Add FrontendVPCs support to NodeBalancers by komer3 · Pull Request #857 · linode/linodego

komer3 · 2025-12-01T20:32:16Z

Add FrontendAddressType and FrontendVPCSubnetID fields to NodeBalancer struct
Add FrontendVPCs field to NodeBalancerCreateOptions struct
Add clarifying comment to IPv4RangeAutoAssign field in NodeBalancerVPCOptions

📝 Description

What does this PR do and why is this change necessary?

✔️ How to Test

What are the steps to reproduce the issue or verify the changes?

How do I run the relevant unit/integration tests?

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- Add `FrontendAddressType` and `FrontendVPCSubnetID` fields to `NodeBalancer` struct - Add `FrontendVPCs` field to `NodeBalancerCreateOptions` struct - Add clarifying comment to `IPv4RangeAutoAssign` field in `NodeBalancerVPCOptions`

Copilot

Pull request overview

This PR adds support for frontend VPC configuration to NodeBalancers, enabling VPC-based frontend addressing alongside the existing backend VPC support. The changes introduce new fields to track frontend VPC subnet information and allow frontend VPC specification during NodeBalancer creation.

Key changes:

Added FrontendAddressType and FrontendVPCSubnetID fields to track frontend VPC configuration
Added FrontendVPCs option to enable frontend VPC specification during creation
Clarified that IPv4RangeAutoAssign applies only to backend VPC configuration

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nodebalancer.go

zliang-akamai · 2026-01-10T06:44:32Z

nodebalancer.go

 	FrontendAddressType *string `json:"frontend_address_type,omitempty"`
 	// Frontend VPC subnet ID when using VPC addressing
 	FrontendVPCSubnetID *int `json:"frontend_vpc_subnet_id,omitempty"`


If they are not nullable, can we have them as non-pointer types?

errors.go

zliang-akamai · 2026-01-10T06:47:35Z

nodebalancer.go

 	SubnetID  int    `json:"subnet_id"`
 	// IPv4RangeAutoAssign is only used for backend VPC configuration.
 	// For frontend VPCs, this field is ignored.
 	IPv4RangeAutoAssign bool `json:"ipv4_range_auto_assign,omitempty"`


Couldn't find this attribute in the API spec doc. Is the doc outdated?

That field was part of backend VPC support for NB!

zliang-akamai · 2026-01-10T06:48:00Z

nodebalancer.go

If these fields are optional, can we have them as pointer types?

Yeah, makes sense to me!

Copilot

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

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Copilot · 2026-01-20T21:57:16Z

nodebalancer.go

 	IPv4 *string `json:"ipv4"`
 	// This NodeBalancer's public IPv6 address.
 	IPv6 *string `json:"ipv6"`
+	// Frontend address type (Either "vpc" or "public")


Comment should start with the field name for consistency with Go documentation conventions. Should be: 'FrontendAddressType is the frontend address type (either "vpc" or "public")'.

Suggested change

// Frontend address type (Either "vpc" or "public")

// FrontendAddressType is the frontend address type (either "vpc" or "public").

Copilot · 2026-01-20T21:57:16Z

nodebalancer.go

 	IPv6 *string `json:"ipv6"`
+	// Frontend address type (Either "vpc" or "public")
+	FrontendAddressType *string `json:"frontend_address_type,omitempty"`
+	// Frontend VPC subnet ID when using VPC addressing


Comment should start with the field name for consistency with Go documentation conventions. Should be: 'FrontendVPCSubnetID is the VPC subnet ID when using VPC addressing for the frontend'.

Suggested change

// Frontend VPC subnet ID when using VPC addressing

// FrontendVPCSubnetID is the VPC subnet ID when using VPC addressing for the frontend

Copilot · 2026-01-20T21:57:17Z

nodebalancer.go

+	IPv4Range *string `json:"ipv4_range,omitempty"`
+	IPv6Range *string `json:"ipv6_range,omitempty"`
+	SubnetID  int     `json:"subnet_id"`


Changing IPv4Range and IPv6Range from string to *string is a breaking API change that could affect existing users of this struct. Consider the impact on backwards compatibility.

Suggested change

IPv4Range *string `json:"ipv4_range,omitempty"`

IPv6Range *string `json:"ipv6_range,omitempty"`

SubnetID int `json:"subnet_id"`

IPv4Range string `json:"ipv4_range,omitempty"`

IPv6Range string `json:"ipv6_range,omitempty"`

SubnetID int `json:"subnet_id"`

Add FrontendVPCs support to NodeBalancer structs

852faf5

- Add `FrontendAddressType` and `FrontendVPCSubnetID` fields to `NodeBalancer` struct - Add `FrontendVPCs` field to `NodeBalancerCreateOptions` struct - Add clarifying comment to `IPv4RangeAutoAssign` field in `NodeBalancerVPCOptions`

komer3 marked this pull request as ready for review December 15, 2025 20:56

komer3 requested a review from a team as a code owner December 15, 2025 20:56

komer3 requested review from Copilot, yec-akamai and zliang-akamai and removed request for a team December 15, 2025 20:56

Copilot AI reviewed Dec 15, 2025

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komer3 mentioned this pull request Dec 15, 2025

[feat] Add frontend VPC support for NodeBalancers linode/linode-cloud-controller-manager#501

Merged

10 tasks

Merge branch 'main' into nb-frontend-vpc

ba8bc59

AshleyDumaine reviewed Dec 16, 2025

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komer3 and others added 3 commits January 8, 2026 16:14

Merge branch 'linode:main' into nb-frontend-vpc

e53356c

fix lint issue

d95d8e4

update comment

a9a67d6

yec-akamai changed the base branch from main to proj/frontend-vpcs January 9, 2026 19:38

zliang-akamai force-pushed the proj/frontend-vpcs branch from fb0a239 to 8a0a88c Compare January 10, 2026 06:27

zliang-akamai reviewed Jan 10, 2026

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Change NodeBalancerVPCOptions IPv4Range and IPv6Range fields to pointers

6cbd83f

zliang-akamai requested review from Copilot and zliang-akamai January 20, 2026 21:56

Copilot AI reviewed Jan 20, 2026

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	// Frontend address type (Either "vpc" or "public")
	// FrontendAddressType is the frontend address type (either "vpc" or "public").

	// Frontend VPC subnet ID when using VPC addressing
	// FrontendVPCSubnetID is the VPC subnet ID when using VPC addressing for the frontend

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komer3 commented Dec 1, 2025

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