Task 14 : Implement Kubernetes Process

Author: Rapter1990

k8s/grafana-deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: grafana
+  namespace: default
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: grafana
+  template:
+    metadata:
+      labels:
+        app: grafana
+    spec:
+      containers:
+        - name: grafana
+          image: grafana/grafana-oss:latest
+          ports:
+            - containerPort: 3000
+          envFrom:
+            - secretRef:
+                name: grafana-secret
+          volumeMounts:
+            - name: grafana-storage
+              mountPath: /var/lib/grafana
+      volumes:
+        - name: grafana-storage
+          persistentVolumeClaim:
+            claimName: grafana-data
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: grafana-service
+  namespace: default
+spec:
+  type: NodePort
+  selector:
+    app: grafana
+  ports:
+    - protocol: TCP
+      port: 3000
+      targetPort: 3000

k8s/grafana-pvc.yaml

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+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: grafana-data
+  namespace: default
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 5Gi

k8s/grafana-secret.yaml

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+apiVersion: v1
+kind: Secret
+metadata:
+  name: grafana-secret
+  namespace: default
+type: Opaque
+data:
+  GF_SECURITY_ADMIN_PASSWORD: YWRtaW4=
+  GF_SERVER_DOMAIN: bG9jYWxob3N0

k8s/mysql-config.yml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: mysql-config
+  namespace: default
+data:
+  MYSQL_DATABASE: "zipdatabase"

k8s/mysql-pv.yml

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+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: mysql-pv
+  namespace: default
+spec:
+  capacity:
+    storage: 10Gi
+  accessModes:
+    - ReadWriteOnce
+  storageClassName: ""
+  hostPath:
+    path: /data/mysql
+    type: DirectoryOrCreate
+
+---
+
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: mysql-pvc
+  namespace: default
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 10Gi
+  storageClassName: ""

k8s/mysql-secret.yml

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+apiVersion: v1
+kind: Secret
+metadata:
+  name: mysql-secret
+  namespace: default
+type: Opaque
+data:
+  DATABASE_USERNAME: cm9vdA==
+  DATABASE_PASSWORD: aXBwYXZsb3ZhXzE5OTA=

k8s/mysql-statefulset.yml

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+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: mysql
+  namespace: default
+spec:
+  serviceName: mysql
+  replicas: 1
+  selector:
+    matchLabels:
+      app: mysql
+  template:
+    metadata:
+      labels:
+        app: mysql
+    spec:
+      containers:
+        - name: mysql
+          image: mysql:latest
+          ports:
+            - containerPort: 3307
+          args:
+            - "--port=3307"
+          env:
+            - name: MYSQL_ROOT_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: mysql-secret
+                  key: DATABASE_PASSWORD
+            - name: MYSQL_DATABASE
+              valueFrom:
+                configMapKeyRef:
+                  name: mysql-config
+                  key: MYSQL_DATABASE
+          volumeMounts:
+            - name: mysql-data
+              mountPath: /var/lib/mysql
+          lifecycle:
+            postStart:
+              exec:
+                command:
+                  - /bin/sh
+                  - -lc
+                  - |
+                    # Wait for server to accept connections
+                    for i in $(seq 1 60); do
+                      mysqladmin ping -h127.0.0.1 -P3307 -uroot -p"$MYSQL_ROOT_PASSWORD" --silent && break
+                      sleep 2
+                    done
+                    mysql -h127.0.0.1 -P3307 -uroot -p"$MYSQL_ROOT_PASSWORD" \
+                      -e "CREATE DATABASE IF NOT EXISTS \`$MYSQL_DATABASE\` CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;"
+      volumes:
+        - name: mysql-data
+          persistentVolumeClaim:
+            claimName: mysql-pvc
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: mysql
+  namespace: default
+spec:
+  selector:
+    app: mysql
+  ports:
+    - protocol: TCP
+      port: 3307
+      targetPort: 3307
+  clusterIP: None

k8s/prometheus-configmap.yml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: prometheus-config
+  namespace: default
+data:
+  prometheus.yml: |
+    global:
+      scrape_interval: 120s # By default, scrape targets every 15 seconds.
+      evaluation_interval: 120s # By default, evaluate rules every 15 seconds.
+
+    # A scrape configuration containing exactly one endpoint to scrape:
+    # Here it's Prometheus itself.
+    scrape_configs:
+      # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
+      - job_name: 'prometheus'
+        # Override the global default and scrape targets from this job every 5 seconds.
+        scrape_interval: 5s
+        # metrics_path defaults to '/metrics'
+        # scheme defaults to 'http'.
+        static_configs:
+          - targets: ['prometheus-service.default.svc.cluster.local:9090']
+
+      - job_name: 'Spring Boot Application input'
+        metrics_path: '/actuator/prometheus'
+        scrape_interval: 2s
+        static_configs:
+          - targets: ['xlsxziptotxtzip-service.default.svc.cluster.local:1929']
+            labels:
+              application: 'Xlsx Zip To Txt Zip Process'

k8s/prometheus-deployment.yml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: prometheus
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: prometheus
+  template:
+    metadata:
+      labels:
+        app: prometheus
+    spec:
+      containers:
+        - name: prometheus
+          image: prom/prometheus:latest
+          args:
+            - '--config.file=/etc/prometheus/prometheus.yml'
+          ports:
+            - containerPort: 9090
+          volumeMounts:
+            - name: prometheus-config
+              mountPath: /etc/prometheus/prometheus.yml
+              subPath: prometheus.yml # Ensure only the file is mounted
+      volumes:
+        - name: prometheus-config
+          configMap:
+            name: prometheus-config
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: prometheus-service
+spec:
+  selector:
+    app: prometheus
+  ports:
+    - protocol: TCP
+      port: 9090
+      targetPort: 9090
+  type: NodePort

k8s/sonarqube-data-pvc.yml

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+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: sonarqube-data-pvc
+  namespace: default
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 10Gi