Kubernetesは浩浩のお母さんでも理解できる

One day, Haohao’s mom took advantage of the food delivery war and bought a poor man’s lemonade from Mixue Ice Cream & Tea through Meituan Flash Purchase.

The process from making this poor man’s lemonade to delivering it to Haohao’s mom is the “Kubernetes application delivery” process.

Database paradigm is the core of ETCD

The poor man’s lemonade is the final delivered product. The data flow of user requests is the reverse of distributed system construction.

For information systems, the database (ETCD) is the underlying infrastructure. And the database paradigm is the core of ETCD.

ETCD stores this receipt in a structured storage (object) manner.

┌─────────────────────┐
│     蜜雪冰城门店     │
│  收银小票（示意）     │
├─────────────────────┤
│ 品名：穷鬼柠檬水     │
│ 数量：1 杯            │
│ 单价：¥ 3.00          │
│ ---------------------- │
│ 小计：¥ 3.00          │
│ 优惠：-¥ 0.00         │
│ 总计：¥ 3.00          │
├─────────────────────┤
│ 付款方式：现金／微信  │
│ 交易号：XXXX-XXXX-X   │
│ 日期：2025-10-21      │
│ 时间：19:45           │
├─────────────────────┤
│   谢谢惠顾，欢迎再来！  │
└─────────────────────┘

The “poor man’s lemonade” ordered by Haohao’s mom represents a user’s “expectation” (spec).

Mixue Ice Cream & Tea (Kubernetes) will help her make and deliver this “poor man’s lemonade” through the following actions.

The gap between reality and ideal is the goal of application delivery

The “poor man’s lemonade” in Haohao’s mom’s ideal (spec) and the actual (status) “poor man’s lemonade” in hand are two different concepts. The commercial description is “pictures are for reference only.” If platforms like Meituan and Ele.me are considered cloud service providers (cloud provider), then Mixue Ice Cream & Tea headquarters is the next link in the entire delivery pipeline (API server).

┌───────────────────────────────┐
│        Control Plane          │
│ ┌───────────────────────────┐ │
│ │ kube-apiserver            │ │
│ │ etcd (data store)         │ │
│ │ kube-scheduler            │ │
│ │ kube-controller-manager   │ │
│ │ cloud-controller-manager  │ │
│ └───────────────────────────┘ │
└───────────────────────────────┘
                 │
                 ▼
┌────────────────────────────────────────────┐
│               Worker Node                  │
│ ┌────────────┐  ┌────────────┐  ┌────────┐ │
│ │ kubelet    │  │ kube-proxy │  │ runtime│ │
│ └────────────┘  └────────────┘  └────────┘ │
│               └──► Pod(s) (containers)     │
└────────────────────────────────────────────┘

Mixue Ice Cream & Tea headquarters (API server/Control Plane Node) issues tasks to the actual executing stores (Worker Node), where the store manager (kubelet) assigns specific implementation tasks, and the specific employees of these stores (Container Runtime) are responsible for the final product production.

The last mile is the delivery rider’s obligation

After the product is made, the delivery rider needs to make the final delivery. The delivery rider is actually also the supervisor of the “poor man’s lemonade” (business).

During transportation, it needs to ensure the integrity of the product (observability analysis) and achieve consistency between the final delivery and customer requirements (expectations).

Drawing analogies is the art of learning

She can perceive the rhythm of design from music, and see the patterns of the market from history. Her vision is always unique.

From dance to drama, with her talent for drawing analogies, she integrates the nutrients of different art forms, continuously elevating her performance realm and broadening her acting path.

As a woman who balances both career and family responsibilities, with her deep understanding of both work and life roles, she excels in professional accounting while also being attentive in her role as a mother. She weaves confidence and tenderness together, showing admirable dual strength.

That spirit of drawing analogies is why she was able to learn Kubernetes in a single day.

Help Haohao’s mom find a partner

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Our future blueprint:
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Our story might just be missing your active greeting.
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Easter egg

你爸死了，我是你爹