Manage GCP Cloud Build Connection IAM Permissions

The gcp:cloudbuildv2/connectionIAMMember:ConnectionIAMMember resource, part of the Pulumi GCP provider, manages IAM permissions for Cloud Build v2 Connection resources by adding individual members to roles. This guide focuses on three approaches: adding single members to roles (ConnectionIAMMember), managing complete role membership (ConnectionIAMBinding), and replacing entire policies (ConnectionIAMPolicy).

These resources reference existing Cloud Build v2 Connections. ConnectionIAMPolicy cannot coexist with ConnectionIAMBinding or ConnectionIAMMember on the same connection. ConnectionIAMBinding and ConnectionIAMMember can coexist only if they manage different roles. The examples are intentionally small. Combine them with your own connection resources and organizational IAM requirements.

Grant a single user access to a connection

Most IAM configurations add individual users or service accounts to specific roles without disrupting existing permissions.

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

const member = new gcp.cloudbuildv2.ConnectionIAMMember("member", {
    project: my_connection.project,
    location: my_connection.location,
    name: my_connection.name,
    role: "roles/cloudbuild.connectionViewer",
    member: "user:jane@example.com",
});

import pulumi
import pulumi_gcp as gcp

member = gcp.cloudbuildv2.ConnectionIAMMember("member",
    project=my_connection["project"],
    location=my_connection["location"],
    name=my_connection["name"],
    role="roles/cloudbuild.connectionViewer",
    member="user:jane@example.com")

package main

import (
	"github.com/pulumi/pulumi-gcp/sdk/v9/go/gcp/cloudbuildv2"
	"github.com/pulumi/pulumi/sdk/v3/go/pulumi"
)

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		_, err := cloudbuildv2.NewConnectionIAMMember(ctx, "member", &cloudbuildv2.ConnectionIAMMemberArgs{
			Project:  pulumi.Any(my_connection.Project),
			Location: pulumi.Any(my_connection.Location),
			Name:     pulumi.Any(my_connection.Name),
			Role:     pulumi.String("roles/cloudbuild.connectionViewer"),
			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.CloudBuildV2.ConnectionIAMMember("member", new()
    {
        Project = my_connection.Project,
        Location = my_connection.Location,
        Name = my_connection.Name,
        Role = "roles/cloudbuild.connectionViewer",
        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.cloudbuildv2.ConnectionIAMMember;
import com.pulumi.gcp.cloudbuildv2.ConnectionIAMMemberArgs;
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 ConnectionIAMMember("member", ConnectionIAMMemberArgs.builder()
            .project(my_connection.project())
            .location(my_connection.location())
            .name(my_connection.name())
            .role("roles/cloudbuild.connectionViewer")
            .member("user:jane@example.com")
            .build());

    }
}

resources:
  member:
    type: gcp:cloudbuildv2:ConnectionIAMMember
    properties:
      project: ${["my-connection"].project}
      location: ${["my-connection"].location}
      name: ${["my-connection"].name}
      role: roles/cloudbuild.connectionViewer
      member: user:jane@example.com

The member property identifies who receives access using formats like “user:jane@example.com” or “serviceAccount:app@project.iam.gserviceaccount.com”. The role property specifies the permission level. ConnectionIAMMember is non-authoritative: it adds this one member to this one role while preserving all other members and roles on the connection.

Grant multiple members the same role

When several users need identical permissions, ConnectionIAMBinding manages the complete member list for a single role.

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

const binding = new gcp.cloudbuildv2.ConnectionIAMBinding("binding", {
    project: my_connection.project,
    location: my_connection.location,
    name: my_connection.name,
    role: "roles/cloudbuild.connectionViewer",
    members: ["user:jane@example.com"],
});

import pulumi
import pulumi_gcp as gcp

binding = gcp.cloudbuildv2.ConnectionIAMBinding("binding",
    project=my_connection["project"],
    location=my_connection["location"],
    name=my_connection["name"],
    role="roles/cloudbuild.connectionViewer",
    members=["user:jane@example.com"])

package main

import (
	"github.com/pulumi/pulumi-gcp/sdk/v9/go/gcp/cloudbuildv2"
	"github.com/pulumi/pulumi/sdk/v3/go/pulumi"
)

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		_, err := cloudbuildv2.NewConnectionIAMBinding(ctx, "binding", &cloudbuildv2.ConnectionIAMBindingArgs{
			Project:  pulumi.Any(my_connection.Project),
			Location: pulumi.Any(my_connection.Location),
			Name:     pulumi.Any(my_connection.Name),
			Role:     pulumi.String("roles/cloudbuild.connectionViewer"),
			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.CloudBuildV2.ConnectionIAMBinding("binding", new()
    {
        Project = my_connection.Project,
        Location = my_connection.Location,
        Name = my_connection.Name,
        Role = "roles/cloudbuild.connectionViewer",
        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.cloudbuildv2.ConnectionIAMBinding;
import com.pulumi.gcp.cloudbuildv2.ConnectionIAMBindingArgs;
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 ConnectionIAMBinding("binding", ConnectionIAMBindingArgs.builder()
            .project(my_connection.project())
            .location(my_connection.location())
            .name(my_connection.name())
            .role("roles/cloudbuild.connectionViewer")
            .members("user:jane@example.com")
            .build());

    }
}

resources:
  binding:
    type: gcp:cloudbuildv2:ConnectionIAMBinding
    properties:
      project: ${["my-connection"].project}
      location: ${["my-connection"].location}
      name: ${["my-connection"].name}
      role: roles/cloudbuild.connectionViewer
      members:
        - user:jane@example.com

The members property takes an array of identities. ConnectionIAMBinding is authoritative for its role: it replaces the member list for “roles/cloudbuild.connectionViewer” but leaves other roles untouched. If another resource grants the same role, they will conflict.

Replace the entire IAM policy for a connection

Organizations with strict policy requirements sometimes define the complete IAM policy from scratch.

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

const admin = gcp.organizations.getIAMPolicy({
    bindings: [{
        role: "roles/cloudbuild.connectionViewer",
        members: ["user:jane@example.com"],
    }],
});
const policy = new gcp.cloudbuildv2.ConnectionIAMPolicy("policy", {
    project: my_connection.project,
    location: my_connection.location,
    name: my_connection.name,
    policyData: admin.then(admin => admin.policyData),
});

import pulumi
import pulumi_gcp as gcp

admin = gcp.organizations.get_iam_policy(bindings=[{
    "role": "roles/cloudbuild.connectionViewer",
    "members": ["user:jane@example.com"],
}])
policy = gcp.cloudbuildv2.ConnectionIAMPolicy("policy",
    project=my_connection["project"],
    location=my_connection["location"],
    name=my_connection["name"],
    policy_data=admin.policy_data)

package main

import (
	"github.com/pulumi/pulumi-gcp/sdk/v9/go/gcp/cloudbuildv2"
	"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/cloudbuild.connectionViewer",
					Members: []string{
						"user:jane@example.com",
					},
				},
			},
		}, nil)
		if err != nil {
			return err
		}
		_, err = cloudbuildv2.NewConnectionIAMPolicy(ctx, "policy", &cloudbuildv2.ConnectionIAMPolicyArgs{
			Project:    pulumi.Any(my_connection.Project),
			Location:   pulumi.Any(my_connection.Location),
			Name:       pulumi.Any(my_connection.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/cloudbuild.connectionViewer",
                Members = new[]
                {
                    "user:jane@example.com",
                },
            },
        },
    });

    var policy = new Gcp.CloudBuildV2.ConnectionIAMPolicy("policy", new()
    {
        Project = my_connection.Project,
        Location = my_connection.Location,
        Name = my_connection.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.cloudbuildv2.ConnectionIAMPolicy;
import com.pulumi.gcp.cloudbuildv2.ConnectionIAMPolicyArgs;
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/cloudbuild.connectionViewer")
                .members("user:jane@example.com")
                .build())
            .build());

        var policy = new ConnectionIAMPolicy("policy", ConnectionIAMPolicyArgs.builder()
            .project(my_connection.project())
            .location(my_connection.location())
            .name(my_connection.name())
            .policyData(admin.policyData())
            .build());

    }
}

resources:
  policy:
    type: gcp:cloudbuildv2:ConnectionIAMPolicy
    properties:
      project: ${["my-connection"].project}
      location: ${["my-connection"].location}
      name: ${["my-connection"].name}
      policyData: ${admin.policyData}
variables:
  admin:
    fn::invoke:
      function: gcp:organizations:getIAMPolicy
      arguments:
        bindings:
          - role: roles/cloudbuild.connectionViewer
            members:
              - user:jane@example.com

The policyData property comes from the getIAMPolicy data source, which constructs a complete policy document from bindings. ConnectionIAMPolicy is fully authoritative: it replaces every role and member on the connection. You cannot use ConnectionIAMPolicy alongside ConnectionIAMBinding or ConnectionIAMMember on the same connection.

Beyond these examples

These snippets focus on specific IAM management approaches: incremental permission grants (Member), role-level member management (Binding), and authoritative policy replacement (Policy). They’re intentionally minimal rather than complete access control configurations.

The examples reference pre-existing infrastructure such as Cloud Build v2 Connection resources. They focus on permission assignment rather than connection provisioning.

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

Conditional IAM bindings (condition property)
Custom role definitions
Federated identity configuration
Policy data source for read-only access

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 ConnectionIAMMember resource reference for all available configuration options.

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Frequently Asked Questions

Resource Conflicts & Compatibility

Can I use ConnectionIAMPolicy with ConnectionIAMBinding or ConnectionIAMMember?

No, ConnectionIAMPolicy cannot be used with ConnectionIAMBinding or ConnectionIAMMember because they will conflict over the policy state. Choose one approach: use ConnectionIAMPolicy for full policy control, or use ConnectionIAMBinding/ConnectionIAMMember for incremental changes.

Can I use ConnectionIAMBinding and ConnectionIAMMember together?

Yes, but only if they don’t grant privileges to the same role. Each role must be managed by either ConnectionIAMBinding or ConnectionIAMMember, not both.

Resource Types & Use Cases

What's the difference between ConnectionIAMPolicy, ConnectionIAMBinding, and ConnectionIAMMember?

ConnectionIAMPolicy is authoritative and replaces the entire IAM policy. ConnectionIAMBinding is authoritative for a specific role, preserving other roles. ConnectionIAMMember is non-authoritative, adding a single member while preserving other members for that role.

Which IAM resource should I use to grant access to a Cloud Build v2 connection?

Use ConnectionIAMMember to add individual members, ConnectionIAMBinding to manage all members for a specific role, or ConnectionIAMPolicy for complete policy control.

Identity & Role Configuration

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 (e.g., principal://iam.googleapis.com/...).

How do I specify custom IAM roles?

Custom roles must use the format [projects|organizations]/{parent-name}/roles/{role-name}. For example, projects/my-project/roles/my-custom-role.

Using a different cloud?

Explore security guides for other cloud providers:

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