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external-google.yaml
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external-google.yaml
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apiVersion: networking.istio.io/v1alpha3
kind: ServiceEntry
metadata:
name: google
spec:
hosts:
- developers.google.com
ports:
- number: 80
name: http
protocol: HTTP
- number: 443
name: https
protocol: HTTPS
resolution: DNS
---
apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
name: istio-google-egressgateway
spec:
selector:
istio: egressgateway # use Istio default gateway implementation
servers:
- port:
number: 80
name: https-port-for-tls-origination
protocol: HTTPS
hosts:
- developers.google.com
tls:
mode: ISTIO_MUTUAL
---
# Routes internal outbound traffic to the egress gateway using Istio's mTLS
apiVersion: networking.istio.io/v1alpha3
kind: DestinationRule
metadata:
name: egressgateway-for-google
spec:
host: istio-egressgateway.istio-system.svc.cluster.local
subsets:
- name: google
trafficPolicy:
portLevelSettings:
- port:
number: 80
tls:
mode: ISTIO_MUTUAL
sni: developers.google.com
---
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
name: direct-google-through-egress-gateway
spec:
hosts:
- developers.google.com
gateways:
- istio-google-egressgateway
- mesh
# route HTTP traffic to developers.google.com through the egress gateway for the entire mesh
http:
- match:
- gateways:
- mesh # apply to sidecars in the mesh
port: 80
route:
- destination:
host: istio-egressgateway.istio-system.svc.cluster.local
subset: google
port:
number: 80
# at the egress gateway, route developers.google.com to the real destination outside the mesh
- match:
- gateways:
- istio-google-egressgateway
port: 80
route:
- destination:
host: developers.google.com
port:
number: 443
weight: 100
---
apiVersion: networking.istio.io/v1alpha3
kind: DestinationRule
metadata:
name: originate-tls-for-developers-google-com
spec:
host: developers.google.com
trafficPolicy:
loadBalancer:
simple: ROUND_ROBIN
portLevelSettings:
- port:
number: 443
tls:
mode: SIMPLE # initiates HTTPS for connections to developers.google.com