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远程访问遥测插件

此任务向您展示如何配置从外部访问 Istio 遥测插件。

telemetry

gateway

jaeger

zipkin

tracing

kiali

prometheus

addons

/zh/docs/tasks/telemetry/gateways/

此任务说明如何配置 Istio 以显示和访问集群外部的遥测插件。

配置远程访问

远程访问遥测插件的方式有很多种。该任务涵盖了两种基本访问方式：安全的（通过 HTTPS）和不安全的（通过 HTTP）。对于任何生产或敏感环境，强烈建议 通过安全方式访问。不安全访问易于设置，但是无法保护在集群外传输的任何凭据或数据。

方式 1：安全访问（HTTPS）

安全访问需要一个服务器证书。按照这些步骤来为您的域名安装并配置服务器证书。

您也可以使用自签名证书。访问配置使用 SDS 通过 HTTPS 访问的安全网关任务以了解使用自签名证书访问集群内服务的详情。

{{< warning >}} 本方式只涵盖了传输层的安全。您还应该配置遥测插件，使其暴露在外部时需要身份验证。 {{< /warning >}}

安装 cert-manager 以自动管理证书。
安装 Istio 到您的集群并启用 cert-manager 标志且配置 istio-ingressgateway 使用 Secret Discovery Service。

要安装相应的 Istio，使用下列安装选项：
- --set values.gateways.enabled=true
- --set values.gateways.istio-ingressgateway.enabled=true
- --set values.gateways.istio-ingressgateway.sds.enabled=true
要额外安装遥测插件，使用下列安装选项：
- Grafana: --set values.grafana.enabled=true
- Kiali: --set values.kiali.enabled=true
- Prometheus: --set values.prometheus.enabled=true
- Tracing: --set values.tracing.enabled=true
为您的域名配置 DNS 记录。
1. 获取 istio-ingressgateway 的外部 IP 地址。
  
  {{< text bash >}} $ kubectl -n istio-system get service istio-ingressgateway -o jsonpath='{.status.loadBalancer.ingress[0].ip}' {{< /text >}}
2. 设置环境变量保存目标域名：
  
  {{< text bash >}} $ TELEMETRY_DOMAIN=<your.desired.domain> {{< /text >}}
3. 通过您的域名提供商将所需的域名指向该外部 IP 地址。
  
  实现此步骤的机制因提供商而异。以下是一些示例文档链接：
  - Bluehost: DNS 管理增改删 DNS 条目
  - GoDaddy: 添加 A 记录
  - Google Domains: 资源记录
  - Name.com: 添加 A 记录
4. 验证 DNS 记录无误。
  
  {{< text bash >}} $ dig +short $TELEMETRY_DOMAIN {{< /text >}}
生成服务器证书

{{< text bash >}} $ cat <<EOF | kubectl apply -f - apiVersion: certmanager.k8s.io/v1alpha1 kind: Certificate metadata: name: telemetry-gw-cert namespace: istio-system spec: secretName: telemetry-gw-cert issuerRef: name: letsencrypt kind: ClusterIssuer commonName: $TELEMETRY_DOMAIN dnsNames:
- $TELEMETRY_DOMAIN acme: config:
  - http01: ingressClass: istio domains:
    - $TELEMETRY_DOMAIN
EOF certificate.certmanager.k8s.io "telemetry-gw-cert" created {{< /text >}}
等待服务器证书准备就绪。

{{< text syntax="bash" expandlinks="false" >}} $ JSONPATH='{range .items[]}{@.metadata.name}:{range @.status.conditions[]}{@.type}={@.status}{end}{end}' && kubectl -n istio-system get certificates -o jsonpath="$JSONPATH" telemetry-gw-cert:Ready=True {{< /text >}}
应用遥测插件的网络配置。
1. 应用以下配置以暴露 Grafana：
  
  {{< text bash >}} $ cat <<EOF | kubectl apply -f - apiVersion: networking.istio.io/v1alpha3 kind: Gateway metadata: name: grafana-gateway namespace: istio-system spec: selector: istio: ingressgateway servers:
  - port: number: 15031 name: https-grafana protocol: HTTPS tls: mode: SIMPLE serverCertificate: sds privateKey: sds credentialName: telemetry-gw-cert hosts:
    - "$TELEMETRY_DOMAIN"
  apiVersion: networking.istio.io/v1alpha3 kind: VirtualService metadata: name: grafana-vs namespace: istio-system spec: hosts:
  - "$TELEMETRY_DOMAIN" gateways:
  - grafana-gateway http:
  - match:
    - port: 15031 route:
    - destination: host: grafana port: number: 3000
  apiVersion: networking.istio.io/v1alpha3 kind: DestinationRule metadata: name: grafana namespace: istio-system spec: host: grafana trafficPolicy: tls: mode: DISABLE
  
  EOF gateway.networking.istio.io "grafana-gateway" configured virtualservice.networking.istio.io "grafana-vs" configured destinationrule.networking.istio.io "grafana" configured {{< /text >}}
2. 应用以下配置以暴露 Kiali：
  
  {{< text bash >}} $ cat <<EOF | kubectl apply -f - apiVersion: networking.istio.io/v1alpha3 kind: Gateway metadata: name: kiali-gateway namespace: istio-system spec: selector: istio: ingressgateway servers:
  - port: number: 15029 name: https-kiali protocol: HTTPS tls: mode: SIMPLE serverCertificate: sds privateKey: sds credentialName: telemetry-gw-cert hosts:
    - "$TELEMETRY_DOMAIN"
  apiVersion: networking.istio.io/v1alpha3 kind: VirtualService metadata: name: kiali-vs namespace: istio-system spec: hosts:
  - "$TELEMETRY_DOMAIN" gateways:
  - kiali-gateway http:
  - match:
    - port: 15029 route:
    - destination: host: kiali port: number: 20001
  apiVersion: networking.istio.io/v1alpha3 kind: DestinationRule metadata: name: kiali namespace: istio-system spec: host: kiali trafficPolicy: tls: mode: DISABLE
  
  EOF gateway.networking.istio.io "kiali-gateway" configured virtualservice.networking.istio.io "kiali-vs" configured destinationrule.networking.istio.io "kiali" configured {{< /text >}}
3. 应用以下配置以暴露 Prometheus：
  
  {{< text bash >}} $ cat <<EOF | kubectl apply -f - apiVersion: networking.istio.io/v1alpha3 kind: Gateway metadata: name: prometheus-gateway namespace: istio-system spec: selector: istio: ingressgateway servers:
  - port: number: 15030 name: https-prom protocol: HTTPS tls: mode: SIMPLE serverCertificate: sds privateKey: sds credentialName: telemetry-gw-cert hosts:
    - "$TELEMETRY_DOMAIN"
  apiVersion: networking.istio.io/v1alpha3 kind: VirtualService metadata: name: prometheus-vs namespace: istio-system spec: hosts:
  - "$TELEMETRY_DOMAIN" gateways:
  - prometheus-gateway http:
  - match:
    - port: 15030 route:
    - destination: host: prometheus port: number: 9090
  apiVersion: networking.istio.io/v1alpha3 kind: DestinationRule metadata: name: prometheus namespace: istio-system spec: host: prometheus trafficPolicy: tls: mode: DISABLE
  
  EOF gateway.networking.istio.io "prometheus-gateway" configured virtualservice.networking.istio.io "prometheus-vs" configured destinationrule.networking.istio.io "prometheus" configured {{< /text >}}
4. 应用以下配置以暴露跟踪服务：
  
  {{< text bash >}} $ cat <<EOF | kubectl apply -f - apiVersion: networking.istio.io/v1alpha3 kind: Gateway metadata: name: tracing-gateway namespace: istio-system spec: selector: istio: ingressgateway servers:
  - port: number: 15032 name: https-tracing protocol: HTTPS tls: mode: SIMPLE serverCertificate: sds privateKey: sds credentialName: telemetry-gw-cert hosts:
    - "$TELEMETRY_DOMAIN"
  apiVersion: networking.istio.io/v1alpha3 kind: VirtualService metadata: name: tracing-vs namespace: istio-system spec: hosts:
  - "$TELEMETRY_DOMAIN" gateways:
  - tracing-gateway http:
  - match:
    - port: 15032 route:
    - destination: host: tracing port: number: 80
  apiVersion: networking.istio.io/v1alpha3 kind: DestinationRule metadata: name: tracing namespace: istio-system spec: host: tracing trafficPolicy: tls: mode: DISABLE
  
  EOF gateway.networking.istio.io "tracing-gateway" configured virtualservice.networking.istio.io "tracing-vs" configured destinationrule.networking.istio.io "tracing" configured {{< /text >}}
通过浏览器访问这些遥测插件。
- Kiali: https://$TELEMETRY_DOMAIN:15029/
- Prometheus: https://$TELEMETRY_DOMAIN:15030/
- Grafana: https://$TELEMETRY_DOMAIN:15031/
- Tracing: https://$TELEMETRY_DOMAIN:15032/

方式 2：不安全访问（HTTP）

安装 Istio 到您的集群并启用您所需要的遥测插件。

要额外安装这些遥测插件，使用下列安装选项：
- Grafana: --set values.grafana.enabled=true
- Kiali: --set values.kiali.enabled=true
- Prometheus: --set values.prometheus.enabled=true
- Tracing: --set values.tracing.enabled=true
应用遥测插件的网络配置。
1. 应用以下配置以暴露 Grafana：
  
  {{< text bash >}} $ cat <<EOF | kubectl apply -f - apiVersion: networking.istio.io/v1alpha3 kind: Gateway metadata: name: grafana-gateway namespace: istio-system spec: selector: istio: ingressgateway servers:
  - port: number: 15031 name: http-grafana protocol: HTTP hosts:
    - "*"
  apiVersion: networking.istio.io/v1alpha3 kind: VirtualService metadata: name: grafana-vs namespace: istio-system spec: hosts:
  - "*" gateways:
  - grafana-gateway http:
  - match:
    - port: 15031 route:
    - destination: host: grafana port: number: 3000
  apiVersion: networking.istio.io/v1alpha3 kind: DestinationRule metadata: name: grafana namespace: istio-system spec: host: grafana trafficPolicy: tls: mode: DISABLE
  
  EOF gateway.networking.istio.io "grafana-gateway" configured virtualservice.networking.istio.io "grafana-vs" configured destinationrule.networking.istio.io "grafana" configured {{< /text >}}
2. 应用以下配置以暴露 Kiali：
  
  {{< text bash >}} $ cat <<EOF | kubectl apply -f - apiVersion: networking.istio.io/v1alpha3 kind: Gateway metadata: name: kiali-gateway namespace: istio-system spec: selector: istio: ingressgateway servers:
  - port: number: 15029 name: http-kiali protocol: HTTP hosts:
    - "*"
  apiVersion: networking.istio.io/v1alpha3 kind: VirtualService metadata: name: kiali-vs namespace: istio-system spec: hosts:
  - "*" gateways:
  - kiali-gateway http:
  - match:
    - port: 15029 route:
    - destination: host: kiali port: number: 20001
  apiVersion: networking.istio.io/v1alpha3 kind: DestinationRule metadata: name: kiali namespace: istio-system spec: host: kiali trafficPolicy: tls: mode: DISABLE
  
  EOF gateway.networking.istio.io "kiali-gateway" configured virtualservice.networking.istio.io "kiali-vs" configured destinationrule.networking.istio.io "kiali" configured {{< /text >}}
3. 应用以下配置以暴露 Prometheus：
  
  {{< text bash >}} $ cat <<EOF | kubectl apply -f - apiVersion: networking.istio.io/v1alpha3 kind: Gateway metadata: name: prometheus-gateway namespace: istio-system spec: selector: istio: ingressgateway servers:
  - port: number: 15030 name: http-prom protocol: HTTP hosts:
    - "*"
  apiVersion: networking.istio.io/v1alpha3 kind: VirtualService metadata: name: prometheus-vs namespace: istio-system spec: hosts:
  - "*" gateways:
  - prometheus-gateway http:
  - match:
    - port: 15030 route:
    - destination: host: prometheus port: number: 9090
  apiVersion: networking.istio.io/v1alpha3 kind: DestinationRule metadata: name: prometheus namespace: istio-system spec: host: prometheus trafficPolicy: tls: mode: DISABLE
  
  EOF gateway.networking.istio.io "prometheus-gateway" configured virtualservice.networking.istio.io "prometheus-vs" configured destinationrule.networking.istio.io "prometheus" configured {{< /text >}}
4. 应用以下配置以暴露跟踪服务：
  
  {{< text bash >}} $ cat <<EOF | kubectl apply -f - apiVersion: networking.istio.io/v1alpha3 kind: Gateway metadata: name: tracing-gateway namespace: istio-system spec: selector: istio: ingressgateway servers:
  - port: number: 15032 name: http-tracing protocol: HTTP hosts:
    - "*"
  apiVersion: networking.istio.io/v1alpha3 kind: VirtualService metadata: name: tracing-vs namespace: istio-system spec: hosts:
  - "*" gateways:
  - tracing-gateway http:
  - match:
    - port: 15032 route:
    - destination: host: tracing port: number: 80
  apiVersion: networking.istio.io/v1alpha3 kind: DestinationRule metadata: name: tracing namespace: istio-system spec: host: tracing trafficPolicy: tls: mode: DISABLE
  
  EOF gateway.networking.istio.io "tracing-gateway" configured virtualservice.networking.istio.io "tracing-vs" configured destinationrule.networking.istio.io "tracing" configured {{< /text >}}
通过浏览器访问这些遥测插件。
- Kiali: http://<IP ADDRESS OF CLUSTER INGRESS>:15029/
- Prometheus: http://<IP ADDRESS OF CLUSTER INGRESS>:15030/
- Grafana: http://<IP ADDRESS OF CLUSTER INGRESS>:15031/
- Tracing: http://<IP ADDRESS OF CLUSTER INGRESS>:15032/

清除

移除所有相关的网关：

{{< text bash >}} $ kubectl -n istio-system delete gateway grafana-gateway kiali-gateway prometheus-gateway tracing-gateway gateway.networking.istio.io "grafana-gateway" deleted gateway.networking.istio.io "kiali-gateway" deleted gateway.networking.istio.io "prometheus-gateway" deleted gateway.networking.istio.io "tracing-gateway" deleted {{< /text >}}
移除所有相关的 Virtual Services：

{{< text bash >}} $ kubectl -n istio-system delete virtualservice grafana-vs kiali-vs prometheus-vs tracing-vs virtualservice.networking.istio.io "grafana-vs" deleted virtualservice.networking.istio.io "kiali-vs" deleted virtualservice.networking.istio.io "prometheus-vs" deleted virtualservice.networking.istio.io "tracing-vs" deleted {{< /text >}}
如果安装了网关证书，移除它：

{{< text bash >}} $ kubectl -n istio-system delete certificate telemetry-gw-cert certificate.certmanager.k8s.io "telemetry-gw-cert" deleted {{< /text >}}

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配置远程访问

方式 1：安全访问（HTTPS）

apiVersion: networking.istio.io/v1alpha3 kind: DestinationRule metadata: name: grafana namespace: istio-system spec: host: grafana trafficPolicy: tls: mode: DISABLE

apiVersion: networking.istio.io/v1alpha3 kind: DestinationRule metadata: name: kiali namespace: istio-system spec: host: kiali trafficPolicy: tls: mode: DISABLE

apiVersion: networking.istio.io/v1alpha3 kind: DestinationRule metadata: name: prometheus namespace: istio-system spec: host: prometheus trafficPolicy: tls: mode: DISABLE

apiVersion: networking.istio.io/v1alpha3 kind: DestinationRule metadata: name: tracing namespace: istio-system spec: host: tracing trafficPolicy: tls: mode: DISABLE