# Monitoring Block

This block sets up the monitoring stack for Self Host Blocks. It is composed of:

- Grafana as the dashboard frontend.
- Prometheus as the database for metrics.
- Loki as the database for logs.

## Provisioning

Self Host Blocks will create automatically the following resources:

- For Grafana:
  - datasources
  - dashboards
  - contact points
  - notification policies
  - alerts
- For Prometheus, the following exporters and related scrapers:
  - node
  - smartctl
  - nginx
- For Loki, the following exporters and related scrapers:
  - systemd

Those resources are namespaced as appropriate under the Self Host Blocks namespace:

![](../assets/monitoring_grafana_folder.png)

## Errors Dashboard

This dashboard is meant to be the first stop to understand why a service is misbehaving.

![](../assets/monitoring_grafana_dashboards_Errors_1.png)
![](../assets/monitoring_grafana_dashboards_Errors_2.png)

The yellow and red dashed vertical bars correspond to the [Requests Error Budget
Alert](#requests-error-budget-alert) firing.

## Performance Dashboard

This dashboard is meant to be the first stop to understand why a service is performing poorly.

![](../assets/monitoring_grafana_dashboards_Performance_1.png)
![](../assets/monitoring_grafana_dashboards_Performance_2.png)

## Requests Error Budget Alert

This alert will fire when the ratio between number of requests getting a 5XX response from a service
and the total requests to that service exceeds 1%.

![](../assets/monitoring_grafana_alert_rules_5xx_1.png)
![](../assets/monitoring_grafana_alert_rules_5xx_2.png)