open-consul/website/content/docs/release-notes/consul-api-gateway/v0_3_x.mdx

---
layout: docs
page_title: 0.3.x
description: >-
  Consul API Gateway release notes for version 0.3.x
---

# Consul API Gateway 0.3.0

## Release Highlights

- **Improved High Availability and Scalability via Multiple Instances per Gateway:**
  This release introduces support for deploying multiple instances of a logical
  gateway (i.e. a K8s `gateway` config object). You can use an external load
  balancing service to distribute incoming traffic across the instances of a
  gateway. This provides higher availability of gateway services and also allows
  a single logical gateway to handle a volume of network traffic that is much
  greater than what a single instance of a gateway can.

  Administrators can set the number of instances independently for each logical
  gateway. Administrators can also set, in the `gatewayClassConfig`, the
  minimum, maximum and default number of gateway instances. These are applied
  per `gateway` to all `gateways` in that `gatewayClass`. The minimum and
  maximum settings will override settings configured on any given `gateway`.

  ~> **Note:** There is a hard limit of eight (8) instances per `gateway` and it can
  not be overridden. This hard limit will probably be increased in the future.

- **Cross Namespace Reference Policies for Certificates:**
  Reference policies is a security feature introduced in the 0.2 release. In
  this release, Reference Policies are now required for TLS certificates when a
  `listener` has a `certificateRef` that is in a different `namespace`.

## Supported Software

- Consul 1.11.2+
- HashiCorp Consul Helm chart 0.45.0+
- Kubernetes 1.21+
  - Kubernetes 1.24 is not supported at this time.
- Kubectl 1.21+
- Envoy proxy support is determined by the Consul version deployed. Refer to
  [Envoy Integration](/docs/connect/proxies/envoy) for details.

## Kubernetes Gateway API Specification

Supported version of the [Gateway API](https://gateway-api.sigs.k8s.io/) spec: `v1alpha2`(v0.4.1)

## Upgrading

For detailed information on upgrading, please refer to the [upgrade details page](/docs/api-gateway/upgrade-specific-versions)

## Changelogs

The changelogs for this major release version and any maintenance versions are listed below.

~> **Note:** The following link will take you to the changelogs on the GitHub website.

- [0.3.0](https://github.com/hashicorp/consul-api-gateway/releases/tag/v0.3.0)