Manage GCP Dataplex Datascan IAM Access

The gcp:dataplex/datascanIamMember:DatascanIamMember resource, part of the Pulumi GCP provider, manages IAM permissions for Dataplex datascans by adding individual members to roles without affecting other permissions. This guide focuses on three approaches: single-member role grants (DatascanIamMember), multi-member role management (DatascanIamBinding), and complete policy replacement (DatascanIamPolicy).

All three resources reference existing datascans and require project and location identifiers. The examples are intentionally small. Combine them with your own datascan resources and organizational IAM structure.

Grant a single user access to a datascan

Most IAM configurations add individual users or service accounts to specific roles without disrupting existing permissions.

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

const member = new gcp.dataplex.DatascanIamMember("member", {
    project: basicProfile.project,
    location: basicProfile.location,
    dataScanId: basicProfile.dataScanId,
    role: "roles/viewer",
    member: "user:jane@example.com",
});

import pulumi
import pulumi_gcp as gcp

member = gcp.dataplex.DatascanIamMember("member",
    project=basic_profile["project"],
    location=basic_profile["location"],
    data_scan_id=basic_profile["dataScanId"],
    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.NewDatascanIamMember(ctx, "member", &dataplex.DatascanIamMemberArgs{
			Project:    pulumi.Any(basicProfile.Project),
			Location:   pulumi.Any(basicProfile.Location),
			DataScanId: pulumi.Any(basicProfile.DataScanId),
			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.DatascanIamMember("member", new()
    {
        Project = basicProfile.Project,
        Location = basicProfile.Location,
        DataScanId = basicProfile.DataScanId,
        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.DatascanIamMember;
import com.pulumi.gcp.dataplex.DatascanIamMemberArgs;
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 DatascanIamMember("member", DatascanIamMemberArgs.builder()
            .project(basicProfile.project())
            .location(basicProfile.location())
            .dataScanId(basicProfile.dataScanId())
            .role("roles/viewer")
            .member("user:jane@example.com")
            .build());

    }
}

resources:
  member:
    type: gcp:dataplex:DatascanIamMember
    properties:
      project: ${basicProfile.project}
      location: ${basicProfile.location}
      dataScanId: ${basicProfile.dataScanId}
      role: roles/viewer
      member: user:jane@example.com

The member property specifies who receives access using formats like “user:jane@example.com” or “serviceAccount:app@project.iam.gserviceaccount.com”. The role property defines what they can do. DatascanIamMember is non-authoritative: it adds this one member to this one role, preserving all other members and roles on the datascan.

Grant a role to multiple members at once

When several users need identical access, DatascanIamBinding manages the complete member list for a single role.

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

const binding = new gcp.dataplex.DatascanIamBinding("binding", {
    project: basicProfile.project,
    location: basicProfile.location,
    dataScanId: basicProfile.dataScanId,
    role: "roles/viewer",
    members: ["user:jane@example.com"],
});

import pulumi
import pulumi_gcp as gcp

binding = gcp.dataplex.DatascanIamBinding("binding",
    project=basic_profile["project"],
    location=basic_profile["location"],
    data_scan_id=basic_profile["dataScanId"],
    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.NewDatascanIamBinding(ctx, "binding", &dataplex.DatascanIamBindingArgs{
			Project:    pulumi.Any(basicProfile.Project),
			Location:   pulumi.Any(basicProfile.Location),
			DataScanId: pulumi.Any(basicProfile.DataScanId),
			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.DatascanIamBinding("binding", new()
    {
        Project = basicProfile.Project,
        Location = basicProfile.Location,
        DataScanId = basicProfile.DataScanId,
        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.DatascanIamBinding;
import com.pulumi.gcp.dataplex.DatascanIamBindingArgs;
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 DatascanIamBinding("binding", DatascanIamBindingArgs.builder()
            .project(basicProfile.project())
            .location(basicProfile.location())
            .dataScanId(basicProfile.dataScanId())
            .role("roles/viewer")
            .members("user:jane@example.com")
            .build());

    }
}

resources:
  binding:
    type: gcp:dataplex:DatascanIamBinding
    properties:
      project: ${basicProfile.project}
      location: ${basicProfile.location}
      dataScanId: ${basicProfile.dataScanId}
      role: roles/viewer
      members:
        - user:jane@example.com

The members property lists all identities that should have this role. DatascanIamBinding is authoritative for the specified role: it replaces any existing members for that role but leaves other roles untouched. This differs from DatascanIamMember, which adds members without removing others.

Replace the entire IAM policy with a new definition

Some workflows require complete control over all roles and members, replacing any existing policy.

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.DatascanIamPolicy("policy", {
    project: basicProfile.project,
    location: basicProfile.location,
    dataScanId: basicProfile.dataScanId,
    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.DatascanIamPolicy("policy",
    project=basic_profile["project"],
    location=basic_profile["location"],
    data_scan_id=basic_profile["dataScanId"],
    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.NewDatascanIamPolicy(ctx, "policy", &dataplex.DatascanIamPolicyArgs{
			Project:    pulumi.Any(basicProfile.Project),
			Location:   pulumi.Any(basicProfile.Location),
			DataScanId: pulumi.Any(basicProfile.DataScanId),
			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.DatascanIamPolicy("policy", new()
    {
        Project = basicProfile.Project,
        Location = basicProfile.Location,
        DataScanId = basicProfile.DataScanId,
        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.DatascanIamPolicy;
import com.pulumi.gcp.dataplex.DatascanIamPolicyArgs;
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 DatascanIamPolicy("policy", DatascanIamPolicyArgs.builder()
            .project(basicProfile.project())
            .location(basicProfile.location())
            .dataScanId(basicProfile.dataScanId())
            .policyData(admin.policyData())
            .build());

    }
}

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

The policyData property accepts a complete IAM policy document, typically constructed using the getIAMPolicy data source. DatascanIamPolicy is fully authoritative: it removes any roles or members not defined in the policy. This resource conflicts with DatascanIamBinding and DatascanIamMember; using them together causes Pulumi to fight over the policy state.

Beyond these examples

These snippets focus on specific IAM management approaches: single-member grants (DatascanIamMember), role-level member lists (DatascanIamBinding), and complete policy replacement (DatascanIamPolicy). They’re intentionally minimal rather than full access control configurations.

The examples reference pre-existing infrastructure such as Dataplex datascans (by dataScanId) and GCP projects and locations. They focus on IAM permission assignment rather than datascan provisioning.

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

Conditional IAM bindings (condition property)
Custom role definitions
Service account creation and management
Datascan resource provisioning

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 Datascan IAM Member resource reference for all available configuration options.

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Frequently Asked Questions

Resource Selection & Conflicts

What's the difference between DatascanIamPolicy, DatascanIamBinding, and DatascanIamMember?

DatascanIamPolicy is authoritative and replaces the entire IAM policy. DatascanIamBinding is authoritative for a specific role, replacing all members for that role while preserving other roles. DatascanIamMember is non-authoritative and adds a single member to a role without affecting other members.

Can I use DatascanIamPolicy with DatascanIamBinding or DatascanIamMember?

No, DatascanIamPolicy cannot be used alongside DatascanIamBinding or DatascanIamMember because they will conflict over the policy configuration.

Can I use DatascanIamBinding and DatascanIamMember together?

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

Configuration & Identity Formats

What member identity formats are supported?

You can use:

Special identifiers: allUsers, allAuthenticatedUsers
User accounts: user:alice@gmail.com
Service accounts: serviceAccount:my-app@appspot.gserviceaccount.com
Groups: group:admins@example.com
Domains: domain:example.com
Project roles: projectOwner:my-project, projectEditor:my-project, projectViewer:my-project
Federated identities: principal://iam.googleapis.com/locations/global/workforcePools/...

How do I specify custom roles?

Custom roles must use the full format [projects|organizations]/{parent-name}/roles/{role-name}. For example, projects/my-project/roles/my-custom-role or organizations/my-org/roles/my-custom-role.

What properties can't be changed after creation?

All properties are immutable: dataScanId, location, member, project, role, and condition. You must recreate the resource to change any of these values.

Using a different cloud?

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