注入延迟

通过向服务调用注入延迟，可以测试服务通信不畅的后果。

1. 注入延迟

virtualservice.networking.istio.io/nginx-default-v2 configured
root@istio1:~/ver# cat vs.yaml 
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: nginx-default-v2
  namespace: version
spec:
  hosts:
  - "hello.lizhe.com"
  gateways:
  - nginx-gateway
  http:
  - route:
    - destination:
        host: nginx-service.version.svc.cluster.local
        subset: v2
    fault:
      delay:
        fixedDelay: 7s
        percentage:
          value: 100