如何使用默认的 istio beta 功能在 GKE 中安装带有 prometheus 的 Kiali Dashboard？

Question

I have been trying to install Kiali on an Istio (beta) enabled GKE cluster , I am following the official documentation to install Kiali using this link but Prometheus is somehow damaged since GCP has changed the name of Prometheus from "Prometheus" to "promsd" and Kiali dashboard keeps on pointing to http://prometheus.istio-system.com:9090 instead of http://promsd.istio-system.com:9090 . How should I fix this issue in a default ISTIO ENABLED GKE Cluster ?

Answer 1

You could check the kiali configmap in namespace istio-system (assuming you used the default namespace for istio installation). There should be a prometheus tag below external services. Change it and restart the kiali pod.

Update 20200821 : our config map (Istio (v1.5.6) installed via istioctl)

kind: ConfigMap
apiVersion: v1
metadata:
  name: kiali
  namespace: istio-system
  selfLink: /api/v1/namespaces/istio-system/configmaps/kiali
  uid: 660a2bfe-c71b-45ab-a438-ed61532dd8e3
  resourceVersion: '31024421'
  creationTimestamp: '2020-07-24T10:18:24Z'
  labels:
    app: kiali
    operator.istio.io/component: AddonComponents
    operator.istio.io/managed: Reconcile
    operator.istio.io/version: 1.5.6
    release: istio
  annotations:

data:
  config.yaml: |
    istio_component_namespaces:
      grafana: istio-system
      tracing: istio-system
      pilot: istio-system
      prometheus: istio-system
    istio_namespace: istio-system
    auth:
      strategy: login
    deployment:
      accessible_namespaces: ['**']
    login_token:
      signing_key: "xxxxxxxxxxxxxxxxxx"
    server:
      port: 20001
      web_root: /kiali
    external_services:
      istio:
        url_service_version: http://istio-pilot.istio-system:8080/version
      tracing:
        url: 
        in_cluster_url: http://tracing/jaeger
      grafana:
        url: 
        in_cluster_url: http://grafana:3000
      prometheus:
        url: http://prometheus.istio-system:9090

Answer 2

To make it work I had to edit ConfigMap called kiali inside of istio-system namespace. I added this lines under the external_services section:

prometheus:
  url: http://my-prometheus-kube-prometh-prometheus.default.svc.cluster.local:9090/

Answer 3

I had a similar error message (Not in GCP), and got resolved it by installing Prometheus:

$ kubectl apply -f https://raw.githubusercontent.com/istio/istio/release-1.13/samples/addons/prometheus.yaml

replace the release-1.13 with your istio version

https://istio.io/latest/docs/ops/integrations/prometheus/