Istio超时与延迟注入策略的envoy配置

超时控制

$ kubectl apply -f - <<EOF
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: reviews
spec:
  hosts:
  - reviews
  http:
  - route:
    - destination:
        host: reviews
        subset: v2
    timeout: 0.5s  《《《《《《
EOF

对应的envoy配置

"route": {
                            "cluster": "outbound|9080|v2|reviews.istio-bookinfo.svc.cluster.local",
                            "timeout": "0.500s", 《《《《《《《《《！！！！
                            "retryPolicy": {
                                "retryOn": "connect-failure,refused-stream,unavailable,cancelled,retriable-status-codes",
                                "numRetries": 2,
                                "retryHostPredicate": [
                                    {
                                        "name": "envoy.retry_host_predicates.previous_hosts"
                                    }
                                ],
                                "hostSelectionRetryMaxAttempts": "5",
                                "retriableStatusCodes": [
                                    503
                                ]
                            },
                            "maxGrpcTimeout": "0.500s"
                        },

延迟控制设置策略

$ kubectl apply -f - <<EOF
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: ratings
spec:
  hosts:
  - ratings
  http:
  - fault:
      delay:
        percent: 100
        fixedDelay: 2s
    route:
    - destination:
        host: ratings
        subset: v1
EOF

对应的envoy配置

                        "typedPerFilterConfig": {
                            "envoy.fault": {
                                "@type": "type.googleapis.com/envoy.config.filter.http.fault.v2.HTTPFault",
                                "delay": {
                                    "fixedDelay": "1s",
                                    "percentage": {
                                        "numerator": 50
                                    }
                                }
                            }