$ cat large_bootstrap_maker.sh 
#!/bin/bash

set -u
set -e
limit="$1"

for i in $(seq 1 $limit); do
  service="zzzzzzz-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx_$i"
  echo "  - name: $service"
  echo "    connect_timeout: 0.25s"
  echo "    type: LOGICAL_DNS"
  echo "    dns_lookup_family: \"v6_only\""
  echo "    lb_policy: ROUND_ROBIN"
  echo "    load_assignment:"
  echo "      cluster_name: $service"
  echo "      endpoints:"
  echo "      - lb_endpoints:"
  echo "        - endpoint:"
  echo "            address: {socket_address: {address: google.com, port_value: 443}}"
done

admin:
  access_log:
  - name: envoy.access_loggers.file
    typed_config:
      "@type": type.googleapis.com/envoy.extensions.access_loggers.file.v3.FileAccessLog
      path: "/dev/null"
  address:
    socket_address:
      address: "::"
      port_value: 8080
layered_runtime:
  layers:
  - name: admin
    admin_layer: {}

static_resources:
  listeners:
  - name: listener_0
    address:
      socket_address:
        address: "::"
        port_value: 0
    filter_chains:
    - filters:
      - name: http
        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: local_route
            virtual_hosts:
            - name: local_service
              domains: ["*"]
              routes:
              - match: {prefix: "/"}
                route: {host_rewrite_literal: 127.0.0.1, cluster: yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy-wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww}
  clusters:

bash large_bootstrap_maker.sh 100000 >> base.yaml
mv base.yaml test/config/integration/100k_clusters.yaml