# SeaweedFS Admin Interface Web Component Design ## Overview The SeaweedFS Admin Interface is a modern web-based administration interface for SeaweedFS clusters, following the **Gin + Templ + HTMX** architecture pattern. It provides comprehensive cluster management, monitoring, and maintenance capabilities through an intuitive web interface. ## Architecture ### Technology Stack - **Backend Framework**: Gin (Go HTTP web framework) - **Template Engine**: Templ (Type-safe Go templates) - **Frontend Enhancement**: HTMX (Dynamic interactions without JavaScript frameworks) - **CSS Framework**: Bootstrap 5 (Modern responsive design) - **Icons**: Font Awesome 6 (Comprehensive icon library) - **Authentication**: Session-based with configurable credentials ### Directory Structure ``` weed/admin/ ├── admin.go # Main entry point & router setup ├── dash/ # Core admin logic │ ├── admin_server.go # Server struct & cluster operations │ ├── handler_auth.go # Authentication handlers │ ├── handler_admin.go # Main admin handlers │ ├── middleware.go # Authentication middleware │ └── ... # Additional handlers ├── view/ # Template components │ ├── layout/ │ │ └── layout.templ # Base layout & login form │ └── app/ │ ├── admin.templ # Admin page template │ └── template_helpers.go # Formatting utilities ├── static/ # Static assets │ ├── css/ │ │ └── admin.css # Custom styles │ └── js/ │ └── admin.js # Interactive functionality └── templates/ # Embedded templates ``` ## Core Features ### 1. **Cluster Management** #### Topology Visualization - **Data Center/Rack/Node Hierarchy**: Visual representation of cluster topology - **Real-time Status Monitoring**: Live status updates for all cluster components - **Capacity Planning**: Volume utilization and capacity tracking - **Health Assessment**: Automated health scoring and alerts #### Master Node Management - **Leader/Follower Status**: Clear indication of Raft leadership - **Master Configuration**: View and modify master settings - **Cluster Membership**: Add/remove master nodes - **Heartbeat Monitoring**: Track master node availability #### Volume Server Operations - **Server Registration**: Automatic detection of new volume servers - **Disk Usage Monitoring**: Real-time disk space and volume tracking - **Performance Metrics**: I/O statistics and throughput monitoring - **Maintenance Mode**: Graceful server shutdown and maintenance ### 2. **Volume Management** #### Volume Operations - **Volume Creation**: Create new volumes with replication settings - **Volume Listing**: Comprehensive volume inventory with search/filter - **Volume Details**: Detailed information per volume (files, size, replicas) - **Volume Migration**: Move volumes between servers - **Volume Deletion**: Safe volume removal with confirmation #### Storage Operations - **Volume Growing**: Automatic volume expansion based on policies - **Vacuum Operations**: Reclaim deleted file space - **Compaction**: Optimize volume storage efficiency - **Rebalancing**: Distribute volumes evenly across servers ### 3. **File Management** #### File Browser - **Directory Navigation**: Browse filer directories with breadcrumbs - **File Operations**: Upload, download, delete, rename files - **Batch Operations**: Multi-file operations with progress tracking - **Metadata Display**: File attributes, timestamps, permissions - **Search Functionality**: Find files by name, type, or content #### Storage Analytics - **Usage Statistics**: File count, size distribution, growth trends - **Access Patterns**: Popular files and access frequency - **Storage Efficiency**: Compression ratios and duplicate detection ### 4. **Monitoring & Metrics** #### Real-time Dashboards - **System Overview**: Cluster health at a glance - **Performance Metrics**: Throughput, latency, and error rates - **Resource Utilization**: CPU, memory, disk, and network usage - **Historical Trends**: Long-term performance analysis #### Alerting System - **Threshold Monitoring**: Configurable alerts for key metrics - **Health Checks**: Automated health assessment and scoring - **Notification Channels**: Email, webhook, and dashboard notifications ### 5. **Configuration Management** #### Cluster Configuration - **Master Settings**: Replication, security, and operational parameters - **Volume Server Config**: Storage paths, limits, and performance settings - **Filer Configuration**: Metadata storage and caching options - **Security Settings**: Authentication, authorization, and encryption #### Backup & Restore - **Configuration Backup**: Export cluster configuration - **Configuration Restore**: Import and apply saved configurations - **Version Control**: Track configuration changes over time ### 6. **System Maintenance** #### Maintenance Operations - **Garbage Collection**: Clean up orphaned files and metadata - **Volume Repair**: Fix corrupted or inconsistent volumes - **Cluster Validation**: Verify cluster integrity and consistency - **Performance Tuning**: Optimize cluster performance parameters #### Log Management - **Log Aggregation**: Centralized logging from all cluster components - **Log Analysis**: Search, filter, and analyze system logs - **Error Tracking**: Identify and track system errors and warnings - **Log Export**: Download logs for external analysis ## User Interface Design ### Layout Components #### Header Navigation - **Cluster Status Indicator**: Quick health overview - **User Information**: Current user and session details - **Quick Actions**: Frequently used operations - **Search Bar**: Global search across cluster resources #### Sidebar Navigation - **Cluster Section**: Topology, status, and management - **Management Section**: Files, volumes, and operations - **System Section**: Configuration, logs, and maintenance - **Contextual Actions**: Dynamic actions based on current view #### Main Content Area - **Dashboard Cards**: Key metrics and status summaries - **Data Tables**: Sortable, filterable resource listings - **Interactive Charts**: Real-time metrics visualization - **Action Panels**: Operation forms and bulk actions ### Responsive Design - **Mobile Responsive**: Optimized for tablets and mobile devices - **Progressive Enhancement**: Works with JavaScript disabled - **Accessibility**: WCAG 2.1 compliant interface - **Theme Support**: Light/dark mode support ## Security Features ### Authentication & Authorization - **Configurable Authentication**: Optional password protection - **Session Management**: Secure session handling with timeouts - **Role-based Access**: Different permission levels for users - **Audit Logging**: Track all administrative actions ### Security Hardening - **HTTPS Support**: TLS encryption for all communications - **CSRF Protection**: Cross-site request forgery prevention - **Input Validation**: Comprehensive input sanitization - **Rate Limiting**: Prevent abuse and DoS attacks ## API Design ### RESTful Endpoints ```go // Public endpoints GET /health # Health check GET /login # Login form POST /login # Process login GET /logout # Logout // Protected endpoints GET /admin # Main admin interface GET /overview # Cluster overview API // Cluster management GET /cluster # Cluster topology view GET /cluster/topology # Topology data API GET /cluster/status # Cluster status API POST /cluster/grow # Grow volumes POST /cluster/vacuum # Vacuum operation POST /cluster/rebalance # Rebalance cluster // Volume management GET /volumes # Volumes list page GET /volumes/list # Volumes data API GET /volumes/details/:id # Volume details POST /volumes/create # Create volume DELETE /volumes/delete/:id # Delete volume // File management GET /filer # File browser page GET /filer/browser # File browser interface GET /filer/browser/api/* # File operations API POST /filer/upload # File upload DELETE /filer/delete # File deletion // Monitoring GET /metrics # Metrics dashboard GET /metrics/data # Metrics data API GET /metrics/realtime # Real-time metrics GET /logs # Logs viewer GET /logs/download/:type # Download logs // Configuration GET /config # Configuration page GET /config/current # Current configuration POST /config/update # Update configuration GET /config/backup # Backup configuration // Maintenance GET /maintenance # Maintenance page POST /maintenance/gc # Garbage collection POST /maintenance/compact # Volume compaction GET /maintenance/status # Maintenance status ``` ## Development Guidelines ### Code Organization - **Handler Separation**: Separate files for different functional areas - **Type Safety**: Use strongly typed structures for all data - **Error Handling**: Comprehensive error handling and user feedback - **Testing**: Unit and integration tests for all components ### Performance Considerations - **Caching Strategy**: Intelligent caching of cluster topology and metrics - **Lazy Loading**: Load data on demand to improve responsiveness - **Batch Operations**: Efficient bulk operations for large datasets - **Compression**: Gzip compression for API responses ### Monitoring Integration - **Metrics Export**: Prometheus-compatible metrics endpoint - **Health Checks**: Kubernetes-style health and readiness probes - **Distributed Tracing**: OpenTelemetry integration for request tracing - **Structured Logging**: JSON logging for better observability ## Deployment Options ### Standalone Deployment ```bash # Start dashboard server ./weed dashboard -port=9999 \ -masters="master1:9333,master2:9333" \ -filer="filer:8888" \ -adminUser="admin" \ -adminPassword="secretpassword" ``` ### Docker Deployment ```yaml # docker-compose.yml version: '3.8' services: dashboard: image: seaweedfs:latest command: dashboard -port=9999 -masters=master:9333 -filer=filer:8888 ports: - "9999:9999" environment: - ADMIN_USER=admin - ADMIN_PASSWORD=secretpassword ``` ### Kubernetes Deployment ```yaml apiVersion: apps/v1 kind: Deployment metadata: name: seaweedfs-dashboard spec: replicas: 1 selector: matchLabels: app: seaweedfs-dashboard template: metadata: labels: app: seaweedfs-dashboard spec: containers: - name: dashboard image: seaweedfs:latest command: ["weed", "dashboard"] args: - "-port=9999" - "-masters=seaweedfs-master:9333" - "-filer=seaweedfs-filer:8888" ports: - containerPort: 9999 ``` ## Future Enhancements ### Advanced Features - **Multi-cluster Management**: Manage multiple SeaweedFS clusters - **Advanced Analytics**: Machine learning-powered insights - **Custom Dashboards**: User-configurable dashboard layouts - **API Integration**: Webhook integration with external systems ### Enterprise Features - **SSO Integration**: LDAP, OAuth, and SAML authentication - **Advanced RBAC**: Fine-grained permission system - **Audit Compliance**: SOX, HIPAA, and PCI compliance features - **High Availability**: Multi-instance dashboard deployment This design provides a comprehensive, modern, and scalable web interface for SeaweedFS administration, following industry best practices and providing an excellent user experience for cluster operators and administrators.