Envoy HTTP流量管理 故障注入

故障注入：

注入延迟：

{
"type": "...", # 类型， 即将弃用；
"fixed_delay": "{...}", # 持续时长， 将请求转发至上游主机之前添加固定延迟；
"header_delay": "{...}", # 基于HTTP标头的指定控制故障延迟；
"percentage": "{...}" # 将注入迟延的 操作/连接/请求（ operations/connections/requests） 的百分比，
# 即将错误注入到多大比例的请求操作上；
}

注入请求终止：

{
"http_status": "...", # 用于中止HTTP请求的状态码， 必选参数；
"percentage": "{...}" # 将使用的错误代码中止的 请求/操作/连接 的百分比；
}

响应报文的速率限制：

{
"fixed_limit": "{"limit_kbps": ...}", # 固定速率， 单位KiB/s；
"header_limit": "{...}", # 限制为HTTP首部的指定的速率；
"percentage": "{...}" # 将注入的速率限制为 操作/连接/请求（ operations/connections/requests） 的百分比；
}

注入请求终止：

admin:
  access_log_path: "/dev/null"
  address:
    socket_address:
      address: 0.0.0.0
      port_value: 9901

static_resources:
  listeners:
  - address:
      socket_address:
        address: 0.0.0.0
        port_value: 80
    filter_chains:
    - filters:
      - name: envoy.http_connection_manager
        typed_config:
          "@type": type.googleapis.com/envoy.config.filter.network.http_connection_manager.v2.HttpConnectionManager
          codec_type: auto
          stat_prefix: ingress_http
          route_config:
            name: local_route
            virtual_hosts:
            - name: service
              domains:
              - "*"
              routes:
              - match:
                  prefix: "/"
                route:
                  cluster: local_service
          http_filters:
          - name: envoy.fault
            config:
              abort:
                http_status: 503 # 响应码
                percentage:
                  numerator: 10 # 故障比例为10/hundred
                  denominator: HUNDRED
          - name: envoy.router
            config: {}

  clusters:
  - name: local_service
    connect_timeout: 0.25s
    type: strict_dns
    lb_policy: round_robin
    load_assignment:
      cluster_name: local_service
      endpoints:
      - lb_endpoints:
        - endpoint:
            address:
              socket_address:
                address: 127.0.0.1
                port_value: 8080

注入延迟：

admin:
  access_log_path: "/dev/null"
  address:
    socket_address:
      address: 0.0.0.0
      port_value: 9901

static_resources:
  listeners:
  - address:
      socket_address:
        address: 0.0.0.0
        port_value: 80
    filter_chains:
    - filters:
      - name: envoy.http_connection_manager
        typed_config:
          "@type": type.googleapis.com/envoy.config.filter.network.http_connection_manager.v2.HttpConnectionManager
          codec_type: auto
          stat_prefix: ingress_http
          route_config:
            name: local_route
            virtual_hosts:
            - name: service
              domains:
              - "*"
              routes:
              - match:
                  prefix: "/"
                route:
                  cluster: local_service
          http_filters:
          - name: envoy.fault
            config:
              delay:
                type: fixed
                fixed_delay: 10s # 延迟时间
                percentage:
                  numerator: 10 # 延迟比率 10/handred
                  denominator: HUNDRED
          - name: envoy.router
            config: {}

  clusters:
  - name: local_service
    connect_timeout: 0.25s
    type: strict_dns
    lb_policy: round_robin
    load_assignment:
      cluster_name: local_service
      endpoints:
      - lb_endpoints:
        - endpoint:
            address:
              socket_address:
                address: 127.0.0.1
                port_value: 8080