Question

我是istio的新手。我有一个简单的入口网关yaml文件，侦听端口是26931，但是在应用yaml之后，端口26931不会出现在入口网关公开的端口集中。那么我是否缺少一些必要的步骤或其他内容？

apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
  name: batman-gateway
spec:
  selector:
    istio: ingressgateway
  servers:
  - port:
      number: 26931
      name: http
      protocol: HTTP
    hosts:
    - "*"

Answer 1

您不是通过Gateway对象而是通过istio-ingressgateway服务公开端口。

kubectl edit svc istio-ingressgateway -n istio-system

因此，如果要公开端口26931，则应使用网关服务

  ports:
  - name: http
    nodePort: 30001
    port: 26931
    protocol: TCP
    targetPort: 80

还评论了您以前的帖子-How to configure ingress gateway in istio?

Answer 2

从Istio 1.5.1开始，使用istioctl通过以下命令安装（请参见official doc）：

istioctl manifest apply -f your-overlay-config.yaml

可以在components.ingressGateways文件的your-overlay-config.yaml部分下指定其他端口。例如：

apiVersion: install.istio.io/v1alpha1
kind: IstioOperator
metadata:
  namespace: istio-system
spec:
  components:
    citadel:
      enabled: true
    sidecarInjector:
      enabled: true
    telemetry:
      enabled: true
    ingressGateways:
      - name: istio-ingressgateway
        enabled: true
        k8s:
          service:
            ports:
              # We have to specify original ports otherwise it will be erased
              - port: 15020
                targetPort: 15020
                name: status-port
              - port: 80
                targetPort: 80
                name: http2
              - port: 443
                name: https
              - port: 15029
                targetPort: 15029
                name: kiali
              - port: 15030
                targetPort: 15030
                name: prometheus
              - port: 15031
                targetPort: 15031
                name: grafana
              - port: 15032
                targetPort: 15032
                name: tracing
              - port: 15443
                targetPort: 15443
                name: tls
              - port: 31400
                name: tcp
              # Your additional ports
              - port: 10000
                name: misc
  addonComponents:
    prometheus:
      enabled: false
  values:
    sidecarInjectorWebhook:
      enableNamespacesByDefault: true
    global:
      proxy:
        accessLogFile: "/dev/stdout"
    gateways:
      istio-egressgateway:
        enabled: false
      istio-ingressgateway:
        sds:
          enabled: true

值得注意的是，必须在values.gateways.istio-ingressgateway下指定Istio 1.5和Istio 1.4端口。

Answer 3

在Helm subchart for gateways中完成了端口设置。您可以声明性地在Istio的values.yaml中定义其他端口，而不是直接编辑服务，如下所示。

注意：从Istio v1.2和v1.3.0开始，原始子图中定义的默认端口列表将被覆盖。为了保持默认状态不变，下面的代码段中有一些值被硬拷贝。

gateways:
  istio-ingressgateway:
    ports:
      # Default port list copied from the original subchart values
      # Ref: https://github.com/istio/istio/blob/release-1.2/install/kubernetes/helm/istio/charts/gateways/values.yaml
      # (the ports below overrides the default and does not get merged, and thus needs to be copied here)
      - port: 15020
        targetPort: 15020
        name: status-port
      - port: 80
        targetPort: 80
        name: http2
        nodePort: 31380
      - port: 443
        name: https
        nodePort: 31390
      - port: 15029
        targetPort: 15029
        name: https-kiali
      - port: 15030
        targetPort: 15030
        name: https-prometheus
      - port: 15031
        targetPort: 15031
        name: https-grafana
      - port: 15032
        targetPort: 15032
        name: https-tracing
        # This is the port where sni routing happens
      - port: 15443
        targetPort: 15443
        name: tls
      ##=== Additional Ports =======================##
      - port: 8080
        targetPort: 8080
        name: http-custom
      - port: 8081
        targetPort: 8081
        name: http-custom-backup
      ##____________________________________________##

如何为istio Ingress网关添加自定义端口？

3 个答案: