Simple static envoy config for external kubernetes load balancer

envoy-external-lb-dynamic.yaml

static_resources:
  listeners:
  - address:
      socket_address:
        address: 0.0.0.0
        port_value: 80
    filter_chains:
    - filters:
      - name: envoy.tcp_proxy
        config:
          stat_prefix: external_lb
          cluster: k8s_worker_nodes
  - address:
      socket_address:
        address: 0.0.0.0
        port_value: 443
    filter_chains:
    - filters:
      - name: envoy.tcp_proxy
        config:
          stat_prefix: external_lb_tls
          cluster: k8s_worker_nodes_tls
  clusters:
  - name: k8s_worker_nodes
    connect_timeout: 0.25s
    type: EDS
    lb_policy: round_robin
    eds_cluster_config:
      eds_config:
        api_config_source:
          api_type: GRPC
          grpc_services:
            envoy_grpc:
              cluster_name: xds_cluster
  - name: k8s_worker_nodes_tls
    connect_timeout: 0.25s
    type: EDS
    lb_policy: round_robin
    eds_cluster_config:
      eds_config:
        api_config_source:
          api_type: GRPC
          grpc_services:
            envoy_grpc:
              cluster_name: xds_cluster
  - name: xds_cluster
    connect_timeout: 0.25s
    type: STRICT_DNS
    lb_policy: ROUND_ROBIN
    http2_protocol_options: {}
    load_assignment:
      cluster_name: xds_cluster
      endpoints:
      - lb_endpoints:
        - endpoint:
            address:
              socket_address:
                address: xds.example.com
                port_value: 5000
admin:
  access_log_path: "/dev/null"
  address:
    socket_address:
      address: 0.0.0.0
      port_value: 8001

envoy-external-lb-static.yaml

static_resources:
  listeners:
  - address:
      socket_address:
        address: 0.0.0.0
        port_value: 80
    filter_chains:
    - filters:
      - name: envoy.tcp_proxy
        config:
          stat_prefix: external_lb
          cluster: k8s_worker_nodes
  - address:
      socket_address:
        address: 0.0.0.0
        port_value: 443
    filter_chains:
    - filters:
      - name: envoy.tcp_proxy
        config:
          stat_prefix: external_lb_tls
          cluster: k8s_worker_nodes_tls
  clusters:
  - name: k8s_worker_nodes
    connect_timeout: 0.25s
    type: strict_dns
    lb_policy: round_robin
    hosts:
    - socket_address:
        address: 10.10.0.41
        port_value: 30080
    - socket_address:
        address: 10.10.0.42
        port_value: 30080
    - socket_address:
        address: 10.10.0.43
        port_value: 30080
  - name: k8s_worker_nodes_tls
    connect_timeout: 0.25s
    type: strict_dns
    lb_policy: round_robin
    hosts:
    - socket_address:
        address: 10.10.0.41
        port_value: 30443
    - socket_address:
        address: 10.10.0.42
        port_value: 30443
    - socket_address:
        address: 10.10.0.43
        port_value: 30443
admin:
  access_log_path: "/dev/null"
  address:
    socket_address:
      address: 0.0.0.0
      port_value: 8001