Edge Node Observability Stack

The Edge Node Observability stack is intended for Edge & Host Managers and Host Operators to monitor the following aspects of Edge Nodes:

• Hosts (Edge Node) - telemetry from the hosts of the Edge Node (including provisioning).

• Clusters (Edge Node) - telemetry from the cluster running on the Edge Node.

• Applications (Edge Node) - telemetry from the applications running on the Edge Node.

Key components of observability stack that allow collection, storage, and consumption of metrics, logs, and traces are:

• Grafana UI - provides the frontend for visualization.

• OpenTelemetry Collector (Customized):

  • Provides logs collection pipelines with log transformation.

  • Collects supplementary metrics from Edge Orchestrator services.

  • Routes logs and metrics to appropriate tenants based on metadata.

• Grafana Mimir - used as metrics backend.

• Grafana Loki - used as logs backend.

Note

To restrict access to data associated with individual tenants, a grafana-proxy custom extension is used while accessing datasources. Refer to Multitenancy for more details on how multitenancy in observability is handled.

Deployment

The stack is separated into following ArgoCD applications:

• edgenode-observability - provides core services of the observability stack (for example, Grafana UI, Grafana Mimir, Grafana Loki, OpenTelemetry Collector).

• edgenode-dashboards - provides Grafana UI dashboards for Edge Node Hosts, Clusters, and Applications.

Storage

Grafana Mimir and Grafana Loki are configured to use:

• AWS S3 for cloud-based deployments

• S3-compatible storage (MinIO) for on-prem deployments