<!--
SPDX-FileCopyrightText: Copyright (c) 2025-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
SPDX-License-Identifier: Apache-2.0

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->

{{ template "chart.header" . }}

{{ template "chart.description" . }}

{{ template "chart.versionBadge" . }}{{ template "chart.typeBadge" . }}{{ template "chart.appVersionBadge" . }}

## 🚀 Overview

The Dynamo Platform Helm chart deploys the complete Dynamo Kubernetes Platform infrastructure on Kubernetes, including:

- **Dynamo Operator**: Kubernetes operator for managing Dynamo deployments
- **NATS**: High-performance messaging system for component communication
- **etcd**: Distributed key-value store for operator state management
- **Grove**: Multi-node inference orchestration (optional)
- **Kai Scheduler**: Advanced workload scheduling (optional)

## 📋 Prerequisites

- Kubernetes cluster (v1.20+)
- Helm 3.8+
- Sufficient cluster resources for your deployment scale
- Container registry access (if using private images)

## ⚠️ Important: Cluster-Wide vs Namespace-Scoped Deployment

### Single Cluster-Wide Operator (Recommended)

**By default, the Dynamo operator runs with cluster-wide permissions and should only be deployed ONCE per cluster.**

- ✅ **Recommended**: Deploy one cluster-wide operator per cluster
- ❌ **Not Recommended**: Multiple cluster-wide operators in the same cluster

### Multiple Namespace-Scoped Operators (Advanced)

If you need multiple operator instances (e.g., for multi-tenancy), use namespace-scoped deployment:

```yaml
# values.yaml
dynamo-operator:
  namespaceRestriction:
    enabled: true
    targetNamespace: "my-tenant-namespace"  # Optional, defaults to release namespace
```

### Validation and Safety

The chart includes built-in validation to prevent all operator conflicts:

- **Automatic Detection**: Scans for existing operators (both cluster-wide and namespace-restricted) during installation
- **Prevents Multiple Cluster-Wide**: Installation will fail if another cluster-wide operator exists
- **Prevents Mixed Deployments (Type 1)**: Installation will fail if trying to install namespace-restricted operator when cluster-wide exists
- **Prevents Mixed Deployments (Type 2)**: Installation will fail if trying to install cluster-wide operator when namespace-restricted operators exist
- **Safe Defaults**: Leader election uses shared ID for proper coordination

#### 🚫 **Blocked Conflict Scenarios**

| Existing Operator | New Operator | Status | Reason |
|-------------------|--------------|---------|--------|
| None | Cluster-wide | ✅ **Allowed** | No conflicts |
| None | Namespace-restricted | ✅ **Allowed** | No conflicts |
| Cluster-wide | Cluster-wide | ❌ **Blocked** | Multiple cluster managers |
| Cluster-wide | Namespace-restricted | ❌ **Blocked** | Cluster-wide already manages target namespace |
| Namespace-restricted | Cluster-wide | ❌ **Blocked** | Would conflict with existing namespace operators |
| Namespace-restricted A | Namespace-restricted B (diff ns) | ✅ **Allowed** | Different scopes |

## 🔧 Configuration

{{ template "chart.requirementsSection" . }}

{{ template "chart.valuesSection" . }}

### NATS Configuration

For detailed NATS configuration options beyond `nats.enabled`, please refer to the official NATS Helm chart documentation:
**[NATS Helm Chart Documentation](https://github.com/nats-io/k8s/tree/main/helm/charts/nats)**

### etcd Configuration

For detailed etcd configuration options beyond `etcd.enabled`, please refer to the official Bitnami etcd Helm chart documentation:
**[etcd Helm Chart Documentation](https://github.com/bitnami/charts/tree/main/bitnami/etcd)**


## 📚 Additional Resources

- [Dynamo Cloud Deployment Installation Guide](../../../../docs/pages/kubernetes/installation-guide.md)
- [NATS Documentation](https://docs.nats.io/)
- [etcd Documentation](https://etcd.io/docs/)
- [Kubernetes Operator Pattern](https://kubernetes.io/docs/concepts/extend-kubernetes/operator/)

{{ template "helm-docs.versionFooter" . }}
