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Production deployment patterns

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

3 matches

How to Generate a Kubernetes Deployment Manifest in Python

Generate a Kubernetes Deployment manifest as YAML from a Python dictionary using PyYAML.

import yaml

deployment = {
    "apiVersion": "apps/v1",
    "kind": "Deployment",
    "metadata": {
        "name": "mock-app",
        "labels": {"app": "mock-app"}
    },
    "spec": {
        "replicas": 3,
        "selector": {
            "matchLabels": {"app": "mock-app"}
        },
        "template": {
      …

13 0 Open

Production deployment patterns easy

How to Merge Helm Chart Values Per Environment in Python

Merge default Helm chart values with environment-specific overrides using a recursive dictionary merge function, then write each environment's YAML file.

helm merge yaml

Python

from pathlib import Path
import json
import tempfile


DEFAULT_VALUES = {
    "image": "nginx:latest",
    "replicas": 1,
    "resources": {"cpu": "100m", "memory": "128Mi"},
}

ENV_OVERRIDES = {
    "dev": {"replicas": 1, "resources": {"cpu": "50m"}},
    "staging": {"replicas": 2, "resources": {"cpu": "250m", "memor…

11 0 Open

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"}]
            }
        }
    }
}

P…

15 0 Open

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