Manage GCP Data Catalog Entry Group IAM Policies

The gcp:datacatalog/entryGroupIamPolicy:EntryGroupIamPolicy resource, part of the Pulumi GCP provider, manages IAM policies for Data Catalog entry groups, controlling who can access and manage catalog metadata. This guide focuses on three approaches: authoritative policy replacement, role-level member binding, and incremental member addition.

Data Catalog provides three IAM resources for entry groups, each with different update semantics. EntryGroupIamPolicy replaces the entire policy, EntryGroupIamBinding manages all members for one role, and EntryGroupIamMember adds individual members. These resources cannot be mixed for the same entry group and role without causing conflicts. The examples are intentionally small. Choose the resource type that matches your access control workflow.

Replace the entire IAM policy for an entry group

When you need complete control over permissions, you can set the entire IAM policy at once.

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 is authoritative: it replaces any existing policy on the entry group. The policyData comes from the getIAMPolicy data source, which defines bindings (role-to-members mappings). This approach gives you full control but cannot coexist with EntryGroupIamBinding or EntryGroupIamMember resources on the same entry group.

Grant a role to multiple members at once

When several users need the same role, you can bind them all in one resource.

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 is authoritative for the specified role: it replaces all members for that role but preserves other roles in the policy. The members property accepts a list of identities (users, service accounts, groups). You can use multiple EntryGroupIamBinding resources on the same entry group as long as they manage different roles.

Add a single member to a role incrementally

When you need to grant access to one user without affecting others, add them individually.

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 is non-authoritative: it adds one member to one role without removing existing members. The member property takes a single identity. This resource type is safe to use alongside EntryGroupIamBinding resources as long as they don’t grant the same role.

Beyond these examples

These snippets focus on specific IAM management approaches: authoritative vs non-authoritative updates, 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 Data Catalog entry groups. They focus on IAM policy configuration rather than provisioning the underlying catalog resources.

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

Project and region specification (defaults to provider or parent resource)
Conditional IAM bindings
Custom role definitions
Service account creation and management

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 EntryGroupIamPolicy resource reference for all available configuration options.

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Frequently Asked Questions

Resource Selection & Conflicts

Which IAM resource should I use for managing EntryGroup permissions?

Choose based on your needs:

EntryGroupIamPolicy - Authoritative, replaces the entire IAM policy
EntryGroupIamBinding - Authoritative for a specific role, preserves other roles
EntryGroupIamMember - Non-authoritative, adds a single member while preserving others

Can I use EntryGroupIamPolicy with EntryGroupIamBinding or EntryGroupIamMember?

No, EntryGroupIamPolicy cannot be used alongside EntryGroupIamBinding or EntryGroupIamMember because they will conflict over policy control.

Can I use EntryGroupIamBinding and EntryGroupIamMember together?

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

Configuration & Setup

How do I generate the policy data for EntryGroupIamPolicy?

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

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