add prometheus

5 files changed, 93 insertions, 0 deletions

diff --git a/f3s/prometheus/README.md b/f3s/prometheus/README.md
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+# Prometheus installation
+
+## Prometheus stack installation
+
+First, install the Prometheus Helm chart using the following commands:
+
+```sh
+kubectl greate ns monitoring
+helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
+helm repo update
+```
+
+Followed by the actual installation into the monitoring namespace:
+  
+```sh
+helm install prometheus prometheus-community/kube-prometheus-stack --namespace monitoring
+
+NAME: prometheus
+LAST DEPLOYED: Wed Oct 22 09:22:00 2025
+NAMESPACE: monitoring
+STATUS: deployed
+REVISION: 1
+NOTES:
+kube-prometheus-stack has been installed. Check its status by running:
+  kubectl --namespace monitoring get pods -l "release=prometheus"
+
+Get Grafana 'admin' user password by running:
+
+  kubectl --namespace monitoring get secrets prometheus-grafana -o jsonpath="{.data.admin-password}" | base64 -d ; echo
+
+Access Grafana local instance:
+
+  export POD_NAME=$(kubectl --namespace monitoring get pod -l "app.kubernetes.io/name=grafana,app.kubernetes.io/instance=prometheus" -oname)
+  kubectl --namespace monitoring port-forward $POD_NAME 3000
+
+Visit https://github.com/prometheus-operator/kube-prometheus for instructions on how to create & configure Alertmanager and Prometheus instances using the Operator.
+
+```
+
+## Grafana Ingress
+
+After this, deploy Grafana Ingress:
+
+```
+helm install grafana-ingress ./grafana-ingress
+```
diff --git a/f3s/prometheus/grafana-ingress/Chart.yaml b/f3s/prometheus/grafana-ingress/Chart.yaml
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+apiVersion: v2
+name: grafana-ingress
+description: A Helm chart for Grafana ingress
+version: 0.1.0
+appVersion: "1.0"
diff --git a/f3s/prometheus/grafana-ingress/Justfile b/f3s/prometheus/grafana-ingress/Justfile
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+NAMESPACE := "monitoring"
+RELEASE_NAME := "grafana-ingress"
+CHART_PATH := "."
+
+install:
+    helm install {{RELEASE_NAME}} {{CHART_PATH}} --namespace {{NAMESPACE}} --create-namespace
+
+upgrade:
+    helm upgrade {{RELEASE_NAME}} {{CHART_PATH}} --namespace {{NAMESPACE}}
+
+delete:
+    helm uninstall {{RELEASE_NAME}} --namespace {{NAMESPACE}}
diff --git a/f3s/prometheus/grafana-ingress/templates/ingress.yaml b/f3s/prometheus/grafana-ingress/templates/ingress.yaml
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+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: grafana-ingress
+  namespace: {{ .Values.ingress.namespace }}
+  annotations:
+    spec.ingressClassName: {{ index .Values.ingress.annotations "spec.ingressClassName" }}
+    traefik.ingress.kubernetes.io/router.entrypoints: {{ index .Values.ingress.annotations "traefik.ingress.kubernetes.io/router.entrypoints" }}
+spec:
+  rules:
+    - host: {{ .Values.ingress.host }}
+      http:
+        paths:
+          - path: /
+            pathType: Prefix
+            backend:
+              service:
+                name: {{ .Values.ingress.service.name }}
+                port:
+                  number: {{ .Values.ingress.service.port }}
diff --git a/f3s/prometheus/grafana-ingress/values.yaml b/f3s/prometheus/grafana-ingress/values.yaml
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+ingress:
+  enabled: true
+  host: grafana.f3s.buetow.org
+  namespace: monitoring
+  service:
+    name: prometheus-grafana
+    port: 80
+  annotations:
+    "spec.ingressClassName": traefik
+    "traefik.ingress.kubernetes.io/router.entrypoints": web