Manage GCP Service Directory IAM Permissions

The gcp:servicedirectory/serviceIamMember:ServiceIamMember resource, part of the Pulumi GCP provider, grants IAM permissions on Service Directory services by adding individual members to roles. This guide focuses on three capabilities: single-member grants, multi-member role bindings, and complete policy replacement.

Service Directory IAM resources reference existing services and manage permissions through three distinct resources: ServiceIamMember (non-authoritative, adds one member), ServiceIamBinding (authoritative for a role, replaces all members), and ServiceIamPolicy (authoritative for all roles, replaces entire policy). ServiceIamPolicy cannot be used with ServiceIamBinding or ServiceIamMember; they will conflict. The examples are intentionally small. Combine them with your own Service Directory services and identity management.

Grant a role to a single member

Most IAM configurations start by granting a role to one identity without affecting other members.

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

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

import pulumi
import pulumi_gcp as gcp

member = gcp.servicedirectory.ServiceIamMember("member",
    name=example["name"],
    role="roles/viewer",
    member="user:jane@example.com")

package main

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

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		_, err := servicedirectory.NewServiceIamMember(ctx, "member", &servicedirectory.ServiceIamMemberArgs{
			Name:   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.ServiceDirectory.ServiceIamMember("member", new()
    {
        Name = 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.servicedirectory.ServiceIamMember;
import com.pulumi.gcp.servicedirectory.ServiceIamMemberArgs;
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 ServiceIamMember("member", ServiceIamMemberArgs.builder()
            .name(example.name())
            .role("roles/viewer")
            .member("user:jane@example.com")
            .build());

    }
}

resources:
  member:
    type: gcp:servicedirectory:ServiceIamMember
    properties:
      name: ${example.name}
      role: roles/viewer
      member: user:jane@example.com

The member property specifies the identity receiving permissions (user, service account, group, or domain). The role property defines the permission set. ServiceIamMember is non-authoritative: it adds this member to the role without removing existing members.

Grant a role to multiple members at once

When multiple identities need the same permissions, ServiceIamBinding manages the complete member list.

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

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

import pulumi
import pulumi_gcp as gcp

binding = gcp.servicedirectory.ServiceIamBinding("binding",
    name=example["name"],
    role="roles/viewer",
    members=["user:jane@example.com"])

package main

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

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		_, err := servicedirectory.NewServiceIamBinding(ctx, "binding", &servicedirectory.ServiceIamBindingArgs{
			Name: 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.ServiceDirectory.ServiceIamBinding("binding", new()
    {
        Name = 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.servicedirectory.ServiceIamBinding;
import com.pulumi.gcp.servicedirectory.ServiceIamBindingArgs;
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 ServiceIamBinding("binding", ServiceIamBindingArgs.builder()
            .name(example.name())
            .role("roles/viewer")
            .members("user:jane@example.com")
            .build());

    }
}

resources:
  binding:
    type: gcp:servicedirectory:ServiceIamBinding
    properties:
      name: ${example.name}
      role: roles/viewer
      members:
        - user:jane@example.com

The members property lists all identities that should have this role. ServiceIamBinding is authoritative for the role: it replaces any existing members with this list. Other roles on the service remain unchanged.

Replace the entire IAM policy

Some deployments define the complete IAM policy from scratch, replacing any existing configuration.

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.servicedirectory.ServiceIamPolicy("policy", {
    name: 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.servicedirectory.ServiceIamPolicy("policy",
    name=example["name"],
    policy_data=admin.policy_data)

package main

import (
	"github.com/pulumi/pulumi-gcp/sdk/v9/go/gcp/organizations"
	"github.com/pulumi/pulumi-gcp/sdk/v9/go/gcp/servicedirectory"
	"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 = servicedirectory.NewServiceIamPolicy(ctx, "policy", &servicedirectory.ServiceIamPolicyArgs{
			Name:       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.ServiceDirectory.ServiceIamPolicy("policy", new()
    {
        Name = 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.servicedirectory.ServiceIamPolicy;
import com.pulumi.gcp.servicedirectory.ServiceIamPolicyArgs;
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 ServiceIamPolicy("policy", ServiceIamPolicyArgs.builder()
            .name(example.name())
            .policyData(admin.policyData())
            .build());

    }
}

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

The policyData property comes from getIAMPolicy, which constructs a policy document from bindings. ServiceIamPolicy is authoritative: it replaces the entire IAM policy for the service. This resource cannot be used with ServiceIamBinding or ServiceIamMember; they will conflict over policy ownership.

Beyond these examples

These snippets focus on specific IAM management features: single-member grants, multi-member role bindings, and complete policy replacement. They’re intentionally minimal rather than full access control systems.

The examples reference pre-existing infrastructure such as Service Directory services (referenced by name property). They focus on configuring IAM permissions rather than provisioning the services themselves.

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

Conditional IAM bindings (condition property)
Custom role definitions
Federated identity configuration
Resource compatibility constraints (Policy vs Binding/Member)

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

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Frequently Asked Questions

Resource Selection & Conflicts

What's the difference between ServiceIamPolicy, ServiceIamBinding, and ServiceIamMember?

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

Can I use ServiceIamPolicy with ServiceIamBinding or ServiceIamMember?

No, ServiceIamPolicy cannot be used with ServiceIamBinding or ServiceIamMember because they will conflict over the policy configuration.

Can I use ServiceIamBinding and ServiceIamMember together?

Yes, but only if they don’t grant privileges to the same role. Each role must be managed by only one resource type.

Configuration & Identity Formats

What member identity formats are supported?

You can use: allUsers, allAuthenticatedUsers, user:{email}, serviceAccount:{email}, group:{email}, domain:{domain}, projectOwner/Editor/Viewer:{projectid}, and federated identities like principal://iam.googleapis.com/....

How do I specify custom roles?

Custom roles must use the full path 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 I change after creating a ServiceIamMember?

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

Using a different cloud?

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