GKE Autopilot是否会主动终止Pod？关键服务如何避免非预期重启？

故障现象 #

• 部署在Kubernetes上的Redis服务长时间不可用，导致Django及相关关联服务全部无法连接Redis，大量作业丢失，整体故障持续时长10分钟
• 经数小时排查暂未定位根因，仅确认Redis Deployment无对应事件记录

Pod重启前后日志 #

重启前首条日志 #

重启后首条日志 #

当前排查进展 #

• 所用集群为GKE Autopilot，初步推测Pod重启为集群主动触发，但该Pod CPU、内存使用率仅约1%，远低于申请的资源配额，触发原因暂不明确
• 暂未找到可让Autopilot不操作特定Deployment的注解

关联Redis配置文件 #

---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: redis-disk
spec:
  accessModes:
    - ReadWriteOnce
  storageClassName: gce-ssd
  resources:
    requests:
      storage: "2Gi"
---
apiVersion: v1
kind: Service
metadata:
  name: redis
  labels:
    app: redis
spec:
  ports:
    - port: 6379
      name: redis
  clusterIP: None
  selector:
    app: redis
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: redis
  labels:
    app: redis
spec:
  replicas: 1
  selector:
    matchLabels:
      app: redis
  template:
    metadata:
      labels:
        app: redis
    spec:
      volumes:
        - name: redis-volume
          persistentVolumeClaim:
            claimName: redis-disk
            readOnly: false
      terminationGracePeriodSeconds: 5
      containers:
        - name: redis
          image: redis:6-alpine
          command: ["sh"]
          args: ["-c", 'exec redis-server --requirepass "$REDIS_PASSWORD"']
          resources:
            requests:
              memory: "512Mi"
              cpu: "500m"
              ephemeral-storage: "1Gi"
          envFrom:
            - secretRef:
                name: env-secrets
          volumeMounts:
            - name: redis-volume
              mountPath: /data
              subPath: data

内容的提问来源于stack exchange，提问作者yspreen