31 lines
2.2 KiB
Markdown
31 lines
2.2 KiB
Markdown
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---
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title: Kube-prometheus-stack
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description: Kube-prometheus-stack contains Kubernetes manifests, Prometheus and Grafana, including preconfigured dashboards
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---
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## Kube-prometheus-stack Overview
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Grafana is an open-source monitoring solution that enables viusalization of metrics and logs.
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Prometheus is an open-source monitoring and alerting system which collects metrics from services and allows the metrics to be shown in Grafana.
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### Implementation Details
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The application ist started in edfbuilder/kind/stacks/core/kube-prometheus.yaml.
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The application has the sync option spec.syncPolicy.syncOptions ServerSideApply=true. This is necessary, since kube-prometheus-stack exceeds the size limit for secrets and without this option a sync attempt will fail and throw an exception.
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The Helm values file edfbuilder/kind/stacks/core/kube-prometheus/values.yaml contains configuration values:
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grafana.additionalDataSources contains Loki as a Grafana Data Source.
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grafana.ingress contains the Grafana ingress configuratione, like the host url (cnoe.localtest.me).
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grafana.sidecar.dashboards contains necessary configurations so additional user defined dashboards are loaded when Grafana is started.
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grafana.grafana.ini.server contains configuration details that are necessary, so the ingress points to the correct url.
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### Start
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Once Grafana is running it is accessible under https://cnoe.localtest.me/grafana.
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Many preconfigured dashboards can be used by klicking the menu option Dashboards.
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### Adding your own dashboards
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The application edfbuilder/kind/stacks/core/kube-prometheus.yaml is used to import new Loki dashboards. Examples for imported dashboards can be found in the folder edfbuilder/kind/stacks/core/kube-prometheus/dashboards.
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It is possible to add your own dashboards: Dashboards must be in JSON format. To add your own dashboard create a new ConfigMap in YAML format using onw 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.)
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Currently preconfigured dashboards include several dahboards for Loki and a dashboard to showcase Nginx-Ingress metrics.
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