Kubernetes Istio Demo

This repository contains the demo of Managing Microservices with Kubernetes & Istio.

Prerequisites

1. Install Docker-for-desktop (mac or windows)
2. Enable Kubernetes in Docker-for-Desktop
3. Install Istio in the kubernetes cluster.

Version v1 Deployments

1. Install mysql database in the cluster

   kubectl apply -f yamls/0.mysql
   

2. Install hero, villain, threats services using yamls

   kubectl apply -f yamls/v1
   

Version v2 deployment

1. Install versioin v2 deployment

   kubectl apply -f yamls/v2
   

Observability Commands

1. To open Kiali Service Graph.

   kubectl -n istio-system port-forward $(kubectl -n istio-system get pod -l app=kiali -o jsonpath='{.items[0].metadata.name}') 20001:20001
   

2. To open prometheus

   kubectl -n istio-system port-forward $(kubectl -n istio-system get pod -l app=prometheus -o jsonpath='{.items[0].metadata.name}') 9090:9090
   

   Query: istio_requests_total{destination_service="heroes.default.svc.cluster.local"} To get total requests to heroes service Query: istio_requests_total{destination_service="heroes.default.svc.cluster.local", destination_version="v3"} to get total requests to heroes - v3 service

3. To open Graffana

   kubectl -n istio-system port-forward $(kubectl -n istio-system get pod -l app=grafana -o jsonpath='{.items[0].metadata.name}') 3000:3000 
   

External Service Mesh