VS故障注入

1.VirtualService故障注入介绍

故障注入在vs的fault字段定义。

1.1.abort: 中断故障注入

percentage: 故障百分比--在value里指定具体数值，用于指定故障百分比，比如写100的话，则是所有访问都是故障

httpStatus：模拟错误，返回的错误代码

1.2.delay: 延迟故障注入

percentage: 故障百分比--在value里指定具体数值，用于指定故障百分比，比如写100的话，则是所有访问都是故障

fixedDelay：用于设置延迟多久回应

2.配置

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: myvs2
spec:
  hosts:
  - "bb.xiebo.pro"
  gateways:
  - mygw
  http:
  - fault:
  #延时
    #delay: 
    #   percent: 100
    #    fixedDelay: 1s
  #中断
      abort:
        percentage:
          value: 100
        httpStatus: 503
    route:
    - destination:
        host: svc2

3.响应超时设置

apiVersion: networking.istio.io/v1alpha3 
kind: VirtualService 
metadata: 
  name: myvs1 
spec: 
  hosts: 
  - "aa.xiebo.pro" 
  gateways: 
  - mygw 
  http: 
  - route: 
    - destination: 
        host: svc1 
    timeout: 1s

4.失败重试

apiVersion: networking.istio.io/v1alpha3 
kind: VirtualService 
metadata: 
  name: myvs1 
spec: 
  hosts: 
  - "aa.xiebo.pro" 
  gateways: 
  - mygw 
  http: 
  - route: 
    - destination: 
        host: svc1 
    timeout: 1s 
    retries: 
      #重试次数
      attempts: 3
      #重试超时时间 
      perTryTimeout: 10s
      #重试触发状态码 
      retryOn: 5xx

5.流量镜像

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: myvs
spec:
  hosts:
  - "aa.xiebo.pro"
  gateways:
  - mygw
  http:
  - route:
    - destination:
        host: svc1
    mirror:
        host: svc2