refactor: simplify k8s config by using direct env vars instead of secrets

k8s/api-deployment-prod.yaml

@@ -21,25 +21,17 @@ spec:
         ports:
         - containerPort: 8002
         env:
+        # PostgreSQL Database
         - name: DB_HOST
-          valueFrom:
+          value: "pgm-7xv4811oj11j86htzo.pg.rds.aliyuncs.com"
-            secretKeyRef:
-              name: log-center-secrets
-              key: db-host
         - name: DB_PORT
           value: "5432"
         - name: DB_NAME
           value: "log_center"
         - name: DB_USER
-          valueFrom:
+          value: "log_center"
-            secretKeyRef:
-              name: log-center-secrets
-              key: db-user
         - name: DB_PASSWORD
-          valueFrom:
+          value: "JogNQdtrd3WY8CBCAiYfYEGx"
-            secretKeyRef:
-              name: log-center-secrets
-              key: db-password
         resources:
           requests:
             memory: "128Mi"

k8s/secrets.yaml

@@ -1,19 +0,0 @@
-# K8s Secret for Log Center database credentials
-# Apply this ONCE before first deployment:
-# kubectl apply -f k8s/secrets.yaml
-#
-# You can also create it with kubectl directly:
-# kubectl create secret generic log-center-secrets \
-#   --from-literal=db-host=pgm-7xv4811oj11j86htzo.pg.rds.aliyuncs.com \
-#   --from-literal=db-user=log_center \
-#   --from-literal=db-password=JogNQdtrd3WY8CBCAiYfYEGx
-
-apiVersion: v1
-kind: Secret
-metadata:
-  name: log-center-secrets
-type: Opaque
-stringData:
-  db-host: pgm-7xv4811oj11j86htzo.pg.rds.aliyuncs.com
-  db-user: log_center
-  db-password: JogNQdtrd3WY8CBCAiYfYEGx