The problem is the agola-configstore is not listening on port 4002:
root@agola-gateway-others-7866556766-2bhdz:/# telnet agola-configstore 4002
Trying 10.98.22.112...
telnet: Unable to connect to remote host: Connection refused
kubectl exec -it agola-configstore-659887b86d-sgtfn bash ──(Wed,Feb12)─┘
root@agola-configstore-659887b86d-sgtfn:/# ss -tnlp
Netid State Recv-Q Send-Q Local Address:Port Peer Address:Port
root@agola-configstore-659887b86d-sgtfn:/#