envoy-configmap.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: envoy-configmap
  namespace: monitoring
data:
  envoy.yaml: |

    overload_manager:
      refresh_interval: 0.25s
      resource_monitors:
      - name: "envoy.resource_monitors.fixed_heap"
        typed_config:
          "@type": type.googleapis.com/envoy.extensions.resource_monitors.fixed_heap.v3.FixedHeapConfig
          # TODO: Tune for your system.
          max_heap_size_bytes: 4294967296  # 4 GiB
      actions:
      - name: "envoy.overload_actions.shrink_heap"
        triggers:
        - name: "envoy.resource_monitors.fixed_heap"
          threshold:
            value: 0.95
      - name: "envoy.overload_actions.stop_accepting_requests"
        triggers:
        - name: "envoy.resource_monitors.fixed_heap"
          threshold:
            value: 0.98

    admin:
      access_log_path: /dev/stdout
      address:
        socket_address: { address: 0.0.0.0, port_value: 9901 }

    static_resources:
      listeners:
      - name: listener_0
        address:
          socket_address: { address: 0.0.0.0, port_value: 10000 }
        filter_chains:
        - filters:
          - name: envoy.filters.network.http_connection_manager
            typed_config:
              "@type": type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
              stat_prefix: ingress_http
              codec_type: AUTO
              route_config:
                name: envoy_pgw_route
                virtual_hosts:
                - name: envoy_pgw_service
                  domains: ["*"]
                  routes:
                  - match:
                      prefix: "/"
                    route:
                      cluster: pgw_service
                      hash_policy:
                        - header:
                            header_name: ":path"
              http_filters:
              - name: envoy.filters.http.router
                typed_config:
                  "@type": type.googleapis.com/envoy.extensions.filters.http.router.v3.Router

      clusters:
      - name: pgw_service
        connect_timeout: 5.25s
        type: STRICT_DNS
        lb_policy: MAGLEV
        load_assignment:
          cluster_name: pgw_service
          endpoints:
          - lb_endpoints:
            - endpoint:
                address:
                  socket_address:
                    address: pgw.monitoring.svc.cluster.local
                    port_value: 9091