Replica Set Archives - ITFROMZERO

Installing & Configuring a MongoDB Replica Set: Production-Ready Automatic Failover

By IT From Zero November 5, 2026

A hands-on guide to deploying a production-grade 3-node MongoDB Replica Set: installation on Ubuntu 22.04, keyfile security, automated failover drills, and resilient connection strings.

Docker

Deploying a MongoDB Sharded Cluster with Docker Compose: Data Sharding for Large-Scale Applications

By IT From Zero September 3, 2026

A guide to deploying a MongoDB Sharded Cluster with Docker Compose, covering config servers, shard replica sets, and a mongos router. Based on real production experience with 10 million documents, including how to choose a shard key, verify data distribution, and monitor the cluster.

Monitoring

Comprehensive MongoDB Monitoring with Prometheus Exporter and Grafana: Replica Set, Connection Pool, Slow Queries

By IT From Zero June 16, 2026

A guide to setting up comprehensive MongoDB monitoring with Prometheus mongodb_exporter and Grafana. Focused on the 3 most common production issues: Replica Set health, Connection Pool exhaustion, and Slow Operations — with real-world PromQL queries and a tiered alert strategy to avoid alarm fatigue.

Database

Guide to Installing and Optimizing MongoDB for Production Environments

By IT From Zero March 14, 2026

Deploying MongoDB in a production environment is more than just basic installation. This article analyzes common issues, core causes, and provides detailed guidance on installation, Replica Set configuration, indexing optimization, security enhancement, and scaling with Sharding, helping your application run stably and efficiently.