# Проектирование HA-кластера

← [Раздел](README.md) · [Главная](../README.md)

**Уровень:** **Senior**

## Цель

Senior-уровень: **Проектирование HA-кластера**.

## Предварительно

- [20 — Senior](README.md)

## Время

**6–12 часов**

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## Control plane HA

- 3+ apiservers behind LB
- etcd 3/5 members, anti-affinity across zones
- Separate etcd from apiserver nodes (large clusters)

## Worker pools

- General purpose vs GPU vs spot/preemptible
- Node auto-repair, auto-upgrade (managed)

## Sizing

Start small; monitor etcd latency, apiserver request duration, scheduler latency.

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## Самопроверка

1. Design doc outline?
2. Risk top-3?

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## Дальше

→ [Multi-cluster и fleet](multi-cluster.md)