Manage IAM Policies for GCP Dataplex Lakes

The gcp:dataplex/lakeIamPolicy:LakeIamPolicy resource, part of the Pulumi GCP provider, manages IAM permissions for Dataplex Lakes using authoritative policy replacement. This guide focuses on three approaches: authoritative policy management (LakeIamPolicy), role-level binding (LakeIamBinding), and incremental member addition (LakeIamMember).

All three resources reference an existing Dataplex Lake by name, location, and project. The examples are intentionally small. Combine them with your own lake resources and organizational IAM structure.

Replace the entire IAM policy for a lake

When you need complete control over lake 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.LakeIamPolicy("policy", {
    project: example.project,
    location: example.location,
    lake: 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.LakeIamPolicy("policy",
    project=example["project"],
    location=example["location"],
    lake=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.NewLakeIamPolicy(ctx, "policy", &dataplex.LakeIamPolicyArgs{
			Project:    pulumi.Any(example.Project),
			Location:   pulumi.Any(example.Location),
			Lake:       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.LakeIamPolicy("policy", new()
    {
        Project = example.Project,
        Location = example.Location,
        Lake = 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.LakeIamPolicy;
import com.pulumi.gcp.dataplex.LakeIamPolicyArgs;
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 LakeIamPolicy("policy", LakeIamPolicyArgs.builder()
            .project(example.project())
            .location(example.location())
            .lake(example.name())
            .policyData(admin.policyData())
            .build());

    }
}

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

The LakeIamPolicy resource is authoritative: it replaces the lake’s entire IAM policy with the bindings you specify. The policyData property accepts output from getIAMPolicy, which defines roles and members. This approach gives you full control but removes any bindings not declared in your code.

Grant a role to multiple members at once

When multiple users or service accounts need the same lake permissions, you can bind them all to a single role in one resource.

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

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

import pulumi
import pulumi_gcp as gcp

binding = gcp.dataplex.LakeIamBinding("binding",
    project=example["project"],
    location=example["location"],
    lake=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.NewLakeIamBinding(ctx, "binding", &dataplex.LakeIamBindingArgs{
			Project:  pulumi.Any(example.Project),
			Location: pulumi.Any(example.Location),
			Lake:     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.LakeIamBinding("binding", new()
    {
        Project = example.Project,
        Location = example.Location,
        Lake = 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.LakeIamBinding;
import com.pulumi.gcp.dataplex.LakeIamBindingArgs;
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 LakeIamBinding("binding", LakeIamBindingArgs.builder()
            .project(example.project())
            .location(example.location())
            .lake(example.name())
            .role("roles/viewer")
            .members("user:jane@example.com")
            .build());

    }
}

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

The LakeIamBinding resource is authoritative for a specific role: it replaces all members for that role while preserving other roles on the lake. The members property accepts a list of identities (users, service accounts, groups). You can use multiple LakeIamBinding resources for different roles on the same lake.

Add a single member to a role incrementally

When you need to grant access to one identity without affecting other members of the same role, use a non-authoritative member resource.

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

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

import pulumi
import pulumi_gcp as gcp

member = gcp.dataplex.LakeIamMember("member",
    project=example["project"],
    location=example["location"],
    lake=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.NewLakeIamMember(ctx, "member", &dataplex.LakeIamMemberArgs{
			Project:  pulumi.Any(example.Project),
			Location: pulumi.Any(example.Location),
			Lake:     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.LakeIamMember("member", new()
    {
        Project = example.Project,
        Location = example.Location,
        Lake = 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.LakeIamMember;
import com.pulumi.gcp.dataplex.LakeIamMemberArgs;
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 LakeIamMember("member", LakeIamMemberArgs.builder()
            .project(example.project())
            .location(example.location())
            .lake(example.name())
            .role("roles/viewer")
            .member("user:jane@example.com")
            .build());

    }
}

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

The LakeIamMember resource is non-authoritative: it adds one member to a role without replacing existing members. The member property accepts a single identity. This approach works well when multiple teams manage access to the same lake, since each team can add members without conflicting with others.

Beyond these examples

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

The examples reference pre-existing infrastructure such as Dataplex Lake resources (by name, location, and project). They focus on IAM configuration rather than provisioning the lakes themselves.

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

Conditional IAM bindings (condition blocks)
Custom roles and organization-level roles
Service account impersonation
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 LakeIamPolicy resource reference for all available configuration options.

Let's manage IAM Policies for GCP Dataplex Lakes

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Frequently Asked Questions

Resource Selection & Conflicts

Why am I seeing IAM policy conflicts between my Dataplex Lake resources?

LakeIamPolicy cannot be used with LakeIamBinding or LakeIamMember because they manage policies differently and will conflict. Choose one approach: use LakeIamPolicy alone for full control, or use LakeIamBinding/LakeIamMember together.

Which IAM resource should I use for managing Dataplex Lake permissions?

Choose based on your needs:

LakeIamPolicy: Authoritative, replaces the entire IAM policy
LakeIamBinding: Authoritative for a specific role, preserves other roles
LakeIamMember: Non-authoritative, adds individual members while preserving existing ones

Can I use LakeIamBinding with LakeIamMember?

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

Configuration & Properties

What properties can't I change after creating a LakeIamPolicy?

The lake, location, and project properties are all immutable and cannot be changed after creation.

Where does the policyData come from?

Use the gcp.organizations.getIAMPolicy data source to generate the policy data, as shown in the examples.

Import & Custom Roles

How do I import a Dataplex Lake IAM resource with a custom role?

Use the full name format: [projects/my-project|organizations/my-org]/roles/my-custom-role when importing.

Using a different cloud?

Explore iam guides for other cloud providers:

AWS Guides Azure Guides