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mcp-nextcloud/charts/nextcloud-mcp-server/dashboards/README.md
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Chris CoutinhoandClaude 4ea5ed72d4 feat: Add Grafana dashboard and vector sync metric instrumentation 
Implement comprehensive observability for vector database synchronization
with Grafana dashboard and Prometheus metrics.

## Part 1: Grafana Dashboard

Created all-in-one operations dashboard with 7 rows and 34 panels:

### Dashboard Structure:
- **Overview Row**: Request rate, error rate, P95 latency, active requests
- **HTTP Metrics (RED)**: Request/error rates by endpoint, latency percentiles
- **MCP Tools**: Call volume, error rates, execution duration by tool
- **Nextcloud API**: API calls/latency by app, retry patterns
- **OAuth & Authentication**: Token validations, exchanges, cache hit rate
- **Dependencies & Health**: Status for Nextcloud/Qdrant/Keycloak/Unstructured
- **Vector Sync**: Processing throughput, queue depth, Qdrant operations

### Helm Chart Integration:
- Added dashboard-configmap.yaml template for automatic provisioning
- Configured Grafana sidecar auto-discovery (label: grafana_dashboard="1")
- Added dashboards configuration section in values.yaml (opt-in)
- Updated Chart.yaml with dashboard annotations
- Enhanced NOTES.txt with dashboard deployment instructions
- Comprehensive documentation in dashboards/README.md

Dashboard supports dynamic filtering via variables:
- datasource: Prometheus data source selection
- namespace: Filter by Kubernetes namespace
- pod: Multi-select pod filtering
- interval: Query interval (1m/5m/10m/30m/1h)

## Part 2: Vector Sync Metric Instrumentation

Implemented metric recording throughout vector sync pipeline:

### metrics.py:
Added convenience functions:
- record_vector_sync_scan() - Track documents per scan
- record_vector_sync_processing() - Track processing duration/status
- record_qdrant_operation() - Track database operations
- update_vector_sync_queue_size() - Track queue depth

### scanner.py:
- Record number of documents found in each scan
- Enables monitoring of scan throughput

### processor.py:
- Record processing duration for each document
- Track success/failure status with timing
- Record Qdrant upsert/delete operations
- Handle all code paths (success, deletion, error)

### semantic.py:
- Wrap Qdrant query_points with try/except
- Record search operation success/failure

## Metrics Exposed:

- mcp_vector_sync_documents_scanned_total
- mcp_vector_sync_documents_processed_total{status}
- mcp_vector_sync_processing_duration_seconds (histogram)
- mcp_vector_sync_queue_size (gauge)
- mcp_qdrant_operations_total{operation,status}

This enables monitoring of:
- Scan and processing throughput
- Processing latency (P50/P95/P99)
- Error rates for processing and Qdrant operations
- Queue depth trends
- Complete observability of vector sync pipeline

## Testing:

Verified locally that metrics are recorded correctly:
- 36 documents scanned
- 3 documents processed (avg 7.5s each)
- 3 successful Qdrant upsert operations
- Search operations tracked

## Deployment:

Enable dashboard provisioning in Helm values:
```yaml
dashboards:
  enabled: true
  grafanaFolder: "Nextcloud MCP"
```

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-11-13 11:49:20 +01:00

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# Grafana Dashboards
This directory contains example Grafana dashboards for monitoring the Nextcloud MCP Server.
## Dashboards
### nextcloud-mcp-server.json
All-in-one Operations Dashboard with comprehensive monitoring across all system components.
#### Overview Row
High-level metrics for quick health assessment:
- **Request Rate** (stat): Total requests per second
- **Error Rate** (stat): Percentage of 5xx errors with color thresholds
- **P95 Latency** (stat): 95th percentile request latency
- **Active Requests** (stat): Current in-flight requests
#### HTTP Metrics (RED Pattern)
Core request/error/duration metrics:
- **Request Rate by Endpoint** (timeseries): RPS breakdown by endpoint
- **Error Rate by Status Code** (timeseries): Error rates for 4xx/5xx codes
- **Latency Percentiles** (timeseries): P50, P95, P99 latency trends
- **Status Code Distribution** (piechart): Percentage breakdown of all status codes
#### MCP Tools Row
MCP-specific tool performance:
- **Top Tools by Call Volume** (bargauge): Top 10 most-called tools
- **Tool Error Rate** (timeseries): Error rates per tool
- **Tool Execution Duration** (timeseries): P95 latency by tool
#### Nextcloud API Row
Backend API performance metrics:
- **API Calls by App** (timeseries): Request rate per Nextcloud app (notes, calendar, contacts, etc.)
- **API Latency by App** (timeseries): P95 latency per app
- **API Retries by Reason** (timeseries): Retry patterns (429, timeout, connection errors)
- **API Error Rate** (stat): Overall API error percentage
#### OAuth & Authentication Row
OAuth token operations and caching:
- **Token Validations** (timeseries): Success/failure rates for token validation
- **Token Exchange Operations** (timeseries): RFC 8693 token exchange operations
- **Token Cache Hit Rate** (stat): Percentage of cache hits (color-coded: red<50%, yellow<80%, green≥80%)
- **Refresh Token Operations** (timeseries): Refresh token storage operations by type
#### Dependencies & Health Row
External dependency status monitoring:
- **Nextcloud Health** (stat): UP/DOWN status with color coding
- **Qdrant Health** (stat): Vector database health status
- **Keycloak Health** (stat): Identity provider health status
- **Unstructured API Health** (stat): Document processing API status
- **Health Check Duration** (timeseries): Health check latency by dependency
- **Database Operation Latency** (timeseries): P95 latency for DB operations (SQLite, Qdrant)
#### Vector Sync Row (when enabled)
Document processing pipeline metrics:
- **Documents Processed Rate** (timeseries): Processing throughput by status (success/failure)
- **Processing Queue Depth** (gauge): Current queue size with thresholds (yellow>50, red>100)
- **Qdrant Operations** (timeseries): Vector database operations by type
- **Document Processing Duration** (timeseries): P95 processing latency
## Importing to Grafana
### Manual Import
1. Open Grafana UI
2. Navigate to Dashboards → Import
3. Upload `nextcloud-mcp-server.json`
4. Select your Prometheus data source
5. Click "Import"
### Automated Import (Helm Chart)
The Helm chart now supports automatic dashboard provisioning via Grafana sidecar pattern.
#### Option 1: Using Helm Chart (Recommended)
Enable dashboard provisioning in your Helm values:
```yaml
# values.yaml for nextcloud-mcp-server chart
dashboards:
enabled: true
grafanaFolder: "Nextcloud MCP" # Folder name in Grafana
labels: {} # Additional labels if needed
```
Then deploy or upgrade:
```bash
helm upgrade --install nextcloud-mcp nextcloud-mcp-server \
--set dashboards.enabled=true
```
The dashboard will be automatically imported by Grafana if the sidecar is configured
to watch for ConfigMaps with label `grafana_dashboard: "1"`.
#### Option 2: Using kube-prometheus-stack
If using kube-prometheus-stack with Grafana sidecar enabled, the dashboard will be
automatically discovered and imported. Ensure your Grafana deployment has:
```yaml
# kube-prometheus-stack values
grafana:
sidecar:
dashboards:
enabled: true
label: grafana_dashboard
folder: /tmp/dashboards
provider:
foldersFromFilesStructure: true
```
#### Option 3: Manual ConfigMap Creation
For other Grafana setups, create a ConfigMap manually:
```bash
kubectl create configmap nextcloud-mcp-dashboard \
--from-file=nextcloud-mcp-server.json \
-n monitoring
# Add sidecar discovery label
kubectl label configmap nextcloud-mcp-dashboard \
grafana_dashboard=1 \
grafana_folder="Nextcloud MCP" \
-n monitoring
```
## Dashboard Variables
The dashboard includes four template variables for dynamic filtering:
- **datasource**: Select your Prometheus data source
- **namespace**: Filter metrics by Kubernetes namespace (supports "All")
- **pod**: Filter by specific pod(s) - multi-select enabled (supports "All")
- **interval**: Query interval for rate calculations (1m, 5m, 10m, 30m, 1h - default: 5m)
## Customization
You can customize the dashboard by:
1. Adjusting refresh rate (default: 30s)
2. Modifying time range (default: last 6 hours)
3. Adding new panels for specific metrics
4. Adjusting thresholds in existing panels
## Metrics Reference
All metrics are documented in `/docs/observability.md`. Key metric prefixes:
- `mcp_http_*` - HTTP server metrics
- `mcp_tool_*` - MCP tool invocation metrics
- `mcp_nextcloud_api_*` - Nextcloud API call metrics
- `mcp_oauth_*` - OAuth token validation metrics
- `mcp_vector_sync_*` - Vector database sync metrics
- `mcp_db_*` - Database operation metrics
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