Manage GCP Data Catalog Entry Group IAM Access

The gcp:datacatalog/entryGroupIamMember:EntryGroupIamMember resource, part of the Pulumi GCP provider, manages IAM permissions for Data Catalog entry groups using three distinct approaches: authoritative policy replacement, role-level binding management, and incremental member grants. This guide focuses on three capabilities: authoritative policy replacement, role-level member management, and incremental member grants.

These resources reference existing entry groups and have strict compatibility rules. EntryGroupIamPolicy cannot be used with EntryGroupIamBinding or EntryGroupIamMember (they conflict over policy ownership). EntryGroupIamBinding and EntryGroupIamMember can coexist only if they target different roles. The examples are intentionally small. Combine them with your own entry group infrastructure and role definitions.

Replace the entire IAM policy with a new definition

When you need complete control over all IAM bindings, you can replace the entire policy in one operation, ensuring no unexpected permissions remain.

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.datacatalog.EntryGroupIamPolicy("policy", {
    entryGroup: basicEntryGroup.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.datacatalog.EntryGroupIamPolicy("policy",
    entry_group=basic_entry_group["name"],
    policy_data=admin.policy_data)

package main

import (
	"github.com/pulumi/pulumi-gcp/sdk/v9/go/gcp/datacatalog"
	"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 = datacatalog.NewEntryGroupIamPolicy(ctx, "policy", &datacatalog.EntryGroupIamPolicyArgs{
			EntryGroup: pulumi.Any(basicEntryGroup.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.DataCatalog.EntryGroupIamPolicy("policy", new()
    {
        EntryGroup = basicEntryGroup.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.datacatalog.EntryGroupIamPolicy;
import com.pulumi.gcp.datacatalog.EntryGroupIamPolicyArgs;
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 EntryGroupIamPolicy("policy", EntryGroupIamPolicyArgs.builder()
            .entryGroup(basicEntryGroup.name())
            .policyData(admin.policyData())
            .build());

    }
}

resources:
  policy:
    type: gcp:datacatalog:EntryGroupIamPolicy
    properties:
      entryGroup: ${basicEntryGroup.name}
      policyData: ${admin.policyData}
variables:
  admin:
    fn::invoke:
      function: gcp:organizations:getIAMPolicy
      arguments:
        bindings:
          - role: roles/viewer
            members:
              - user:jane@example.com

The EntryGroupIamPolicy resource sets all IAM bindings authoritatively. The policyData property accepts output from getIAMPolicy, which defines bindings as role-member pairs. This approach removes any existing grants not included in the new policy, making it unsuitable for use alongside Binding or Member resources.

Grant a role to multiple members at once

Teams often grant the same role to several users or service accounts simultaneously, managing all members for that role while preserving other roles.

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

const binding = new gcp.datacatalog.EntryGroupIamBinding("binding", {
    entryGroup: basicEntryGroup.name,
    role: "roles/viewer",
    members: ["user:jane@example.com"],
});

import pulumi
import pulumi_gcp as gcp

binding = gcp.datacatalog.EntryGroupIamBinding("binding",
    entry_group=basic_entry_group["name"],
    role="roles/viewer",
    members=["user:jane@example.com"])

package main

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

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		_, err := datacatalog.NewEntryGroupIamBinding(ctx, "binding", &datacatalog.EntryGroupIamBindingArgs{
			EntryGroup: pulumi.Any(basicEntryGroup.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.DataCatalog.EntryGroupIamBinding("binding", new()
    {
        EntryGroup = basicEntryGroup.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.datacatalog.EntryGroupIamBinding;
import com.pulumi.gcp.datacatalog.EntryGroupIamBindingArgs;
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 EntryGroupIamBinding("binding", EntryGroupIamBindingArgs.builder()
            .entryGroup(basicEntryGroup.name())
            .role("roles/viewer")
            .members("user:jane@example.com")
            .build());

    }
}

resources:
  binding:
    type: gcp:datacatalog:EntryGroupIamBinding
    properties:
      entryGroup: ${basicEntryGroup.name}
      role: roles/viewer
      members:
        - user:jane@example.com

The EntryGroupIamBinding resource controls all members for a specific role. The members array lists all identities that should have the role; any members not in this list are removed. Other roles in the entry group’s IAM policy remain unchanged, allowing you to use multiple Binding resources for different roles.

Add a single member to a role incrementally

When you need to grant access to one user without affecting other members of the same role, non-authoritative member resources add permissions incrementally.

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

const member = new gcp.datacatalog.EntryGroupIamMember("member", {
    entryGroup: basicEntryGroup.name,
    role: "roles/viewer",
    member: "user:jane@example.com",
});

import pulumi
import pulumi_gcp as gcp

member = gcp.datacatalog.EntryGroupIamMember("member",
    entry_group=basic_entry_group["name"],
    role="roles/viewer",
    member="user:jane@example.com")

package main

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

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		_, err := datacatalog.NewEntryGroupIamMember(ctx, "member", &datacatalog.EntryGroupIamMemberArgs{
			EntryGroup: pulumi.Any(basicEntryGroup.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.DataCatalog.EntryGroupIamMember("member", new()
    {
        EntryGroup = basicEntryGroup.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.datacatalog.EntryGroupIamMember;
import com.pulumi.gcp.datacatalog.EntryGroupIamMemberArgs;
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 EntryGroupIamMember("member", EntryGroupIamMemberArgs.builder()
            .entryGroup(basicEntryGroup.name())
            .role("roles/viewer")
            .member("user:jane@example.com")
            .build());

    }
}

resources:
  member:
    type: gcp:datacatalog:EntryGroupIamMember
    properties:
      entryGroup: ${basicEntryGroup.name}
      role: roles/viewer
      member: user:jane@example.com

The EntryGroupIamMember resource adds one member to a role without removing existing members. The member property accepts various identity formats: user emails, service accounts, groups, domains, or federated identities. Multiple Member resources can safely target the same role, each adding one identity.

Beyond these examples

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

The examples reference pre-existing infrastructure such as Data Catalog entry groups. They focus on IAM binding configuration rather than provisioning the entry groups themselves.

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

Conditional IAM bindings (condition property)
Custom role definitions and formatting
Project and region specification (defaults to provider config)
Combining Policy with Binding/Member resources (causes conflicts)

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 EntryGroupIamMember resource reference for all available configuration options.

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Frequently Asked Questions

Resource Selection & Conflicts

What's the difference between EntryGroupIamPolicy, EntryGroupIamBinding, and EntryGroupIamMember?

You have three options for managing IAM permissions:

EntryGroupIamPolicy - Authoritative. Replaces the entire IAM policy.
EntryGroupIamBinding - Authoritative per role. Replaces all members for a specific role, preserving other roles.
EntryGroupIamMember - Non-authoritative. Adds a single member to a role, preserving other members.

Can I use EntryGroupIamPolicy with EntryGroupIamBinding or EntryGroupIamMember?

No, EntryGroupIamPolicy cannot be used with EntryGroupIamBinding or EntryGroupIamMember because they will conflict over the policy configuration.

Can I use EntryGroupIamBinding and EntryGroupIamMember together?

Yes, but only if they manage different roles. Using both for the same role causes conflicts.

Configuration & Identity Formats

What identity formats can I use for the member parameter?

The member parameter supports multiple formats:

allUsers or allAuthenticatedUsers for public/authenticated access
user:{email}, serviceAccount:{email}, group:{email} for specific identities
domain:{domain} for G Suite domains
projectOwner/Editor/Viewer:{projectid} for project-level roles
Federated identities using principal:// format

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.

Immutability & Lifecycle

What properties can't be changed after creation?

All core properties are immutable: entryGroup, member, project, region, role, and condition. Changing any of these requires recreating the resource.

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