open-consul/website/content/docs/api-gateway/tech-specs.mdx

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---
layout: docs
page_title: Consul API Gateway Technical Specifications
description: >-
This topic describes technical specifications for Consul API Gateway.
---
# Technical Specifications
This topic describes the technical specifications associated with using Consul API Gateway.
## Requirements
Verify that your environment meets the following requirements prior to using Consul API Gateway.
### Datacenter Requirements
Your datacenter must meet the following requirements prior to configuring the Consul API Gateway:
- Kubernetes 1.21+
- `kubectl` 1.21+
- Consul 1.11.2+
- HashiCorp Consul Helm chart 0.43.0+
- Consul Service Mesh must be deployed on the Kubernetes cluster that API Gateway is deployed on.
- Envoy: Envoy proxy support is determined by the Consul version deployed. Refer to [Envoy Integration](/docs/connect/proxies/envoy) for details.
### TCP Port Requirements
The following table describes the TCP port requirements for each component of the API Gateway.
| Port | Description | Component |
| ---- | ----------- | --------- |
| 9090 | Secret discovery service (SDS) | Gateway controller pod <br/> Gateway instance pod |
| 20000 | Kubernetes readiness probe | Gateway instance pod |
| Configurable | Port for scraping Prometheus metrics. Disabled by default. | Gateway controller pod |
## Consul Server Deployments
- Consul Editions supported: OSS and Enterprise
- Supported Consul Server deployment types:
- Self-Managed
- HCP Consul
## Deployment Environments
Consul API Gateway can be deployed in the following Kubernetes-based environments:
- Generic Kubernetes
- AWS Elastic Kubernetes Service (EKS)
- Google Kubernetes Engine (GKE)
- Azure Kubernetes Service (AKS)
## Kubernetes Gateway API Specification - Supported Versions
See the Release Notes for the version of Consul API Gateway being used.
## Resource Allocations
The following resources are allocated for each component of the API Gateway.
### Gateway Controller Pod
- **CPU**: None. Either the namespace or cluster default is allocated, depending on the Kubernetes cluster configuration.
- **Memory**: None. Either the the namespace or cluster default is allocated, depending on the Kubernetes cluster configuration.
### Gateway Instance Pod
- **CPU**: None. Either the namespace or cluster default is allocated, depending on the Kubernetes cluster configuration.
- **Memory**: None. Either the namespace or cluster default is allocated, depending on the Kubernetes cluster configuration.