ZooKeeper production deployment guide (summary)

A guide in this repository, ZooKeeper/guides/production-deployment/README.md, describing a three-member Apache ZooKeeper 3.9.5 ensemble on Ubuntu 24.04 LTS with mutual TLS, systemd, JMX metrics, and safe changes. It is a reference architecture, not evidence that a live environment was deployed or certified.¹

Takeaways

• Three members tolerate one failure; four still tolerate only one. See ZooKeeper.
• Change one member at a time and stop if the ensemble is not one leader plus two followers.¹ See ZooKeeper production deployment.

Footnotes

1. ZooKeeper Production Deployment Guide for DevOps Beginners, original on GitHub ↩ ↩²