clnt_create: RPC: Port mapper failure - Unable to receive: errno 111 (Connection refused)

clnt_create: RPC: Port mapper failure - Unable to receive: errno 111 (Connection refused)

关闭防火墙，可以连，

#showmount -e  10.XXX.XXX17

Export list for 10.XXX.XXX17:
/data 10.XXX.XXX.18

开启防火墙端口：

#firewalld-cmd --add-port=111/udp