我尝试以lb的比率获得在部署在Google Cloud Kubernetes集群上的2个应用之间的一些基本路由，并且我有以下配置：
apiVersion: v1
kind: Service
metadata:
name: kubeapp
labels:
app: kubeapp
spec:
ports:
- port: 8080
name: http
selector:
app: kubeapp
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: kubeapp-v1
spec:
replicas: 1
template:
metadata:
labels:
app: kubeapp
version: kubeapp-v1
spec:
containers:
- name: kubeapp-v1
image: .......
ports:
- name: kubeapp-v1
containerPort: 8080
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: kubeapp-v2
spec:
replicas: 1
template:
metadata:
labels:
app: kubeapp
version: kubeapp-v2
spec:
containers:
- name: kubeapp-v2
image: .......
ports:
- name: kubeapp-v2
containerPort: 8080
---
apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
name: kubeapp-gateway
spec:
selector:
istio: ingressgateway # use istio default controller
servers:
- port:
number: 80
name: http
protocol: HTTP
hosts:
- "*"
---
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
name: kubeapp
spec:
hosts:
- "*"
gateways:
- kubeapp-gateway
http:
- route:
- destination:
host: kubeapp
port: 8080
效果很好，流量达到50/50，但是当我尝试为lb添加一些基本规则时，例如：
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
name: kubeapp
spec:
hosts:
- "*"
gateways:
- kubeapp-gateway
http:
- route:
- destination:
host: kubeapp
port:
number: 8080
subset: kubeapp-v1
weight: 90
- destination:
host: kubeapp
port:
number: 8080
subset: kubeapp-v2
weight: 10
---
apiVersion: networking.istio.io/v1alpha3
kind: DestinationRule
metadata:
name: kubeapp
spec:
host: kubeapp
subsets:
- name: kubeapp-v1
labels:
version: kubeapp-v1
- name: kubeapp-v2
labels:
version: kubeapp-v2
我得到了upstream connect error or disconnect/reset before headers
我尝试以所有3种模式安装Istio，并将其部署在不同的群集节点大小上（我发现有时Istio在某些特定群集大小上存在一些错误），但没有成功。