Task 24 : Implement Kubernetes Process

Author: Rapter1990

k8s/cryptoexchangeapi-config.yml

@@ -0,0 +1,13 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: cryptoexchangeapi-config
+  namespace: default
+data:
+  server.port: "1927"
+  spring.data.mongodb.host: "mongodb"
+  spring.data.mongodb.port: "27017"
+  spring.data.mongodb.database: "cryptoexchangedatabase"
+
+  CMC_BASE_URL: "https://pro-api.coinmarketcap.com"
+  CMC_CACHE_TTL: "10000"

k8s/cryptoexchangeapi-deployment.yml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: cryptoexchangeapi
+  namespace: default
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: cryptoexchangeapi
+  template:
+    metadata:
+      labels:
+        app: cryptoexchangeapi
+    spec:
+      containers:
+        - name: cryptoexchangeapi
+          image: noyandocker/cryptoexchangeapi:latest
+          ports:
+            - containerPort: 1133
+          envFrom:
+            - configMapRef:
+                name: cryptoexchangeapi-config
+            - secretRef:
+                name: cryptoexchangeapi-secrets
+          volumeMounts:
+            - name: cryptoexchangeapi-data
+              mountPath: /data/logs
+          # Optional health checks (you enabled management endpoints)
+          livenessProbe:
+            httpGet:
+              path: /actuator/health/liveness
+              port: 1927
+            initialDelaySeconds: 20
+            periodSeconds: 10
+          readinessProbe:
+            httpGet:
+              path: /actuator/health/readiness
+              port: 1927
+            initialDelaySeconds: 10
+            periodSeconds: 10
+      volumes:
+        - name: cryptoexchangeapi-data
+          emptyDir: {}
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: cryptoexchangeapi-service
+  namespace: default
+spec:
+  selector:
+    app: cryptoexchangeapi
+  ports:
+    - protocol: TCP
+      port: 1927
+      targetPort: 1927
+  type: NodePort

k8s/cryptoexchangeapi-secrets.yml

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+apiVersion: v1
+kind: Secret
+metadata:
+  name: cryptoexchangeapi-secrets
+  namespace: default
+type: Opaque
+stringData:
+  CMC_API_KEY: "ODRiZDBmOGQtZmFjNy00MGZkLThiMTktZWEwMTJhYzUwMDNl"

k8s/grafana-deployment.yml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: grafana
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: grafana
+  template:
+    metadata:
+      labels:
+        app: grafana
+    spec:
+      containers:
+        - name: grafana
+          image: grafana/grafana-oss:latest
+          ports:
+            - containerPort: 3000
+          env:
+            - name: GF_SECURITY_ADMIN_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: grafana-secret
+                  key: GF_SECURITY_ADMIN_PASSWORD
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: grafana-service
+spec:
+  selector:
+    app: grafana
+  ports:
+    - protocol: TCP
+      port: 3000
+      targetPort: 3000
+  type: NodePort

k8s/grafana-secret.yml

@@ -0,0 +1,8 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: grafana-secret
+  namespace: default
+type: Opaque
+data:
+  GF_SECURITY_ADMIN_PASSWORD: YWRtaW4= # Base64 encoded password (admin)

k8s/mongodb-pv.yml

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+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: mongodb-pv
+  namespace: default
+spec:
+  capacity:
+    storage: 5Gi
+  accessModes:
+    - ReadWriteOnce
+  hostPath:
+    path: /data/mongodb
+
+---
+
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: mongodb-pvc
+  namespace: default
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 5Gi

k8s/mongodb-statefulset.yml

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+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: mongodb
+  namespace: default
+spec:
+  serviceName: mongodb
+  replicas: 1
+  selector:
+    matchLabels:
+      app: mongodb
+  template:
+    metadata:
+      labels:
+        app: mongodb
+    spec:
+      containers:
+        - name: mongodb
+          image: mongo:latest
+          ports:
+            - containerPort: 27017
+          volumeMounts:
+            - name: mongodb-data
+              mountPath: /data/db
+  volumeClaimTemplates:
+    - metadata:
+        name: mongodb-data
+      spec:
+        accessModes: [ "ReadWriteOnce" ]
+        resources:
+          requests:
+            storage: 5Gi
+
+---
+
+apiVersion: v1
+kind: Service
+metadata:
+  name: mongodb
+  namespace: default
+  labels:
+    app: mongodb
+spec:
+  ports:
+    - name: mongo
+      port: 27017
+      targetPort: 27017
+  clusterIP: None # Headless service for StatefulSet
+  selector:
+    app: mongodb

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: ['cryptoexchangeapi-service.default.svc.cluster.local:1927']
+            labels:
+              application: 'Crypto Exchange Api'

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