Enabling Istio in a Rancher cluster

JM Robles
5 min readAug 21, 2022

TL;DR: How to install and set up Istio in a Kubernetes cluster managed with Rancher and Nginx ingress.

All that you need for a safe journey on the microservices ship


Istio is one of the most used mesh services to interconnect and communicate microservices in clusters. Istio is compound by several open sources of software and services. The core of the system es the Envoy proxy. It acts as a sidecar for each pod created under the realm of Istio.

It has a lot of interesting and necessary features for microservices: traffic management/routing using a rich set of rules, observability and tracing out of the box, ingress controller, …

With Istio is very easy to deploy under the feature flag (you decide how to enable the feature after the code is deployed).

Istio does that simply and elegantly.

A/B testing, focus group testing, planned rollout, …, both product and engineering teams can be happy with this feature.

I want this for my Kubernetes cluster managed by Rancher. It’s very interesting to do benchmarking for ML models, where you need a lot of samples to see if your model is production-ready or not.

Pre-requisites for Istio

I’m going to use Istio v.1.12. It’s no more supported by it is the latest supported by…



JM Robles

AIOps @ Montevive.ai / Backend / Platform engineer #llm #rag #llamaindex #langchain #go #python #kubernetes #terraform #devops