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Create: 2025-07-01 Update: 2025-07-09 01:21:13

Как работают Validating Admission Policy?

Всем привет!

Еще одна статья, в которой описывается «как оно работает под капотом?». На этот раз речь пойдет про Validating Admission Policy и их реализацию в Kubernetes.

Вкратце этот механизм позволяет анализировать создаваемые в кластере ресурсы на соответствие предъявленным требованиям.

После небольшой вводной Автор переходит к описанию того, что это такое из чего оно состоит в Kubernetes. Рассматривается «собственный механизм», а не сторонние (Kyverno, Gatekeeper и т.д.).

В статье рассказано о:
🍭 API Definition. Из каких API состоит Validating Admission Policy
🍭 Controller Reconciliation. Из чего она состоит, какие задачи выполняются
🍭 Resource Admission. Как осуществляется проверка создаваемых в кластере ресурсов
🍭 Expression Cost Analysis. Контроль того, что Kubernetes API Server’у не станет «плохо» от проверок

Каждый блок описан не только с точки зрения теории, но и подкреплен конкретными примера из кодовой базы Kubernetes.

Завершает статью немного примеров анализа манифестов и как можно реализовать мониторинг Validating Admission Policy с использованием Prometheus.

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How It Works — Validating Admission Policy

The Kubernetes validating admission policy provides a mechanism to allow users to add custom validation policies into the Kubernetes…

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Как работают Validating Admission Policy?

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