> ## Documentation Index
> Fetch the complete documentation index at: https://odigos-cursor-browser-instrumentation-security-2830.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Prerequisites

> Requirements for installing Odigos Central, including Kubernetes version, license token, and network connectivity.

Before installing Odigos Central, ensure you have:

* **Kubernetes** version 1.19.0 or higher
* **Odigos Enterprise license token** (contact Odigos team to obtain)
* **Helm** 3.x (if using Helm installation method)
* **Network connectivity** from remote clusters to the Central Backend endpoint

## Network Requirements

In production, users typically reach a **single hostname** (ingress) that path-routes to Central UI and Central Backend. See [Authentication](/central/authentication#production-ingress-configuration) for the full path table.

Ensure the following network connectivity:

| Source                                              | Destination                        | Port / path                            | Protocol                                                                |
| --------------------------------------------------- | ---------------------------------- | -------------------------------------- | ----------------------------------------------------------------------- |
| Users (browser)                                     | Ingress hostname → Central UI      | 443 (UI on 3000 behind ingress)        | HTTPS                                                                   |
| Users (browser)                                     | Ingress hostname → Central Backend | 443: `/graphql`, `/api/*`, `/realms/*` | HTTPS                                                                   |
| Central UI                                          | Central Backend                    | 8081                                   | HTTP (in-cluster)                                                       |
| Central Backend                                     | Redis                              | 6379                                   | TCP                                                                     |
| Central Backend                                     | Keycloak                           | 8080                                   | HTTP (in-cluster)                                                       |
| Keycloak                                            | Identity provider (e.g. Azure)     | 443                                    | HTTPS (`login.microsoftonline.com`, `graph.microsoft.com` for Entra ID) |
| Remote cluster proxies, VM agents, cloud connectors | Central Backend                    | 443: `/ws/proxy`                       | WebSocket (`wss` when the URL host ends with `:443`)                    |

<Warning>
  Odigos Central is an Enterprise feature and requires a valid license token.
  Make sure your `--onprem-token` is valid and has the necessary permissions.
</Warning>