purwandi / istio

Bring your own existing grafana and prometheus when installing istio.

Instal Istio

TLDR, istio is open platform to create service mesh in your microservice.

About

About this project is to simulate to installing istio using your own existing grafana and prometheus.

Why?

It's very hard to manually install grafana and prometheus because the istio website lack documentation about to installing and configuring individual addons component

Installing

Dump Istio Profile

istioctl profile dump demo > istio-dump.yaml

Edit yaml file

Edit istio-dump.yaml to disable grafana and prometheus component

apiVersion: install.istio.io/v1alpha1
kind: IstioOperator
spec:
  addonComponents:
    grafana:
      enabled: false
      k8s:
        replicaCount: 1
    istiocoredns:
      enabled: false
    kiali:
      enabled: true
      k8s:
        replicaCount: 1
    prometheus:
      enabled: false
      k8s:
        replicaCount: 1
    tracing:
      enabled: true

Before

istioctl profile dump demo

istioctl manifest apply -f istio-dump.yaml
--set values.kiali.prometheusAddr="http://prometheus-server"
--set values.kiali.dashboard.grafanaURL="http://grafana"

istioctl manifest apply -f istio-dump.yaml
--set values.kiali.dashboard.grafanaURL="http://grafana"

istioctl manifest apply -f istio-dump.yaml
--set values.kiali.prometheusAddr="http://prometheus-server.default"
--set values.kiali.dashboard.grafanaURL="http://grafana.default"

istioctl manifest generate -f istio-dump.yaml | kubectl delete -f -

https://istiobyexample.dev/prometheus/#:~:text=Istio%20By%20Example-,Bring%20Your%20Own%20Prometheus,and%20your%20Envoy%2Dinjected%20workloads.

helm fetch stable/prometheus --version 9.1.2 --untar

helm upgrade prometheus ./helm-charts/prometheus --values ./helm-charts/prometheus/values-istio.yaml --install --namespace istio-system --debug