Workaround for https://github.com/googleforgames/agones/issues/1990. Agones on DockerDesktop k8s and host access.

README.md

# dry-run
bash ./local_agones_forwarder.sh --dry-run true
# apply yaml
bash ./local_agones_forwarder.sh

local_agones_forwarder.sh

#!/bin/bash
set -euo pipefail

# Workaround for https://github.com/googleforgames/agones/issues/1990. Agones on DockerDesktop k8s and host access.

# DockerDesktop ローカル k8s で、Agones の GameServer にホストWindows から接続するための LoadBalancer を作成します。
# see: https://github.com/googleforgames/agones/issues/1990 - Cannot connect to a game server using Docker Desktop (with integrated K8s cluster or Minikube) #1990

# required agones gameserver deployed on local kubernetes.
while [ $# -gt 0 ]; do
    case $1 in
        --namespace) _NAMESPACE=$2; shift 2; ;;
        --dry-run) _DRY_RUN=$2; shift 2; ;;
        *) shift ;;
    esac
done

function create_yaml() {
  gs="${1}"
  name=$(echo "${gs}" | cut -d ' ' -f 1)
  port=$(echo "${gs}" | cut -d ' ' -f 2)
  cat <<EOF
---
apiVersion: v1
kind: Service
metadata:
  name: ${name}
  namespace: "${namespace}"
  labels:
    agones.dev/gameserver: "${name}"
    usage: host-forward
spec:
  type: LoadBalancer
  selector:
    agones.dev/gameserver: "${name}"
  ports:
    - protocol: TCP
      port: ${port}
      targetPort: 2237
EOF
}

namespace=${_NAMESPACE:=agones-gameserver}
if [[ "${_DRY_RUN:=false}" == "true" ]]; then
  kubectl_args="--dry-run=client"
fi

# get gameserver name and port
gameservers=$(kubectl get gs -n "${namespace}" -o jsonpath='{range .items[*]}{@.metadata.name} {@.status.ports[0].port}{"\n"}{end}')

if [[ "${gameservers}" == "" ]]; then
  echo "No gameservers found."
  exit 0
fi

# create yaml
yaml=$(echo "${gameservers[@]}" | while IFS= read -r gs ; do
  create_yaml "${gs}"
done)

# delete old service
svc_names=$(kubectl get svc --selector usage=host-forward -o name)
if [[ "${svc_names}" != "" ]]; then
  kubectl delete ${svc_names} -n "${namespace}" ${kubectl_args:=""}
fi

# create new service
echo "${yaml}" | kubectl apply -f - ${kubectl_args:=""}

# show yaml
if [[ ${_DRY_RUN} == "true" ]]; then
  # show yaml
  echo "${yaml}"
fi