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demo3 - 子集

demo3 - 子集

作者: 程序员札记 | 来源:发表于2023-01-11 22:07 被阅读0次

    架构图

    image

    destinationrule-demoapp.yaml

    apiVersion: networking.istio.io/v1beta1
kind: DestinationRule
metadata:
  name: demoapp
spec:
  host: demoapp
  subsets:
  - name: v10
    labels:
      version: v1.0
  - name: v11
    labels:
      version: v1.1

    删除virtualservice-demoapp

    # kubectl delete -f virtualservice-demoapp.yaml 
virtualservice.networking.istio.io "demoapp" deleted

    删除demoappv10 demoapp-v11 svc

    定义子集后不需要demoappv10 demoapp-v11。

    # kubectl delete -f service-demoapp-v10.yaml -f service-demoapp-v11.yaml 
service "demoappv10" deleted
service "demoappv11" deleted

    访问demoapp

    root@client # while true;do curl proxy/hostname; sleep 0.5; done
Proxying value: ServerName: demoappv11-78bf898c74-zzcpv
 - Took 16 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-css28
 - Took 10 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-css28
 - Took 5 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-jmbwx
 - Took 6 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-css28
 - Took 3 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-jmbwx
 - Took 5 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-css28
 - Took 4 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-jmbwx
 - Took 4 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-jmbwx
 - Took 4 milliseconds.
Proxying value: ServerName: demoappv11-78bf898c74-n88v6
 - Took 10 milliseconds.

    查看kiaki

    image

    创建destinationrule-demoapp

    # kubectl apply -f destinationrule-demoapp.yaml 
destinationrule.networking.istio.io/demoapp created

    查看destinationrule-demoapp

    ~# istioctl proxy-config clusters demoappv11-78bf898c74-zzcpv
SERVICE FQDN                                                         PORT      SUBSET     DIRECTION     TYPE             DESTINATION RULE
                                                                     8080      -          inbound       ORIGINAL_DST     
BlackHoleCluster                                                     -         -          -             STATIC           
InboundPassthroughClusterIpv4                                        -         -          -             ORIGINAL_DST     
PassthroughCluster                                                   -         -          -             ORIGINAL_DST     
agent                                                                -         -          -             STATIC           
dashboard-metrics-scraper.kubernetes-dashboard.svc.cluster.local     8000      -          outbound      EDS              
demoapp.default.svc.cluster.local                                    8080      -          outbound      EDS              demoapp.default
demoapp.default.svc.cluster.local                                    8080      v10        outbound      EDS              demoapp.default   # 子集v10
demoapp.default.svc.cluster.local                                    8080      v11        outbound      EDS              demoapp.default   # 子集v11
demoappv10.default.svc.cluster.local                                 8080      -          outbound      EDS              
demoappv11.default.svc.cluster.local                                 8080      -          outbound      EDS              
grafana.istio-system.svc.cluster.local                               3000      -          outbound      EDS              grafana.istio-system
istio-egressgateway.istio-system.svc.cluster.local                   80        -          outbound      EDS              
istio-egressgateway.istio-system.svc.cluster.local                   443       -          outbound      EDS              
istio-ingressgateway.istio-system.svc.cluster.local                  80        -          outbound      EDS              
istio-ingressgateway.istio-system.svc.cluster.local                  443       -          outbound      EDS              
istio-ingressgateway.istio-system.svc.cluster.local                  15021     -          outbound      EDS              
istio-ingressgateway.istio-system.svc.cluster.local                  15443     -          outbound      EDS              
istio-ingressgateway.istio-system.svc.cluster.local                  31400     -          outbound      EDS              
istiod.istio-system.svc.cluster.local                                443       -          outbound      EDS              
istiod.istio-system.svc.cluster.local                                15010     -          outbound      EDS              
istiod.istio-system.svc.cluster.local                                15012     -          outbound      EDS              
istiod.istio-system.svc.cluster.local                                15014     -          outbound      EDS              
jaeger-collector.istio-system.svc.cluster.local                      9411      -          outbound      EDS              
jaeger-collector.istio-system.svc.cluster.local                      14250     -          outbound      EDS              
jaeger-collector.istio-system.svc.cluster.local                      14268     -          outbound      EDS              
kiali.istio-system.svc.cluster.local                                 9090      -          outbound      EDS              kiali.istio-system
kiali.istio-system.svc.cluster.local                                 20001     -          outbound      EDS              kiali.istio-system
kube-dns.kube-system.svc.cluster.local                               53        -          outbound      EDS              
kube-dns.kube-system.svc.cluster.local                               9153      -          outbound      EDS              
kubernetes-dashboard.kubernetes-dashboard.svc.cluster.local          443       -          outbound      EDS              
kubernetes.default.svc.cluster.local                                 443       -          outbound      EDS              
prometheus.istio-system.svc.cluster.local                            9090      -          outbound      EDS              
prometheus_stats                                                     -         -          -             STATIC           
proxy.default.svc.cluster.local                                      80        -          outbound      EDS              
sds-grpc                                                             -         -          -             STATIC           
tracing.istio-system.svc.cluster.local                               80        -          outbound      EDS              
tracing.istio-system.svc.cluster.local                               16685     -          outbound      EDS              
xds-grpc                                                             -         -          -             STATIC           
zipkin                                                               -         -          -             STRICT_DNS       
zipkin.istio-system.svc.cluster.local                                9411      -          outbound      EDS

    virtualservice-demoapp添加子集

    apiVersion: networking.istio.io/v1beta1
kind: VirtualService
metadata:
  name: demoapp
spec:
  hosts:
  - demoapp
  http:
  - name: canary
    match:
    - uri:
        prefix: /canary
    rewrite:
      uri: /
    route:
    - destination:
        host: demoapp
        subset: v11
  - name: default
    route:
    - destination:
        host: demoapp
        subset: v10

    创建virutalservice-demoapp

    # kubectl apply -f virtualservice-demoapp.yaml 
virtualservice.networking.istio.io/demoapp created

    访问demoapp v10子集

    root@client # while true;do curl proxy/hostname; sleep 0.5; done
Proxying value: ServerName: demoappv10-78b6586d58-jmbwx
 - Took 6 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-css28
 - Took 5 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-jmbwx
 - Took 8 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-jmbwx
 - Took 4 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-jmbwx
 - Took 5 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-css28
 - Took 4 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-jmbwx
 - Took 6 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-jmbwx
 - Took 4 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-css28
 - Took 3 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-jmbwx
 - Took 4 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-jmbwx
 - Took 16 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-css28
 - Took 5 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-jmbwx
 - Took 9 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-css28
 - Took 6 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-jmbwx
 - Took 7 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-jmbwx
 - Took 5 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-jmbwx
 - Took 3 milliseconds.
Proxying value: ServerName: demoappv10-78b6586d58-jmbwx
 - Took 5 milliseconds.

    查看kiali

    image image image image

    访问demoapp v11子集

    root@client # while true;do curl proxy/canary; sleep 0.5; done
Proxying value: iKubernetes demoapp v1.1 !! ClientIP: 127.0.0.6, ServerName: demoappv11-78bf898c74-n88v6, ServerIP: 172.20.154.237!
 - Took 11 milliseconds.
Proxying value: iKubernetes demoapp v1.1 !! ClientIP: 127.0.0.6, ServerName: demoappv11-78bf898c74-n88v6, ServerIP: 172.20.154.237!
 - Took 7 milliseconds.
Proxying value: iKubernetes demoapp v1.1 !! ClientIP: 127.0.0.6, ServerName: demoappv11-78bf898c74-n88v6, ServerIP: 172.20.154.237!
 - Took 4 milliseconds.
Proxying value: iKubernetes demoapp v1.1 !! ClientIP: 127.0.0.6, ServerName: demoappv11-78bf898c74-zzcpv, ServerIP: 172.20.44.249!
 - Took 8 milliseconds.
Proxying value: iKubernetes demoapp v1.1 !! ClientIP: 127.0.0.6, ServerName: demoappv11-78bf898c74-n88v6, ServerIP: 172.20.154.237!
 - Took 4 milliseconds.
Proxying value: iKubernetes demoapp v1.1 !! ClientIP: 127.0.0.6, ServerName: demoappv11-78bf898c74-zzcpv, ServerIP: 172.20.44.249!
 - Took 5 milliseconds.
Proxying value: iKubernetes demoapp v1.1 !! ClientIP: 127.0.0.6, ServerName: demoappv11-78bf898c74-n88v6, ServerIP: 172.20.154.237!
 - Took 5 milliseconds.
Proxying value: iKubernetes demoapp v1.1 !! ClientIP: 127.0.0.6, ServerName: demoappv11-78bf898c74-n88v6, ServerIP: 172.20.154.237!
 - Took 5 milliseconds.
Proxying value: iKubernetes demoapp v1.1 !! ClientIP: 127.0.0.6, ServerName: demoappv11-78bf898c74-n88v6, ServerIP: 172.20.154.237!
 - Took 4 milliseconds.
Proxying value: iKubernetes demoapp v1.1 !! ClientIP: 127.0.0.6, ServerName: demoappv11-78bf898c74-zzcpv, ServerIP: 172.20.44.249!
 - Took 5 milliseconds.
Proxying value: iKubernetes demoapp v1.1 !! ClientIP: 127.0.0.6, ServerName: demoappv11-78bf898c74-n88v6, ServerIP: 172.20.154.237!
 - Took 6 milliseconds.
Proxying value: iKubernetes demoapp v1.1 !! ClientIP: 127.0.0.6, ServerName: demoappv11-78bf898c74-zzcpv, ServerIP: 172.20.44.249!
 - Took 6 milliseconds.
Proxying value: iKubernetes demoapp v1.1 !! ClientIP: 127.0.0.6, ServerName: demoappv11-78bf898c74-zzcpv, ServerIP: 172.20.44.249!
 - Took 9 milliseconds.
Proxying value: iKubernetes demoapp v1.1 !! ClientIP: 127.0.0.6, ServerName: demoappv11-78bf898c74-n88v6, ServerIP: 172.20.154.237!
 - Took 8 milliseconds.
Proxying value: iKubernetes demoapp v1.1 !! ClientIP: 127.0.0.6, ServerName: demoappv11-78bf898c74-zzcpv, ServerIP: 172.20.44.249!
 - Took 5 milliseconds.
Proxying value: iKubernetes demoapp v1.1 !! ClientIP: 127.0.0.6, ServerName: demoappv11-78bf898c74-n88v6, ServerIP: 172.20.154.237!
 - Took 4 milliseconds.
Proxying value: iKubernetes demoapp v1.1 !! ClientIP: 127.0.0.6, ServerName: demoappv11-78bf898c74-n88v6, ServerIP: 172.20.154.237!
 - Took 13 milliseconds.
Proxying value: iKubernetes demoapp v1.1 !! ClientIP: 127.0.0.6, ServerName: demoappv11-78bf898c74-n88v6, ServerIP: 172.20.154.237!
 - Took 6 milliseconds.

    查看kiali

    image

    参考文档

    https://istio.io/latest/zh/docs/reference/config/networking/destination-rule/#Subset

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