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Production deployment patterns

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

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How to Mock Docker Image Non-Root User in Python

This Python class simulates Docker image layers and inspects whether the final user is a non-root user, returning UID, GID, and security status.

docker security mock

Python

from pathlib import Path


class DockerImageMock:
    def __init__(self, name, tag):
        self.name = name
        self.tag = tag
        self.layers = []
        self.user = "root"

    def add_file(self, path, content):
        self.layers.append({"file": path, "content": content})

    def set_user(self, usernam…

11 0 Open

Production deployment patterns medium

How to Mock Kubernetes Secret Mounts in Python

Create and inspect a mock Kubernetes secret volume mount using the official client library and unittest.mock.

kubernetes mock testing

Python

import json
from kubernetes import client, config, watch
from unittest.mock import Mock, patch

def create_mock_mount_spec():
    """Create a mock Kubernetes secret volume mount."""
    mock_client = Mock()
    mock_client.api_version = "v1"
    mock_client.kind = "Secret"
    mock_client.metadata = {"name": "my-secre…

14 0 Open

Production deployment patterns medium

How to Mock Kubernetes Services with a ClusterIP Registry in Python

Simulate Kubernetes service discovery by assigning ClusterIP addresses to dataclass-defined services, with JSON export for inspection or testing.

kubernetes clusterip mock

Python

import json
from dataclasses import dataclass, asdict
from typing import Dict, Optional


@dataclass
class Service:
    name: str
    namespace: str
    cluster_ip: str
    selector: Dict[str, str]
    port: int
    target_port: Optional[int] = None


class ClusterIPServiceRegistry:
    _ip_counter = 0

    def __init…

13 0 Open

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