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Production deployment patterns

Graceful shutdown, prod config, rollouts, readiness probes, and ship-with-confidence checks.

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Production deployment patterns medium

How to mock Kustomize overlay patches in Python

Simulate Kustomize overlay behavior by deep-merging a base Kubernetes manifest with a patch dictionary in pure Python.

kubernetes kustomize deep-merge
Python 
import json

SOURCE = {
    "apiVersion": "apps/v1",
    "kind": "Deployment",
    "metadata": {"name": "app", "namespace": "prod"},
    "spec": {
        "replicas": 3,
        "template": {
            "spec": {
                "containers": [{"name": "app", "image": "nginx:1.19"}]
            }
        }
    }
}

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