="roles/viewer",
    members=["user:jane@example.com"])

package main

import (
	"github.com/pulumi/pulumi-gcp/sdk/v9/go/gcp/dataplex"
	"github.com/pulumi/pulumi/sdk/v3/go/pulumi"
)

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		_, err := dataplex.NewAssetIamBinding(ctx, "binding", &dataplex.AssetIamBindingArgs{
			Project:      pulumi.Any(example.Project),
			Location:     pulumi.Any(example.Location),
			Lake:         pulumi.Any(example.Lake),
			DataplexZone: pulumi.Any(example.DataplexZone),
			Asset:        pulumi.Any(example.Name),
			Role:         pulumi.String("roles/viewer"),
			Members: pulumi.StringArray{
				pulumi.String("user:jane@example.com"),
			},
		})
		if err != nil {
			return err
		}
		return nil
	})
}

using System.Collections.Generic;
using System.Linq;
using Pulumi;
using Gcp = Pulumi.Gcp;

return await Deployment.RunAsync(() => 
{
    var binding = new Gcp.DataPlex.AssetIamBinding("binding", new()
    {
        Project = example.Project,
        Location = example.Location,
        Lake = example.Lake,
        DataplexZone = example.DataplexZone,
        Asset = example.Name,
        Role = "roles/viewer",
        Members = new[]
        {
            "user:jane@example.com",
        },
    });

});

package generated_program;

import com.pulumi.Context;
import com.pulumi.Pulumi;
import com.pulumi.core.Output;
import com.pulumi.gcp.dataplex.AssetIamBinding;
import com.pulumi.gcp.dataplex.AssetIamBindingArgs;
import java.util.List;
import java.util.ArrayList;
import java.util.Map;
import java.io.File;
import java.nio.file.Files;
import java.nio.file.Paths;

public class App {
    public static void main(String[] args) {
        Pulumi.run(App::stack);
    }

    public static void stack(Context ctx) {
        var binding = new AssetIamBinding("binding", AssetIamBindingArgs.builder()
            .project(example.project())
            .location(example.location())
            .lake(example.lake())
            .dataplexZone(example.dataplexZone())
            .asset(example.name())
            .role("roles/viewer")
            .members("user:jane@example.com")
            .build());

    }
}

resources:
  binding:
    type: gcp:dataplex:AssetIamBinding
    properties:
      project: ${example.project}
      location: ${example.location}
      lake: ${example.lake}
      dataplexZone: ${example.dataplexZone}
      asset: ${example.name}
      role: roles/viewer
      members:
        - user:jane@example.com

AssetIamBinding is authoritative for a single role: it sets the complete member list for that role while preserving other roles on the asset. The members property accepts an array of identities (users, service accounts, groups). You can use multiple AssetIamBinding resources on the same asset as long as they target different roles.

Add a single member to a role incrementally

When you need to grant access to one user without disturbing existing members of that role, use a non-authoritative member resource.

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

const member = new gcp.dataplex.AssetIamMember("member", {
    project: example.project,
    location: example.location,
    lake: example.lake,
    dataplexZone: example.dataplexZone,
    asset: example.name,
    role: "roles/viewer",
    member: "user:jane@example.com",
});

import pulumi
import pulumi_gcp as gcp

member = gcp.dataplex.AssetIamMember("member",
    project=example["project"],
    location=example["location"],
    lake=example["lake"],
    dataplex_zone=example["dataplexZone"],
    asset=example["name"],
    role="roles/viewer",
    member="user:jane@example.com")

package main

import (
	"github.com/pulumi/pulumi-gcp/sdk/v9/go/gcp/dataplex"
	"github.com/pulumi/pulumi/sdk/v3/go/pulumi"
)

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		_, err := dataplex.NewAssetIamMember(ctx, "member", &dataplex.AssetIamMemberArgs{
			Project:      pulumi.Any(example.Project),
			Location:     pulumi.Any(example.Location),
			Lake:         pulumi.Any(example.Lake),
			DataplexZone: pulumi.Any(example.DataplexZone),
			Asset:        pulumi.Any(example.Name),
			Role:         pulumi.String("roles/viewer"),
			Member:       pulumi.String("user:jane@example.com"),
		})
		if err != nil {
			return err
		}
		return nil
	})
}

using System.Collections.Generic;
using System.Linq;
using Pulumi;
using Gcp = Pulumi.Gcp;

return await Deployment.RunAsync(() => 
{
    var member = new Gcp.DataPlex.AssetIamMember("member", new()
    {
        Project = example.Project,
        Location = example.Location,
        Lake = example.Lake,
        DataplexZone = example.DataplexZone,
        Asset = example.Name,
        Role = "roles/viewer",
        Member = "user:jane@example.com",
    });

});

package generated_program;

import com.pulumi.Context;
import com.pulumi.Pulumi;
import com.pulumi.core.Output;
import com.pulumi.gcp.dataplex.AssetIamMember;
import com.pulumi.gcp.dataplex.AssetIamMemberArgs;
import java.util.List;
import java.util.ArrayList;
import java.util.Map;
import java.io.File;
import java.nio.file.Files;
import java.nio.file.Paths;

public class App {
    public static void main(String[] args) {
        Pulumi.run(App::stack);
    }

    public static void stack(Context ctx) {
        var member = new AssetIamMember("member", AssetIamMemberArgs.builder()
            .project(example.project())
            .location(example.location())
            .lake(example.lake())
            .dataplexZone(example.dataplexZone())
            .asset(example.name())
            .role("roles/viewer")
            .member("user:jane@example.com")
            .build());

    }
}

resources:
  member:
    type: gcp:dataplex:AssetIamMember
    properties:
      project: ${example.project}
      location: ${example.location}
      lake: ${example.lake}
      dataplexZone: ${example.dataplexZone}
      asset: ${example.name}
      role: roles/viewer
      member: user:jane@example.com

AssetIamMember is non-authoritative: it adds one member to a role without affecting other members. The member property accepts a single identity. This resource is safe to use alongside AssetIamBinding resources that target different roles, making it useful for incremental access grants.

Beyond these examples

These snippets focus on specific IAM management features: authoritative vs non-authoritative IAM management, and policy-level, role-level, and member-level access control. They’re intentionally minimal rather than full access control configurations.

The examples reference pre-existing infrastructure such as Dataplex assets (via project, location, lake, dataplexZone, asset identifiers). They focus on configuring IAM permissions rather than provisioning the underlying Dataplex resources.

To keep things focused, common IAM patterns are omitted, including:

Conditional IAM bindings (condition blocks)
Custom role definitions
Service account creation and management
Audit logging configuration

These omissions are intentional: the goal is to illustrate how each IAM resource type is wired, not provide drop-in access control modules. See the Dataplex AssetIamPolicy resource reference for all available configuration options.

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Frequently Asked Questions

Resource Selection & Conflicts

What's the difference between AssetIamPolicy, AssetIamBinding, and AssetIamMember?

AssetIamPolicy is authoritative and replaces the entire IAM policy. AssetIamBinding is authoritative for a specific role, preserving other roles. AssetIamMember is non-authoritative, adding a single member while preserving other members for that role.

Can I use AssetIamPolicy with AssetIamBinding or AssetIamMember?

No, AssetIamPolicy cannot be used alongside AssetIamBinding or AssetIamMember because they will conflict over the policy. Choose either AssetIamPolicy alone, or use AssetIamBinding/AssetIamMember together.

Can I use AssetIamBinding and AssetIamMember together?

Yes, but only if they don’t grant privileges to the same role. Using both for the same role will cause conflicts.

Configuration & Setup

How do I generate the policyData for AssetIamPolicy?

Use the gcp.organizations.getIAMPolicy data source with your desired bindings, then pass its policyData output to the AssetIamPolicy resource.

What properties are required to identify a Dataplex Asset?

You need asset, dataplexZone, lake, location, and project. All are immutable after creation.

Import & Operations

What import formats are supported for AssetIamPolicy?

You can import using the full path (projects/{{project}}/locations/{{location}}/lakes/{{lake}}/zones/{{dataplex_zone}}/assets/{{name}}), partial paths, or just {{name}}. Any variables not provided are taken from the provider configuration.

How do I import a custom role?

Use the full name of the custom role in the format [projects/my-project|organizations/my-org]/roles/my-custom-role.

Using a different cloud?

Explore security guides for other cloud providers:

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