Add API endpoints to manage ResourceMetadata (ownership, groups, permissions)
for KV resources. This enables administrators to configure granular access
control for stored data.
Changes:
- Add GetResourceMetadataResponse and UpdateResourceMetadataRequest types
- Add GetResourceMetadata and SetResourceMetadata methods to AuthService
- Add GET /kv/{path}/metadata endpoint (requires admin:users:read)
- Add PUT /kv/{path}/metadata endpoint (requires admin:users:update)
- Both endpoints protected by JWT authentication
- Metadata routes registered before general KV routes to prevent pattern conflicts
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Updated bootstrap service to use authenticated HTTP client with cluster auth headers
- Made GET /members/ endpoint unprotected for monitoring/inspection purposes
- All other cluster communication endpoints remain protected by cluster auth middleware
This ensures proper cluster formation while maintaining security for inter-node communication.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Implemented a comprehensive secure authentication mechanism for inter-node
cluster communication with the following features:
1. Global Cluster Secret (GCS)
- Auto-generated cryptographically secure random secret (256-bit)
- Configurable via YAML config file
- Shared across all cluster nodes for authentication
2. Cluster Authentication Middleware
- Validates X-Cluster-Secret and X-Node-ID headers
- Applied to all cluster endpoints (/members/*, /merkle_tree/*, /kv_range)
- Comprehensive logging of authentication attempts
3. Authenticated HTTP Client
- Custom HTTP client with cluster auth headers
- TLS support with configurable certificate verification
- Protocol-aware (http/https based on TLS settings)
4. Secure Bootstrap Endpoint
- New /auth/cluster-bootstrap endpoint
- Protected by JWT authentication with admin scope
- Allows new nodes to securely obtain cluster secret
5. Updated Cluster Communication
- All gossip protocol requests include auth headers
- All Merkle tree sync requests include auth headers
- All data replication requests include auth headers
6. Configuration
- cluster_secret: Shared secret (auto-generated if not provided)
- cluster_tls_enabled: Enable TLS for inter-node communication
- cluster_tls_cert_file: Path to TLS certificate
- cluster_tls_key_file: Path to TLS private key
- cluster_tls_skip_verify: Skip TLS verification (testing only)
This implementation addresses the security vulnerability of unprotected
cluster endpoints and provides a flexible, secure approach to protecting
internal cluster communication while allowing for automated node bootstrapping.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
