first commit

examples/python-web-app/Dockerfile

@@ -1,4 +1,4 @@
-FROM ubuntu
+FROM ubuntu:24.04
 
 WORKDIR /app
 

examples/python-web-app/cm.yaml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: test-cm
+data:
+  db-port: "3310"

examples/python-web-app/custom_kube_prometheus_stack.yml

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+alertmanager:
+  alertmanagerSpec:
+    # Selects Alertmanager configuration based on these labels. Ensure that the Alertmanager configuration has matching labels.
+    # ✅ Solves error: Misconfigured Alertmanager selectors can lead to missing alert configurations.
+    # ✅ Solves error: Alertmanager wasn't able to findout the applied CRD (kind: Alertmanagerconfig)
+    alertmanagerConfigSelector:
+      matchLabels:
+        release: monitoring
+
+    # Sets the number of Alertmanager replicas to 3 for high availability.
+    # ✅ Solves error: Single replica can cause alerting issues during pod failures.
+    # ✅ Solves error: Alertmanager Cluster Status is Disabled (GitHub issue)
+    replicas: 2
+
+    # Sets the strategy for matching Alertmanager configurations. 'None' means no specific matching strategy.
+    # ✅ Solves error: Incorrect matcher strategy can lead to unhandled alert configurations.
+    # ✅ Solves error: Get rid of namespace matchers when creating AlertManagerConfig (GitHub issue)
+    alertmanagerConfigMatcherStrategy:
+      type: None

examples/python-web-app/deployment.yml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: python-deployment
+  labels:
+    app: sample-python-app
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app: sample-python-app
+  template:
+    metadata:
+      labels:
+        app: sample-python-app
+    spec:
+      containers:
+      - name: sample-python-app
+        image: wasimakram0028/django-web-app:latest
+        volumeMounts:
+        - name: foo
+          mountPath: "/opt"
+        ports:
+        - containerPort: 8000
+      volumes:
+      - name: foo
+        secret:
+          secretName: secret-basic-auth
+

examples/python-web-app/extra.yaml

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+Get Grafana 'admin' user password by running:
+
+  kubectl --namespace monitoring get secrets monitoring-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=monitoring" -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.

examples/python-web-app/secrets.yaml

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+apiVersion: v1
+kind: Secret
+metadata:
+  name: secret-basic-auth
+type: kubernetes.io/basic-auth
+stringData:
+  username: admin # required field for kubernetes.io/basic-auth
+  password: t0p-Secret # required field for kubernetes.io/basic-auth

examples/python-web-app/service.yml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: python-django-service
+spec:
+  type: LoadBalancer
+  selector:
+    app: sample-python-app
+  ports:
+    - port: 80
+      targetPort: 8000
+      nodePort: 30007