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Telemetry technology stack
Various telemetry tools are included in the technology stack of this repository.
kube-prometheus-stack: prometheus, grafana, dashboards
Kube-prometheus-stack contains Kubernetes manifests, Prometheus and Grafana, including preconfigured dashboards.
Kube-prometheus-stack Overview
Grafana is an open-source monitoring solution that enables viusalization of metrics and logs. Prometheus is an open-source monitoring and alerting system which collects metrics from services and allows the metrics to be shown in Grafana.
Adding your own dashboards
Examples for additional preconfigured dashboards can be found in the folder dashboards.
It is possible to add your own dashboards by putting them into the same folder.
- Dashboards must be in JSON format. To add your own dashboard create a new ConfigMap in YAML format using one of the examples as a blueprint.
- The new dashboard in JSON format has to be added as the value for data.k8s-dashboard-[...].json like in the examples. (It is important to use a unique name for data.k8s-dashboard-[...].json for each dashboard.)
Currently the preconfigured dashboards include several examples for Loki and Nginx-Ingress metrics.
Loki
Grafana Loki is a scalable open-source log aggregation system.
Loki Overview
Loki is started in microservices mode and contains the components ingester, distributor, querier, and query-frontend. It can be configured by it's helm values file.
promtail
Grafana Promtail is an agent that ships logs to a Grafan Loki instance (log-shipper).
The application Grafana Promtail is started in edfbuilder/kind/stacks/core/promtail.yaml. It can also be configured by it's helm values file.