# Sealos — Cloud Operating System for Kubernetes

> Sealos is a Kubernetes-based cloud operating system that unifies app deployment, managed databases, and AI workloads behind a browser-based desktop interface.

## Install

Save as a script file and run:

# Sealos — Cloud Operating System for Kubernetes

## Quick Use
```bash
curl -sfL https://raw.githubusercontent.com/labring/sealos/main/scripts/install.sh | sh -s
sealos run labring/kubernetes:v1.28.0 labring/helm:v3.14.0 labring/calico:v3.27.0
```

## Introduction
Sealos turns any set of Linux machines into a fully managed cloud platform powered by Kubernetes. It provides a browser-based desktop where teams deploy applications, provision databases, and run AI workloads without writing YAML or understanding Kubernetes internals.

## What Sealos Does
- Bootstraps production-grade Kubernetes clusters with a single command
- Provides a graphical app store for one-click deployment of databases, middleware, and tools
- Offers built-in managed database support for MySQL, PostgreSQL, MongoDB, and Redis
- Includes a cloud-native IDE for developing directly inside the cluster
- Supports multi-tenant resource isolation with metering and billing

## Architecture Overview
Sealos runs as a set of controllers and CRDs on top of a standard Kubernetes cluster. The desktop frontend communicates with a central API server that manages user namespaces, application lifecycle, and resource quotas. Cluster images (OCI-compatible archives containing Kubernetes distributions and add-ons) are pulled from a registry and applied declaratively to bootstrap or upgrade clusters.

## Self-Hosting & Configuration
- Requires Linux nodes with systemd; supports x86_64 and ARM64
- Install the sealos CLI, then run `sealos run` with the desired cluster image
- Configure HA by specifying multiple master nodes via `--masters` flag
- Persistent storage is handled via local-path or CSI drivers included in cluster images
- Access the desktop UI on port 443 after deployment; configure TLS via Ingress or built-in gateway

## Key Features
- Single-binary cluster bootstrap that packages Kubernetes, CNI, and CSI together
- Browser-based desktop experience with drag-and-drop app management
- Built-in database-as-a-service with automated backups and scaling
- Multi-tenant isolation with per-namespace resource metering
- OCI-based cluster image format for reproducible, versioned infrastructure

## Comparison with Similar Tools
- **Rancher** — Full cluster management UI but does not provide a desktop-like app platform experience
- **KubeSphere** — Similar multi-tenant console; Sealos focuses more on the cloud OS abstraction
- **k3s** — Lightweight distribution only; Sealos adds the platform layer on top
- **Portainer** — Container management UI without Kubernetes-native database-as-a-service

## FAQ
**Q: Does Sealos require an existing Kubernetes cluster?**
A: No. Sealos bootstraps a complete cluster from bare Linux machines using its cluster image system.

**Q: Can I run Sealos on a single node for development?**
A: Yes. A single-node setup works for testing; add nodes later with `sealos add --nodes`.

**Q: What databases can Sealos manage out of the box?**
A: MySQL, PostgreSQL, MongoDB, and Redis are supported through built-in operators.

**Q: Is Sealos free to self-host?**
A: Yes. The core platform is open source under Apache 2.0.

## Sources
- https://github.com/labring/sealos
- https://sealos.io/docs

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Source: https://tokrepo.com/en/workflows/8d964216-3ade-11f1-9bc6-00163e2b0d79
Author: Script Depot