Manage GCP Data Catalog Tag Template IAM Access

The gcp:datacatalog/tagTemplateIamMember:TagTemplateIamMember resource, part of the Pulumi GCP provider, manages IAM access to Data Catalog tag templates. Three related resources provide different levels of control: TagTemplateIamMember grants roles to individual members non-authoritatively, TagTemplateIamBinding manages all members for a specific role authoritatively, and TagTemplateIamPolicy replaces the entire IAM policy. This guide focuses on three capabilities: single-member grants, multi-member bindings, and full policy replacement.

These resources reference existing tag templates and typically use project and region from provider configuration. The examples are intentionally small. Combine them with your own tag template resources and identity management strategy. Note that TagTemplateIamPolicy cannot be used alongside TagTemplateIamBinding or TagTemplateIamMember, as they will conflict over policy state.

Grant a role to a single member

Most IAM configurations add one user or service account to a role while preserving existing members.

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

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

import pulumi
import pulumi_gcp as gcp

member = gcp.datacatalog.TagTemplateIamMember("member",
    tag_template=basic_tag_template["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.NewTagTemplateIamMember(ctx, "member", &datacatalog.TagTemplateIamMemberArgs{
			TagTemplate: pulumi.Any(basicTagTemplate.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.TagTemplateIamMember("member", new()
    {
        TagTemplate = basicTagTemplate.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.TagTemplateIamMember;
import com.pulumi.gcp.datacatalog.TagTemplateIamMemberArgs;
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 TagTemplateIamMember("member", TagTemplateIamMemberArgs.builder()
            .tagTemplate(basicTagTemplate.name())
            .role("roles/viewer")
            .member("user:jane@example.com")
            .build());

    }
}

resources:
  member:
    type: gcp:datacatalog:TagTemplateIamMember
    properties:
      tagTemplate: ${basicTagTemplate.name}
      role: roles/viewer
      member: user:jane@example.com

The member property specifies the identity receiving access, using formats like “user:jane@example.com” for Google accounts or “serviceAccount:app@project.iam.gserviceaccount.com” for service accounts. The role property defines the permission level. This resource is non-authoritative: it adds the member without removing others who already have the role.

Grant a role to multiple members at once

When several identities need the same role, TagTemplateIamBinding manages the complete member list.

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

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

import pulumi
import pulumi_gcp as gcp

binding = gcp.datacatalog.TagTemplateIamBinding("binding",
    tag_template=basic_tag_template["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.NewTagTemplateIamBinding(ctx, "binding", &datacatalog.TagTemplateIamBindingArgs{
			TagTemplate: pulumi.Any(basicTagTemplate.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.TagTemplateIamBinding("binding", new()
    {
        TagTemplate = basicTagTemplate.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.TagTemplateIamBinding;
import com.pulumi.gcp.datacatalog.TagTemplateIamBindingArgs;
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 TagTemplateIamBinding("binding", TagTemplateIamBindingArgs.builder()
            .tagTemplate(basicTagTemplate.name())
            .role("roles/viewer")
            .members("user:jane@example.com")
            .build());

    }
}

resources:
  binding:
    type: gcp:datacatalog:TagTemplateIamBinding
    properties:
      tagTemplate: ${basicTagTemplate.name}
      role: roles/viewer
      members:
        - user:jane@example.com

The members property takes an array of identities. This resource is authoritative for the specified role: it sets exactly which members have that role, removing any members not in the list. Other roles on the tag template remain unchanged.

Replace the entire IAM policy

Some deployments require complete control over all roles and members.

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.TagTemplateIamPolicy("policy", {
    tagTemplate: basicTagTemplate.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.TagTemplateIamPolicy("policy",
    tag_template=basic_tag_template["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.NewTagTemplateIamPolicy(ctx, "policy", &datacatalog.TagTemplateIamPolicyArgs{
			TagTemplate: pulumi.Any(basicTagTemplate.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.TagTemplateIamPolicy("policy", new()
    {
        TagTemplate = basicTagTemplate.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.TagTemplateIamPolicy;
import com.pulumi.gcp.datacatalog.TagTemplateIamPolicyArgs;
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 TagTemplateIamPolicy("policy", TagTemplateIamPolicyArgs.builder()
            .tagTemplate(basicTagTemplate.name())
            .policyData(admin.policyData())
            .build());

    }
}

resources:
  policy:
    type: gcp:datacatalog:TagTemplateIamPolicy
    properties:
      tagTemplate: ${basicTagTemplate.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 accepts a complete IAM policy document, typically retrieved from getIAMPolicy. This resource is fully authoritative: it replaces the entire IAM policy, removing any roles or members not defined in the policy data. Use this when you need to manage all access in one place, but avoid combining it with TagTemplateIamBinding or TagTemplateIamMember resources.

Beyond these examples

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

The examples reference pre-existing infrastructure such as Data Catalog tag templates and a GCP project with provider configuration. They focus on IAM binding configuration rather than provisioning the underlying tag templates.

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

Conditional IAM bindings (condition property)
Explicit project and region specification
Custom role definitions
Federated identity principals

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 TagTemplateIamMember resource reference for all available configuration options.

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Frequently Asked Questions

Resource Selection & Conflicts

What's the difference between TagTemplateIamPolicy, TagTemplateIamBinding, and TagTemplateIamMember?

TagTemplateIamPolicy is authoritative and replaces the entire IAM policy. TagTemplateIamBinding is authoritative for a specific role but preserves other roles in the policy. TagTemplateIamMember is non-authoritative and adds a single member to a role while preserving other members.

Can I use TagTemplateIamPolicy with TagTemplateIamBinding or TagTemplateIamMember?

No, TagTemplateIamPolicy cannot be used with TagTemplateIamBinding or TagTemplateIamMember as they will conflict over policy control.

Can I use TagTemplateIamBinding and TagTemplateIamMember together?

Yes, but only if they don’t grant privileges to the same role. Using both for the same role will cause conflicts.

Which IAM resource should I use for my use case?

Use TagTemplateIamMember to add individual members without affecting existing permissions. Use TagTemplateIamBinding to manage all members for a specific role. Use TagTemplateIamPolicy only when you need complete control over the entire IAM policy.

Configuration & Identity Formats

What member identity formats are supported?

Supported formats include: allUsers, allAuthenticatedUsers, user:{email}, serviceAccount:{email}, group:{email}, domain:{domain}, projectOwner:{projectid}, projectEditor:{projectid}, projectViewer:{projectid}, and federated identities like principal://iam.googleapis.com/....

How do I specify a custom IAM role?

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

What properties are immutable after creation?

All properties are immutable: member, role, tagTemplate, project, and region. Changes to any of these require resource replacement.

Import & Advanced Usage

How do I import existing IAM member bindings?

Use space-delimited identifiers with the resource path, role, and member identity:

pulumi import gcp:datacatalog/tagTemplateIamMember:TagTemplateIamMember editor "projects/{{project}}/locations/{{region}}/tagTemplates/{{tag_template}} roles/viewer user:jane@example.com"

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