Dashboards & Metrics

VION provides pre-built Grafana dashboards for every tenant and supports creating custom dashboards against the full metrics and logs dataset.

Pre-Built Dashboards

Every tenant gets two dashboards automatically:

Overview Dashboard

Provides a high-level view of your edge gateway fleet:

Panel	Description	Data Source
Gateway Uptime	Time series showing online/offline status per gateway	Mimir
Active Gateways	Count of currently online gateways	Mimir
Error Rate	Number of error log entries in the last hour	Loki
Error Logs	Recent error log entries across all gateways	Loki

Default time range: 1 hour, auto-refresh every 30 seconds.

Logs Dashboard

A searchable log stream from all your edge gateways:

• Full-text search across all log entries
• Filter by gateway, component, or log level
• Default time range: last 6 hours

Key Metrics

All metrics are labeled with tenant_id and gateway_id for filtering.

Metric	Description	Example Query
up	Gateway online status (1 = up, 0 = down)	up{tenant_id="<id>"}
Gateway count	Number of online gateways	count(up{tenant_id="<id>"} == 1)
Error count	Errors in time window	count_over_time({tenant_id="<id>"} |= "error" [1h])

Creating Custom Dashboards

If you have Editor permissions, you can create custom dashboards:

1. Click + → New Dashboard in Grafana
2. Add a panel and select Mimir (for metrics) or Loki (for logs) as the data source
3. Write your query using PromQL or LogQL
4. Save the dashboard in your tenant's folder

Example: Gateway Uptime Over 24h

up{tenant_id="your-tenant-id"}

Set the time range to Last 24 hours and visualization to Time series.

Example: Error Logs Containing "Modbus"

{tenant_id="your-tenant-id"} |= "Modbus" |= "error"

Set visualization to Logs for a searchable log stream.