Manage GCP Cloud Run Service IAM Access

The gcp:cloudrunv2/serviceIamMember:ServiceIamMember resource, part of the Pulumi GCP provider, manages IAM permissions for Cloud Run v2 services by adding individual members to roles without affecting other members. This guide focuses on three capabilities: single-member role grants, multi-member role bindings, and complete policy replacement.

Cloud Run IAM resources come in three variants with different authoritativeness levels. ServiceIamMember is non-authoritative (preserves other members), ServiceIamBinding is authoritative for a role (replaces all members for that role), and ServiceIamPolicy is fully authoritative (replaces the entire policy). ServiceIamPolicy cannot be used with the other two resources, as they will conflict. The examples are intentionally small. Combine them with your own Cloud Run services and identity management.

Grant a role to a single member

Most IAM configurations add one user or service account to a role without affecting existing assignments.

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

const member = new gcp.cloudrunv2.ServiceIamMember("member", {
    project: _default.project,
    location: _default.location,
    name: _default.name,
    role: "roles/viewer",
    member: "user:jane@example.com",
});

import pulumi
import pulumi_gcp as gcp

member = gcp.cloudrunv2.ServiceIamMember("member",
    project=default["project"],
    location=default["location"],
    name=default["name"],
    role="roles/viewer",
    member="user:jane@example.com")

package main

import (
	"github.com/pulumi/pulumi-gcp/sdk/v9/go/gcp/cloudrunv2"
	"github.com/pulumi/pulumi/sdk/v3/go/pulumi"
)

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		_, err := cloudrunv2.NewServiceIamMember(ctx, "member", &cloudrunv2.ServiceIamMemberArgs{
			Project:  pulumi.Any(_default.Project),
			Location: pulumi.Any(_default.Location),
			Name:     pulumi.Any(_default.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.CloudRunV2.ServiceIamMember("member", new()
    {
        Project = @default.Project,
        Location = @default.Location,
        Name = @default.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.cloudrunv2.ServiceIamMember;
import com.pulumi.gcp.cloudrunv2.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()
            .project(default_.project())
            .location(default_.location())
            .name(default_.name())
            .role("roles/viewer")
            .member("user:jane@example.com")
            .build());

    }
}

resources:
  member:
    type: gcp:cloudrunv2:ServiceIamMember
    properties:
      project: ${default.project}
      location: ${default.location}
      name: ${default.name}
      role: roles/viewer
      member: user:jane@example.com

The member property specifies the identity to grant access (user, service account, group, or special identifier like allUsers). The role property defines the permission level. ServiceIamMember is non-authoritative: it adds this member to the role while preserving other members who already have it.

Grant a role to multiple members at once

When several identities need the same permissions, ServiceIamBinding manages the complete member list for a role.

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

const binding = new gcp.cloudrunv2.ServiceIamBinding("binding", {
    project: _default.project,
    location: _default.location,
    name: _default.name,
    role: "roles/viewer",
    members: ["user:jane@example.com"],
});

import pulumi
import pulumi_gcp as gcp

binding = gcp.cloudrunv2.ServiceIamBinding("binding",
    project=default["project"],
    location=default["location"],
    name=default["name"],
    role="roles/viewer",
    members=["user:jane@example.com"])

package main

import (
	"github.com/pulumi/pulumi-gcp/sdk/v9/go/gcp/cloudrunv2"
	"github.com/pulumi/pulumi/sdk/v3/go/pulumi"
)

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		_, err := cloudrunv2.NewServiceIamBinding(ctx, "binding", &cloudrunv2.ServiceIamBindingArgs{
			Project:  pulumi.Any(_default.Project),
			Location: pulumi.Any(_default.Location),
			Name:     pulumi.Any(_default.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.CloudRunV2.ServiceIamBinding("binding", new()
    {
        Project = @default.Project,
        Location = @default.Location,
        Name = @default.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.cloudrunv2.ServiceIamBinding;
import com.pulumi.gcp.cloudrunv2.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()
            .project(default_.project())
            .location(default_.location())
            .name(default_.name())
            .role("roles/viewer")
            .members("user:jane@example.com")
            .build());

    }
}

resources:
  binding:
    type: gcp:cloudrunv2:ServiceIamBinding
    properties:
      project: ${default.project}
      location: ${default.location}
      name: ${default.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 specified role: it replaces any existing members for that role but leaves other roles untouched. This differs from ServiceIamMember, which adds members incrementally.

Replace the entire IAM policy

ServiceIamPolicy sets the complete IAM policy, replacing everything that exists.

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.cloudrunv2.ServiceIamPolicy("policy", {
    project: _default.project,
    location: _default.location,
    name: _default.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.cloudrunv2.ServiceIamPolicy("policy",
    project=default["project"],
    location=default["location"],
    name=default["name"],
    policy_data=admin.policy_data)

package main

import (
	"github.com/pulumi/pulumi-gcp/sdk/v9/go/gcp/cloudrunv2"
	"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 = cloudrunv2.NewServiceIamPolicy(ctx, "policy", &cloudrunv2.ServiceIamPolicyArgs{
			Project:    pulumi.Any(_default.Project),
			Location:   pulumi.Any(_default.Location),
			Name:       pulumi.Any(_default.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.CloudRunV2.ServiceIamPolicy("policy", new()
    {
        Project = @default.Project,
        Location = @default.Location,
        Name = @default.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.cloudrunv2.ServiceIamPolicy;
import com.pulumi.gcp.cloudrunv2.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()
            .project(default_.project())
            .location(default_.location())
            .name(default_.name())
            .policyData(admin.policyData())
            .build());

    }
}

resources:
  policy:
    type: gcp:cloudrunv2:ServiceIamPolicy
    properties:
      project: ${default.project}
      location: ${default.location}
      name: ${default.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 with bindings (role-to-members mappings). ServiceIamPolicy is fully authoritative: it replaces the entire policy. This conflicts with ServiceIamBinding and ServiceIamMember, which modify the policy incrementally.

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 configurations.

The examples reference pre-existing infrastructure such as Cloud Run v2 services. 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
Service account creation
Federated identity 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 Cloud Run v2 Service IAM Member resource reference for all available configuration options.

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Frequently Asked Questions

Resource Selection & Compatibility

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, managing all members for that role while preserving other roles. ServiceIamMember is non-authoritative, adding individual members to a role while preserving other members.

Can I use ServiceIamPolicy with ServiceIamBinding or ServiceIamMember?

No, ServiceIamPolicy cannot be used together 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. Using both for the same role will cause conflicts.

Configuration & Formats

What format do custom roles need to follow?

Custom roles must use the format [projects|organizations]/{parent-name}/roles/{role-name}.

What member identity formats are supported?

Supported formats include allUsers, allAuthenticatedUsers, user:{emailid}, serviceAccount:{emailid}, group:{emailid}, domain:{domain}, projectOwner:projectid, projectEditor:projectid, projectViewer:projectid, and federated identities using the principal identifier format.

Using a different cloud?

Explore security guides for other cloud providers:

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