Manage GCP Security Command Center IAM Permissions

The gcp:securitycenter/v2OrganizationSourceIamMember:V2OrganizationSourceIamMember resource, part of the Pulumi GCP provider, manages IAM access grants for Security Command Center organization sources. This guide focuses on three approaches: single-member grants (non-authoritative), role-level bindings (authoritative per role), and complete policy replacement (fully authoritative).

These resources reference existing Security Command Center sources. The Policy resource replaces all existing access grants and conflicts with Binding and Member resources. Binding and Member resources can coexist if they target different roles. The examples are intentionally small. Combine them with your own source references and identity management.

Grant a single user access to a source

Most IAM configurations add individual users to roles without affecting other members or roles.

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

const member = new gcp.securitycenter.V2OrganizationSourceIamMember("member", {
    source: customSource.name,
    role: "roles/viewer",
    member: "user:jane@example.com",
});

import pulumi
import pulumi_gcp as gcp

member = gcp.securitycenter.V2OrganizationSourceIamMember("member",
    source=custom_source["name"],
    role="roles/viewer",
    member="user:jane@example.com")

package main

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

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		_, err := securitycenter.NewV2OrganizationSourceIamMember(ctx, "member", &securitycenter.V2OrganizationSourceIamMemberArgs{
			Source: pulumi.Any(customSource.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.SecurityCenter.V2OrganizationSourceIamMember("member", new()
    {
        Source = customSource.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.securitycenter.V2OrganizationSourceIamMember;
import com.pulumi.gcp.securitycenter.V2OrganizationSourceIamMemberArgs;
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 V2OrganizationSourceIamMember("member", V2OrganizationSourceIamMemberArgs.builder()
            .source(customSource.name())
            .role("roles/viewer")
            .member("user:jane@example.com")
            .build());

    }
}

resources:
  member:
    type: gcp:securitycenter:V2OrganizationSourceIamMember
    properties:
      source: ${customSource.name}
      role: roles/viewer
      member: user:jane@example.com

The Member resource is non-authoritative: it adds one identity to one role while preserving all other access grants. The source property references the Security Command Center source, role specifies the permission level (e.g., “roles/viewer”), and member identifies the user, service account, or group. This approach works well for incremental access management where you add users one at a time.

Grant multiple users the same role

When teams need to grant the same role to multiple identities, the Binding resource manages all members for that role together.

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

const binding = new gcp.securitycenter.V2OrganizationSourceIamBinding("binding", {
    source: customSource.name,
    role: "roles/viewer",
    members: ["user:jane@example.com"],
});

import pulumi
import pulumi_gcp as gcp

binding = gcp.securitycenter.V2OrganizationSourceIamBinding("binding",
    source=custom_source["name"],
    role="roles/viewer",
    members=["user:jane@example.com"])

package main

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

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		_, err := securitycenter.NewV2OrganizationSourceIamBinding(ctx, "binding", &securitycenter.V2OrganizationSourceIamBindingArgs{
			Source: pulumi.Any(customSource.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.SecurityCenter.V2OrganizationSourceIamBinding("binding", new()
    {
        Source = customSource.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.securitycenter.V2OrganizationSourceIamBinding;
import com.pulumi.gcp.securitycenter.V2OrganizationSourceIamBindingArgs;
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 V2OrganizationSourceIamBinding("binding", V2OrganizationSourceIamBindingArgs.builder()
            .source(customSource.name())
            .role("roles/viewer")
            .members("user:jane@example.com")
            .build());

    }
}

resources:
  binding:
    type: gcp:securitycenter:V2OrganizationSourceIamBinding
    properties:
      source: ${customSource.name}
      role: roles/viewer
      members:
        - user:jane@example.com

The Binding resource is authoritative for its role: it defines all members who should have that role, replacing any previous member list for that role. Other roles on the source remain unchanged. The members property accepts a list of identities in the same formats as the Member resource. Use this when you want to manage role membership as a group rather than adding members individually.

Replace the entire IAM policy

Organizations that need complete control over all roles and members define the entire IAM policy in one declaration.

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.securitycenter.V2OrganizationSourceIamPolicy("policy", {
    source: customSource.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.securitycenter.V2OrganizationSourceIamPolicy("policy",
    source=custom_source["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/securitycenter"
	"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 = securitycenter.NewV2OrganizationSourceIamPolicy(ctx, "policy", &securitycenter.V2OrganizationSourceIamPolicyArgs{
			Source:     pulumi.Any(customSource.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.SecurityCenter.V2OrganizationSourceIamPolicy("policy", new()
    {
        Source = customSource.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.securitycenter.V2OrganizationSourceIamPolicy;
import com.pulumi.gcp.securitycenter.V2OrganizationSourceIamPolicyArgs;
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 V2OrganizationSourceIamPolicy("policy", V2OrganizationSourceIamPolicyArgs.builder()
            .source(customSource.name())
            .policyData(admin.policyData())
            .build());

    }
}

resources:
  policy:
    type: gcp:securitycenter:V2OrganizationSourceIamPolicy
    properties:
      source: ${customSource.name}
      policyData: ${admin.policyData}
variables:
  admin:
    fn::invoke:
      function: gcp:organizations:getIAMPolicy
      arguments:
        bindings:
          - role: roles/viewer
            members:
              - user:jane@example.com

The Policy resource is fully authoritative: it replaces all existing IAM bindings on the source. The policyData property comes from the getIAMPolicy data source, which constructs a policy document from bindings (role-to-members mappings). This approach ensures no unexpected access grants exist, but it conflicts with Binding and Member resources because they would compete to control the same policy.

Beyond these examples

These snippets focus on specific IAM management features: incremental member grants, role-level binding management, and authoritative policy replacement. They’re intentionally minimal rather than full access control configurations.

The examples reference pre-existing infrastructure such as Security Command Center organization sources. They focus on configuring IAM access rather than provisioning the sources themselves.

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

Conditional IAM bindings (condition property)
Custom role definitions
Federated identity configuration
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 V2OrganizationSourceIamMember resource reference for all available configuration options.

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Frequently Asked Questions

Resource Selection & Conflicts

Can I use V2OrganizationSourceIamPolicy with V2OrganizationSourceIamBinding or V2OrganizationSourceIamMember?

No, V2OrganizationSourceIamPolicy cannot be used with V2OrganizationSourceIamBinding or V2OrganizationSourceIamMember because they will conflict over policy state. However, V2OrganizationSourceIamBinding and V2OrganizationSourceIamMember can be used together as long as they don’t grant privileges to the same role.

Which IAM resource should I use for managing Security Command Center source permissions?

Choose based on your needs: V2OrganizationSourceIamPolicy is authoritative and replaces the entire policy, V2OrganizationSourceIamBinding is authoritative per role and preserves other roles, and V2OrganizationSourceIamMember is non-authoritative and preserves other members for the same role.

Configuration & Identity Formats

What member identity formats are supported?

Supported formats include allUsers, allAuthenticatedUsers, user:{email}, serviceAccount:{email}, group:{email}, domain:{domain}, projectOwner/Editor/Viewer:{projectid}, and federated identities using principal:// format.

What format do custom roles need?

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

Can I change the role or member after creating the resource?

No, all properties (member, role, source, organization, and condition) are immutable and cannot be changed after creation. You must recreate the resource to modify these values.

Using a different cloud?

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