Skip to content

istio.md

Latest commit

 

History

History
149 lines (109 loc) · 3.05 KB

istio.md

File metadata and controls

149 lines (109 loc) · 3.05 KB

istio

바로가기

  1. VirtualService 예시
  2. DestinationRule 예시
  3. Gateway 예시
  4. ServiceEntry 예시

BOOKINFO-istio 설정

virtualService:

destinationRule

gatway:

ServiceEntry

EgressGateway

VirtualService

  • 트레픽에 대한 서비스 라우팅 경로 설정
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: bookinfo # VirtualService 이름
spec:
  hosts:
   - "bookinfo.172.22.11.21.nip.io" # ex)  서비스 주소: 서비스명.NAMESAPCE명.svc.cluster.local / www.tmaxcloud.org 
  gateways:
  - bookinfo-gateway # "설정한 게이트웨이"
  http:  # Routing 규칙
    - name: rating
        match:
        - uri:
            prefix: /api/rating
        route:
        # 카나리 배포 설정 (50대 50)
        - destination:
            host: bookinfo-rating
            port:
              number: 8080
            subset: v1 # DestinationRule.subsets 참조
          weight: 50 
        - destination:
            host: bookinfo-rating
            port:
              number: 8080
            subset: v2
          weight: 50

DestinationRule

  • VirtualService에서 사용될 트레픽 정책 수립
    • rating을 v1과 v2로 분리, 50 대 50으로 loadbalancing
apiVersion: networking.istio.io/v1alpha3
kind: DestinationRule
metadata:
  name: ratings
spec:
  host: bookinfo-rating
  subsets:
  - name: v1
    labels:
      version: v1
  - name: v2
    labels:
      version: v2

Gateway

  • 외부로부터 트래픽 받는 최전선.
    • 트래픽을 받을 host이름과 포트번호, 프로토콜 정의
apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
  name: bookinfo-gateway
spec:
  selector:
    app: istio-ingressgateway
  servers:
  - port:
      number: 80
      name: http
      protocol: HTTP
    hosts:
    - "bookinfo.172.22.11.21.nip.io"

ServiceEntry

  • 외부 서비스 등록하기
apiVersion: networking.istio.io/v1alpha3
kind: ServiceEntry
metadata:
  name: external-payment
spec:
  hosts:
  - bookinfo-payment.bookinfo-ext.svc.cluster.local
  location: MESH_EXTERNAL
  ports:
  - name: http
    number: 8080
    protocol: HTTP
  resolution: DNS