Node.js on Kubernetes: The Complete Production Deployment Guide for 2026

Node.js on Kubernetes: The Complete Production Deployment Guide for 2026 You've containerized your Node.js application. Now what? Running a single Docker container locally is a long way from a production-grade Kubernetes deployment. This guide covers everything between those two points — from a production-ready Dockerfile to zero-downtime rolling updates, horizontal pod autoscaling, secret management, and proper health probes. This is part of the Node.js Production Series — practical guides for engineers running Node.js at scale. The Production-Ready Dockerfile Most Node.js Dockerfiles have silent problems: running as root, installing devDependencies, copying node_modules before source code. Here's a multi-stage build that solves all of them: # Stage 1: Build FROM node:22-alpine AS builder WORKDIR /app # Copy dependency manifests first (layer cache optimization) COPY package*.json ./ RUN npm ci --only = production && npm cache clean --force # Stage 2: Runtime FROM node:22-alpine AS run