chore: add health check endpoint for netease and healthcheck mechanism

docker/services/netease.yaml

@@ -11,5 +11,11 @@ services:
       - CAT_BACKEND_PORT=8888
       - CAT_BACKEND_HOST=netease
       - CAT_BACKEND_ALLOWED_ORIGINS=["*"]
+    healthcheck:
+      test: ["CMD-SHELL", "curl --fail http://$$CAT_BACKEND_HOST:$$CAT_BACKEND_PORT/api/healthz || exit 1"]
+      interval: 2s
+      timeout: 5s
+      retries: 3
+      start_period: 5s
     networks:
       - netease_network

docker/services/streamlit.yaml

@@ -9,5 +9,11 @@ services:
       - "8501:8501"
     environment:
       - UI_BACKEND_URL=http://netease:8888
+    healthcheck:
+      test: ["CMD-SHELL", "curl --fail http://streamlit:8501/api/healthz || exit 1"]
+      interval: 2s
+      timeout: 5s
+      retries: 3
+      start_period: 5s
     networks:
       - netease_network

k8s/configmap.yml

@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: frontend-config
+data:
+  UI_BACKEND_URL: "http://backend:8888"
+
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: backend-config
+data:
+  CAT_BACKEND_PORT: "8888"
+  CAT_BACKEND_HOST: "backend"
+  CAT_BACKEND_ALLOWED_ORIGINS: '["*"]'

k8s/deployment.yml

@@ -0,0 +1,105 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: frontend
+  labels:
+    app.kubernetes.io/name: frontend
+spec:
+  selector:
+    matchLabels:
+      app: frontend
+  template:
+    metadata:
+      labels:
+        app: frontend
+    spec:
+      containers:
+        - name: frontend
+          image: alaricle/streamlit:latest
+          ports:
+            - containerPort: 8501
+              name: pod-http
+          resources:
+            requests:
+              memory: "64Mi"
+              cpu: "64m"
+            limits:
+              memory: "200Mi"
+              cpu: "128m"
+          envFrom:
+            - configMapRef:
+                name: frontend-config
+          livenessProbe:
+            httpGet:
+              path: /liveness
+              port: myport
+            initialDelaySeconds: 5
+            periodSeconds: 10
+            failureThreshold: 1
+          startupProbe:
+            httpGet:
+              path: /healthz
+              port: myport
+            failureThreshold: 30
+            periodSeconds: 10
+          readinessProbe:
+            httpGet:
+              path: /readiness
+              port: myport
+            initialDelaySeconds: 5
+            periodSeconds: 10
+            failureThreshold: 1
+            successThreshold: 3
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: backend
+  labels:
+    app.kubernetes.io/name: backend
+spec:
+  selector:
+    matchLabels:
+      app: backend
+  template:
+    metadata:
+      labels:
+        app: backend
+    spec:
+      containers:
+        - name: backend
+          image: alaricle/netease:latest
+          ports:
+            - containerPort: 8888
+              name: pod-http
+          resources:
+            requests:
+              memory: "64Mi"
+              cpu: "64m"
+            limits:
+              memory: "200Mi"
+              cpu: "128m"
+          envFrom:
+            - configMapRef:
+                name: backend-config
+          livenessProbe:
+            httpGet:
+              path: /liveness
+              port: myport
+            initialDelaySeconds: 5
+            periodSeconds: 10
+            failureThreshold: 1
+          startupProbe:
+            httpGet:
+              path: /healthz
+              port: myport
+            failureThreshold: 30
+            periodSeconds: 10
+          readinessProbe:
+            httpGet:
+              path: /readiness
+              port: myport
+            initialDelaySeconds: 5
+            periodSeconds: 10
+            failureThreshold: 1
+            successThreshold: 3

k8s/hpa.yml

@@ -0,0 +1,37 @@
+apiVersion: autoscaling/v2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: netease-fe-hpa
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: frontend
+  minReplicas: 1
+  maxReplicas: 6
+  metrics:
+    - type: Resource
+      resource:
+        name: cpu
+        target:
+          type: Utilization
+          averageUtilization: 70
+---
+apiVersion: autoscaling/v2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: netease-be-hpa
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: backend
+  minReplicas: 1
+  maxReplicas: 6
+  metrics:
+    - type: Resource
+      resource:
+        name: cpu
+        target:
+          type: Utilization
+          averageUtilization: 70

k8s/ingress.yml

@@ -0,0 +1,30 @@
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: todo
+  annotations:
+    kubernetes.io/ingress.class: "nginx"
+    cert-manager.io/issuer: "letsencrypt-prod"
+spec:
+  tls:
+  - hosts:
+    - 441781.learnk8s.jamesisme.com
+    secretName: todo-tls
+  rules:
+  - host: 441781.learnk8s.jamesisme.com
+    http:
+      paths:
+      - path: /
+        pathType: Prefix
+        backend:
+          service: 
+            name: frontend
+            port:
+              name: svc-http
+      # - path: /api
+      #   pathType: Prefix
+      #   backend:
+      #     service: 
+      #       name: backend
+      #       port:
+      #         name: svc-http

k8s/issuer.yml

@@ -0,0 +1,18 @@
+apiVersion: cert-manager.io/v1
+kind: Issuer
+metadata:
+  name: letsencrypt-prod
+spec:
+  acme:
+    # The ACME server URL
+    server: https://acme-v02.api.letsencrypt.org/directory
+    # Email address used for ACME registration
+    email: ghbihuy123@gmail.com
+    # Name of a secret used to store the ACME account private key
+    privateKeySecretRef:
+      name: letsencrypt-prod
+    # Enable the HTTP-01 challenge provider
+    solvers:
+    - http01:
+        ingress:
+          class: nginx

k8s/service.yml

@@ -0,0 +1,32 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: frontend
+  labels:
+    app: frontend
+spec:
+  type: ClusterIP
+  ports:
+    - port: 80
+      name: svc-http
+      targetPort: pod-http
+      protocol: TCP
+  selector:
+    app: frontend
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: backend
+  labels:
+    app: backend
+spec:
+  type: ClusterIP
+  ports:
+    - port: 8888
+      name: svc-http
+      targetPort: pod-http
+      protocol: TCP
+  selector:
+    app: backend

src/cat/api/routers/net_ease.py

@@ -43,3 +43,7 @@ async def upload_excel(
         media_type="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
         headers={"Content-Disposition": "attachment; filename=processed_salaries.xlsx"},
     )
+
+@router.get("/healthz")
+def health_check():
+    return {"status": "healthy"}