objectstorage

@lossless.zone/objectstorage

🚀 S3-compatible object storage server with clustering, erasure coding, and a slick management UI — powered by smartstorage.

objectstorage gives you a fully featured, self-hosted S3-compatible storage server with a beautiful web-based management interface — all in a single Docker image. No Java, no bloat, no fuss.

Built on Deno for the backend and @design.estate/dees-catalog for a polished UI, it speaks the S3 protocol out of the box while adding powerful management features on top. Scale from a single node to a distributed cluster with erasure coding and multi-drive support.

Issue Reporting and Security

For reporting bugs, issues, or security vulnerabilities, please visit community.foss.global/. This is the central community hub for all issue reporting. Developers who sign and comply with our contribution agreement and go through identification can also get a code.foss.global/ account to submit Pull Requests directly.

✨ Features

• Full S3 API compatibility — Works with any S3 client, SDK, or tool (AWS CLI, boto3, etc.)
• 🔗 Cluster mode — Distribute storage across multiple nodes with QUIC transport, automatic discovery, and quorum writes/reads
• 🛡️ Erasure coding — Reed-Solomon erasure coding (default 4+2) for data durability with minimal overhead
• 💾 Multi-drive support — Stripe data across multiple disks per node with per-drive health monitoring
• 🔄 Self-healing — Background scanner detects and reconstructs missing or corrupt shards automatically
• Management UI — Web dashboard for buckets, objects, policies, credentials, cluster config, and storage drives
• Finder-style object browser — Column view with file preview, drag-and-drop upload, move/rename, context menus
• Inline code editing — Built-in Monaco editor with syntax highlighting and save-back-to-storage
• PDF viewer — Render PDFs inline with page navigation, zoom, and thumbnails
• Named policy management — Create reusable IAM-style policies, attach them to multiple buckets
• Credential management — Add/remove access keys through the UI with live-reload
• Single Docker image — Multi-arch (amd64 + arm64), tiny Alpine-based image
• Fast — Rust-powered storage engine via smartstorage, streaming I/O with zero-copy and backpressure
• Secure by default — JWT-based admin auth, S3 SigV4 authentication, bucket policies
• 🌙 Dark theme — Automatic dark mode following your system preference

⚡ Quick Start

Docker (recommended)

Then open http://localhost:3000 for the management UI and use http://localhost:9000 as your S3 endpoint.

Deno (development)

⚙️ Configuration

objectstorage is configured through environment variables, CLI flags, or programmatic config. Environment variables take precedence over CLI flags.

Server Environment Variables

Variable	Description	Default
OBJST_PORT	Storage API port	9000
UI_PORT	Management UI port	3000
OBJST_STORAGE_DIR	Data storage directory	/data
OBJST_ACCESS_KEY	Access key ID	admin
OBJST_SECRET_KEY	Secret access key	admin
OBJST_ADMIN_PASSWORD	Admin UI password	admin
OBJST_REGION	Storage region identifier	us-east-1

Cluster Environment Variables

Variable	Description	Default
OBJST_CLUSTER_ENABLED	Enable cluster mode (true/false)	false
OBJST_CLUSTER_NODE_ID	Unique node identifier	auto-generated
OBJST_CLUSTER_QUIC_PORT	QUIC transport port	4433
OBJST_CLUSTER_SEED_NODES	Comma-separated seed node addresses	(empty)
OBJST_DRIVE_PATHS	Comma-separated drive mount paths	storage dir
OBJST_ERASURE_DATA_SHARDS	Erasure coding data shards	4
OBJST_ERASURE_PARITY_SHARDS	Erasure coding parity shards	2
OBJST_ERASURE_CHUNK_SIZE	Erasure chunk size in bytes	4194304 (4 MB)
OBJST_HEARTBEAT_INTERVAL_MS	Cluster heartbeat interval	5000
OBJST_HEARTBEAT_TIMEOUT_MS	Cluster heartbeat timeout	30000

CLI Flags

🔗 Cluster Mode

objectstorage supports distributed storage across multiple nodes with automatic failover and data redundancy.

How it works

1. Enable clustering on each node with OBJST_CLUSTER_ENABLED=true
2. Point nodes at each other using OBJST_CLUSTER_SEED_NODES — nodes discover the full cluster from any seed
3. Configure drives per node with OBJST_DRIVE_PATHS — each drive is independently managed
4. Erasure coding splits objects into data + parity shards across drives and nodes

Example: 3-node cluster

Erasure coding presets

Config	Data Shards	Parity Shards	Overhead	Fault Tolerance
Default	4	2	50%	2 failures
High durability	6	3	50%	3 failures
Minimal	2	1	50%	1 failure

Inter-node transport

Cluster communication uses QUIC (UDP port 4433 by default) with:

• Auto-generated TLS certificates
• Multiplexed streams with flow-control backpressure
• Heartbeat-based failure detection (default: 5s interval, 30s timeout)

🖥️ Management UI

The web-based management UI is served on the UI port (default: 3000). Log in with username admin and the configured admin password.

Overview

Dashboard showing server status, uptime, storage usage, bucket count, and connection info.

Buckets

Create/delete buckets. View object counts and sizes. Attach/detach named policies per bucket.

Browser

Finder-style column browser for objects. Upload, download, preview, move, rename, and delete files and folders — with syntax-highlighted code preview.

Right-click any item for quick actions:

Inline Code Editing

Click Edit on any text file to open the built-in Monaco editor with syntax highlighting, language detection, and save-back-to-storage.

PDF Viewer

PDF files render inline with a full-featured viewer — page navigation, zoom, fit-to-page, thumbnails, download, and print.

Policies

Create reusable named policies with IAM-style S3 statements. Attach policies to multiple buckets at once.

Attaching Policies to Buckets

From the Buckets view, click the policy icon on any bucket to see attached and available policies. Attach or detach with one click.

Access Keys

Add and remove access credentials. Secret keys are masked. Changes take effect immediately — no server restart needed.

Adding Access Keys

Click "Add Key" to create new access credentials. They're immediately available for API authentication.

Configuration

View your server's current configuration at a glance — ports, region, storage directory, auth/CORS status, cluster configuration, erasure coding settings, and storage drive paths. The config view also includes an environment variable reference guide for cluster setup.

Dark Theme

Full dark theme support — automatically follows your system preference via prefers-color-scheme.

📋 Named Policy System

objectstorage adds a named policy abstraction on top of standard S3 bucket policies. Instead of editing raw JSON per bucket, you define reusable policy templates and attach them to any number of buckets.

How it works

1. Create a named policy in the Policies view — give it a name, description, and S3 policy statements
2. Attach it to buckets — from the Policies view or the Buckets view
3. objectstorage merges all attached policy statements into a single S3 policy document and applies it to the bucket automatically

${bucket} placeholder

Use ${bucket} in your policy's Resource ARN and it will be replaced with the actual bucket name when applied:

This lets one policy like "Public Read" work across many buckets without hardcoding names.

Lifecycle

• Updating a policy automatically recomputes and re-applies the merged S3 policy on all attached buckets
• Deleting a policy detaches it from all buckets and recomputes each
• Deleting a bucket cleans up its policy attachments automatically

🔌 S3 API Usage

Use any S3-compatible client to interact with the storage. Here are some examples:

AWS CLI

Node.js / TypeScript (AWS SDK v3)

Python (boto3)

🐳 Docker

Build

Docker Compose (standalone)

Docker Compose (3-node cluster)

Image Details

• Base: alpine:edge with Deno runtime
• Architectures: linux/amd64, linux/arm64
• Size: ~150 MB compressed
• Init system: tini for proper signal handling
• Exposed ports: 9000 (S3), 3000 (UI), 4433 (QUIC cluster transport)
• Volume: /data — all bucket data and config persisted here

🏗️ Architecture

Tech Stack

Layer	Technology
Storage Engine	@push.rocks/smartstorage (Rust binary via ruststorage)
Cluster Transport	QUIC via quinn (auto-TLS, multiplexed streams, backpressure)
Erasure Coding	Reed-Solomon (configurable data + parity shards)
Runtime	Deno
Management API	@api.global/typedrequest + @api.global/typedserver
Auth	JWT via @push.rocks/smartjwt, S3 SigV4
Frontend	@design.estate/dees-element (LitElement) + @design.estate/dees-catalog
Frontend Build	esbuild via @git.zone/tsbundle
Docker	Multi-stage (Node.js build → Alpine + Deno runtime)

🛠️ Development

License and Legal Information

This repository contains open-source code licensed under the MIT License. A copy of the license can be found in the license file.

Please note: The MIT License does not grant permission to use the trade names, trademarks, service marks, or product names of the project, except as required for reasonable and customary use in describing the origin of the work and reproducing the content of the NOTICE file.

Trademarks

This project is owned and maintained by Task Venture Capital GmbH. The names and logos associated with Task Venture Capital GmbH and any related products or services are trademarks of Task Venture Capital GmbH or third parties, and are not included within the scope of the MIT license granted herein.

Use of these trademarks must comply with Task Venture Capital GmbH's Trademark Guidelines or the guidelines of the respective third-party owners, and any usage must be approved in writing. Third-party trademarks used herein are the property of their respective owners and used only in a descriptive manner, e.g. for an implementation of an API or similar.

Company Information

Task Venture Capital GmbH Registered at District Court Bremen HRB 35230 HB, Germany

For any legal inquiries or further information, please contact us via email at hello@task.vc.

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