The ArangoDB Kubernetes Operator (kube-arangodb) exposes metrics of its operations in a format that is compatible with Prometheus.

The metrics are exposed through HTTPS on port 8528 under path /metrics.

Look at examples/metrics for examples of Services and ServiceMonitors you can use to integrate with Prometheus through the Prometheus-Operator by CoreOS.

Furthermore, the operator can run sidecar containers for ArangoDB deployments of type Cluster which expose metrics in Prometheus format. Use the attribute spec.metrics to set this up see the spec reference for details.