Harp Nextcloud (2026)

Before HaRP, administrators often relied on connecting AppAPI to the Docker Socket directly ( Docker Socket Proxy ). While functional, this approach carries higher security risks. Legacy Daemon (Socket Proxy) Modern Daemon (HaRP) Lower (Exposes Docker Socket) High (Outbound Tunneling) Firewall Requires open ports No ports needed for apps Performance Ideal Use Testing/Small labs Production / AIO How to Set Up HaRP with Nextcloud

Administrators have multiple pathways to roll out HaRP based on their underlying environment infrastructure. 1. Nextcloud All-in-One (AIO) Setup

If you use a reverse proxy (like Nginx or Caddy) in front of AIO, ensure that the /exapps/ path is correctly handled. Conclusion

| Parameter | Explanation | | :--- | :--- | | HP_SHARED_KEY | A strong, secret password used for internal authentication. | | NC_INSTANCE_URL | The full URL of your Nextcloud instance (e.g., https://cloud.example.com ). | | -v /var/run/docker.sock | Mounts the Docker socket so HaRP can manage ExApp containers. | | -p 8780:8780 | Exposes the HTTP frontend for ExApps on port 8780. | | -p 8782:8782 | Exposes the FRP (Fast Reverse Proxy) frontend on port 8782 for internal ExApp communication. | harp nextcloud

Let’s break down what each part does:

HaRP is designed to be highly flexible and can be installed alongside Nextcloud or on a separate host. Typical Deployment Steps

For high-performance needs (e.g., using GPUs for AI), HaRP allows for a remote host configuration. The ExApps run on the remote machine, while the HaRP container manages the communication. | | NC_INSTANCE_URL | The full URL of

The Bridge connected the silent, frozen Paris instance (read-only, a historical artifact) with the wild, chaotic Reykjavik instance (read-write, alive). She then patched the to allow the new, low-bandwidth, peer-to-peer sharing.

| Feature | Docker Socket Proxy (Legacy) | HaRP (Recommended) | | :--- | :--- | :--- | | | Client → Nextcloud → ExApp | Client → HaRP → ExApp | | Performance | Higher latency, indirect routing | Lower latency, direct routing | | WebSocket Support | Not supported | Fully supported | | Resource Usage | Puts load on Nextcloud server | Offloads traffic, saving resources | | Future Status | On a path to deprecation | The recommended proxy for Nextcloud 32+ |

However, for these apps to perform optimally, efficient and secure communication between the main Nextcloud instance and the ExApp containers is crucial. Enter (Nextcloud AppAPI HaProxy Reverse Proxy), a high-performance reverse proxy system designed to supercharge your Nextcloud deployment. indirect routing | Lower latency

Enter —a specialized deployment architecture designed to make Nextcloud highly available, resilient, and performant. What is the HARP Architecture?

Depending on how your broader infrastructure is managed, HaRP supports three standard design patterns: 1. Unified Single Host (Nextcloud & HaRP via Docker)