Manage GCP Tag Value IAM Policies

The gcp:tags/tagValueIamPolicy:TagValueIamPolicy resource, part of the Pulumi GCP provider, manages IAM permissions for tag values. Three related resources provide different update strategies: TagValueIamPolicy replaces the entire policy, TagValueIamBinding manages all members for a specific role, and TagValueIamMember adds individual members. This guide focuses on four capabilities: authoritative policy replacement, role-level member binding, individual member grants, and time-limited access with IAM Conditions.

These resources reference existing tag values and have strict conflict rules. TagValueIamPolicy cannot be used with TagValueIamBinding or TagValueIamMember. TagValueIamBinding and TagValueIamMember can coexist only if they manage different roles. The examples are intentionally small. Combine them with your own tag value infrastructure and choose one update strategy per tag value.

Replace the entire IAM policy for a tag value

When you need complete control over permissions, you can set the entire IAM policy at once, replacing any existing grants.

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.tags.TagValueIamPolicy("policy", {
    tagValue: value.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.tags.TagValueIamPolicy("policy",
    tag_value=value["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/tags"
	"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 = tags.NewTagValueIamPolicy(ctx, "policy", &tags.TagValueIamPolicyArgs{
			TagValue:   pulumi.Any(value.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.Tags.TagValueIamPolicy("policy", new()
    {
        TagValue = @value.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.tags.TagValueIamPolicy;
import com.pulumi.gcp.tags.TagValueIamPolicyArgs;
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 TagValueIamPolicy("policy", TagValueIamPolicyArgs.builder()
            .tagValue(value.name())
            .policyData(admin.policyData())
            .build());

    }
}

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

The TagValueIamPolicy resource sets the complete policy for the tag value. The policyData comes from the getIAMPolicy data source, which defines bindings (role-to-members mappings). This approach is authoritative: it removes any permissions not listed in the policy.

Grant a role to multiple members at once

Teams often grant the same role to several users or service accounts. Binding manages all members for a specific role while preserving other roles.

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

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

import pulumi
import pulumi_gcp as gcp

binding = gcp.tags.TagValueIamBinding("binding",
    tag_value=value["name"],
    role="roles/viewer",
    members=["user:jane@example.com"])

package main

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

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		_, err := tags.NewTagValueIamBinding(ctx, "binding", &tags.TagValueIamBindingArgs{
			TagValue: pulumi.Any(value.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.Tags.TagValueIamBinding("binding", new()
    {
        TagValue = @value.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.tags.TagValueIamBinding;
import com.pulumi.gcp.tags.TagValueIamBindingArgs;
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 TagValueIamBinding("binding", TagValueIamBindingArgs.builder()
            .tagValue(value.name())
            .role("roles/viewer")
            .members("user:jane@example.com")
            .build());

    }
}

resources:
  binding:
    type: gcp:tags:TagValueIamBinding
    properties:
      tagValue: ${value.name}
      role: roles/viewer
      members:
        - user:jane@example.com

The TagValueIamBinding resource is authoritative for one role but non-authoritative for the tag value overall. The members array lists all identities that should have this role. Other roles on the tag value remain unchanged.

Add a single member to a role

When you need to grant access to one additional user without changing existing permissions, member resources add individual grants incrementally.

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

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

import pulumi
import pulumi_gcp as gcp

member = gcp.tags.TagValueIamMember("member",
    tag_value=value["name"],
    role="roles/viewer",
    member="user:jane@example.com")

package main

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

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		_, err := tags.NewTagValueIamMember(ctx, "member", &tags.TagValueIamMemberArgs{
			TagValue: pulumi.Any(value.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.Tags.TagValueIamMember("member", new()
    {
        TagValue = @value.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.tags.TagValueIamMember;
import com.pulumi.gcp.tags.TagValueIamMemberArgs;
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 TagValueIamMember("member", TagValueIamMemberArgs.builder()
            .tagValue(value.name())
            .role("roles/viewer")
            .member("user:jane@example.com")
            .build());

    }
}

resources:
  member:
    type: gcp:tags:TagValueIamMember
    properties:
      tagValue: ${value.name}
      role: roles/viewer
      member: user:jane@example.com

The TagValueIamMember resource adds one member to one role. Unlike Binding, it doesn’t manage the complete member list for the role. This is the least disruptive approach when multiple teams manage permissions on the same tag value.

Set time-limited permissions with IAM Conditions

Temporary access grants expire automatically when you use IAM Conditions, useful for contractor access or time-boxed projects.

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"],
        condition: {
            title: "expires_after_2019_12_31",
            description: "Expiring at midnight of 2019-12-31",
            expression: "request.time < timestamp(\"2020-01-01T00:00:00Z\")",
        },
    }],
});
const policy = new gcp.tags.TagValueIamPolicy("policy", {
    tagValue: value.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"],
    "condition": {
        "title": "expires_after_2019_12_31",
        "description": "Expiring at midnight of 2019-12-31",
        "expression": "request.time < timestamp(\"2020-01-01T00:00:00Z\")",
    },
}])
policy = gcp.tags.TagValueIamPolicy("policy",
    tag_value=value["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/tags"
	"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",
					},
					Condition: {
						Title:       "expires_after_2019_12_31",
						Description: pulumi.StringRef("Expiring at midnight of 2019-12-31"),
						Expression:  "request.time < timestamp(\"2020-01-01T00:00:00Z\")",
					},
				},
			},
		}, nil)
		if err != nil {
			return err
		}
		_, err = tags.NewTagValueIamPolicy(ctx, "policy", &tags.TagValueIamPolicyArgs{
			TagValue:   pulumi.Any(value.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",
                },
                Condition = new Gcp.Organizations.Inputs.GetIAMPolicyBindingConditionInputArgs
                {
                    Title = "expires_after_2019_12_31",
                    Description = "Expiring at midnight of 2019-12-31",
                    Expression = "request.time < timestamp(\"2020-01-01T00:00:00Z\")",
                },
            },
        },
    });

    var policy = new Gcp.Tags.TagValueIamPolicy("policy", new()
    {
        TagValue = @value.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.tags.TagValueIamPolicy;
import com.pulumi.gcp.tags.TagValueIamPolicyArgs;
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")
                .condition(GetIAMPolicyBindingConditionArgs.builder()
                    .title("expires_after_2019_12_31")
                    .description("Expiring at midnight of 2019-12-31")
                    .expression("request.time < timestamp(\"2020-01-01T00:00:00Z\")")
                    .build())
                .build())
            .build());

        var policy = new TagValueIamPolicy("policy", TagValueIamPolicyArgs.builder()
            .tagValue(value.name())
            .policyData(admin.policyData())
            .build());

    }
}

resources:
  policy:
    type: gcp:tags:TagValueIamPolicy
    properties:
      tagValue: ${value.name}
      policyData: ${admin.policyData}
variables:
  admin:
    fn::invoke:
      function: gcp:organizations:getIAMPolicy
      arguments:
        bindings:
          - role: roles/viewer
            members:
              - user:jane@example.com
            condition:
              title: expires_after_2019_12_31
              description: Expiring at midnight of 2019-12-31
              expression: request.time < timestamp("2020-01-01T00:00:00Z")

The condition block adds temporal or attribute-based constraints to the permission grant. The expression uses Common Expression Language (CEL) to define when the binding applies. Here, the permission expires at midnight on 2020-01-01. IAM Conditions work with all three resource types but have known limitations documented by Google Cloud.

Beyond these examples

These snippets focus on specific IAM management features: authoritative vs non-authoritative IAM management and IAM Conditions for time-based access. They’re intentionally minimal rather than full access control configurations.

The examples reference pre-existing infrastructure such as tag values created via gcp.tags.TagValue or manually. They focus on configuring IAM permissions rather than provisioning the tag values themselves.

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

Combining Policy with Binding or Member (causes conflicts)
Custom role references (require full path format)
IAM Conditions limitations and edge cases
Mixing Binding and Member for the same role (causes conflicts)

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 TagValueIamPolicy resource reference for all available configuration options.

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Frequently Asked Questions

Resource Selection & Conflicts

Which IAM resource should I use for managing tag value permissions?

Choose based on your needs: gcp.tags.TagValueIamPolicy for full policy control (authoritative, replaces entire policy), gcp.tags.TagValueIamBinding for managing all members of a specific role (authoritative for that role), or gcp.tags.TagValueIamMember for adding individual members without affecting others (non-authoritative).

Can I use TagValueIamPolicy with TagValueIamBinding or TagValueIamMember?

No. gcp.tags.TagValueIamPolicy cannot be used alongside gcp.tags.TagValueIamBinding or gcp.tags.TagValueIamMember because they will conflict over policy control.

Can I combine TagValueIamBinding and TagValueIamMember resources?

Yes, but only if they manage different roles. gcp.tags.TagValueIamBinding and gcp.tags.TagValueIamMember will conflict if they grant privileges to the same role.

IAM Conditions & Advanced Features

How do I add time-based or conditional access to tag values?

Use the condition property with title, description, and expression. For example, to expire access at a specific time: expression: "request.time < timestamp(\"2020-01-01T00:00:00Z\")".

Are there limitations with IAM Conditions?

Yes. IAM Conditions are supported but have known limitations. Review GCP’s IAM Conditions documentation if you encounter issues.

Import & Configuration

What format should I use when importing custom roles?

Use the full custom role name: [projects/my-project|organizations/my-org]/roles/my-custom-role. Short names will fail during import.

Can I change the tagValue after creating the IAM policy?

No. The tagValue property is immutable and cannot be changed after resource creation.

Using a different cloud?

Explore security guides for other cloud providers:

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