refactor: 切换 Celery broker 为阿里云 Redis，移除自建 Redis Pod

复用现有阿里云 Tair 实例（db8），减少集群内 Pod 数量和运维负担。

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitea/workflows/deploy.yaml

@@ -65,7 +65,7 @@ jobs:
           sed -i "s|\${CI_REGISTRY_IMAGE}/video-web:latest|${SWR_IMAGE}/video-web:latest|g" k8s/web-deployment.yaml
 
           # Copy k8s manifests to server
-          scp -o StrictHostKeyChecking=no k8s/backend-deployment.yaml k8s/web-deployment.yaml k8s/ingress.yaml k8s/redis-deployment.yaml k8s/celery-deployment.yaml root@${{ secrets.K3S_HOST }}:/tmp/
+          scp -o StrictHostKeyChecking=no k8s/backend-deployment.yaml k8s/web-deployment.yaml k8s/ingress.yaml k8s/celery-deployment.yaml root@${{ secrets.K3S_HOST }}:/tmp/
 
           # Create/update secrets and apply manifests on server
           set -o pipefail
@@ -84,7 +84,6 @@ jobs:
               --from-literal=ALIYUN_SMS_ACCESS_SECRET='${{ secrets.ALIYUN_SMS_ACCESS_SECRET }}' \
               --dry-run=client -o yaml | kubectl apply -f -
 
-            kubectl apply -f /tmp/redis-deployment.yaml
             kubectl apply -f /tmp/backend-deployment.yaml
             kubectl apply -f /tmp/celery-deployment.yaml
             kubectl apply -f /tmp/web-deployment.yaml
@@ -97,7 +96,7 @@ jobs:
             kubectl rollout restart deployment/celery-worker
             kubectl rollout restart deployment/video-web
 
-            rm -f /tmp/backend-deployment.yaml /tmp/web-deployment.yaml /tmp/ingress.yaml /tmp/redis-deployment.yaml /tmp/celery-deployment.yaml
+            rm -f /tmp/backend-deployment.yaml /tmp/web-deployment.yaml /tmp/ingress.yaml /tmp/celery-deployment.yaml
           ENDSSH
 
       # ===== Log Center: failure reporting =====

backend/config/settings.py

@@ -173,7 +173,7 @@ CSRF_TRUSTED_ORIGINS = [o for o in CORS_ALLOWED_ORIGINS if o.startswith('https:/
 # ──────────────────────────────────────────────
 # Celery (async task queue)
 # ──────────────────────────────────────────────
-CELERY_BROKER_URL = os.environ.get('REDIS_URL', 'redis://localhost:6379/0')
+CELERY_BROKER_URL = os.environ.get('REDIS_URL', 'redis://:vAhRnAA6VMco@r-7xvat0vez5clwbzk5vpd.redis.rds.aliyuncs.com:6379/8')
 CELERY_RESULT_BACKEND = CELERY_BROKER_URL
 CELERY_ACCEPT_CONTENT = ['json']
 CELERY_TASK_SERIALIZER = 'json'

k8s/backend-deployment.yaml

@@ -56,7 +56,7 @@ spec:
           value: "3306"
         # Redis (Celery broker)
         - name: REDIS_URL
-          value: "redis://redis-service:6379/0"
+          value: "redis://:vAhRnAA6VMco@r-7xvat0vez5clwbzk5vpd.redis.rds.aliyuncs.com:6379/8"
         # CORS
         - name: CORS_ALLOWED_ORIGINS
           value: "https://airflow-studio.airlabs.art"

k8s/celery-deployment.yaml

@@ -35,7 +35,7 @@ spec:
               key: DJANGO_SECRET_KEY
         # Redis
         - name: REDIS_URL
-          value: "redis://redis-service:6379/0"
+          value: "redis://:vAhRnAA6VMco@r-7xvat0vez5clwbzk5vpd.redis.rds.aliyuncs.com:6379/8"
         # Database (Aliyun RDS)
         - name: DB_HOST
           valueFrom:

k8s/redis-deployment.yaml

@@ -1,40 +0,0 @@
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: redis
-  labels:
-    app: redis
-spec:
-  replicas: 1
-  selector:
-    matchLabels:
-      app: redis
-  template:
-    metadata:
-      labels:
-        app: redis
-    spec:
-      containers:
-      - name: redis
-        image: redis:7-alpine
-        ports:
-        - containerPort: 6379
-        resources:
-          requests:
-            memory: "64Mi"
-            cpu: "50m"
-          limits:
-            memory: "128Mi"
-            cpu: "100m"
----
-apiVersion: v1
-kind: Service
-metadata:
-  name: redis-service
-spec:
-  selector:
-    app: redis
-  ports:
-    - protocol: TCP
-      port: 6379
-      targetPort: 6379