专有云 tunnel 打洞方式放开 2881 端口，命令行登录 OBServer 报错 ERROR 2013 (HY000): Lost connection to MySQL server at 'reading authorization packet', system error: 11 的原因和解决方法

# obclient -h192.168.xxx.xxx -uroot@sys -P2881 -A -c
ERROR 2013 (HY000): Lost connection to MySQL server at 'reading authorization packet', system error: 11

observer.log.20240814182008912:[2024-08-14 18:14:02.592981] INFO  [RPC.OBMYSQL] init (obsm_conn_callback.cpp:141) [11953][sql_nio9][T0][Y0-0000000000000000-0-0] [lt=13] sm conn init succ(conn.sessid_=3221887793, sess.client_addr_="172.xxx.xxx.xxx:41xx")
observer.log.20240814182008912:[2024-08-14 18:14:02.595896] INFO  [LIB] get_virtual_addr (ob_vtoa_util.cpp:107) [11953][sql_nio9][T0][Y0-0000000000000000-0-0] [lt=13] SLB connect(protocol=6, fd=784, vid=3549824, vaddr="192.168.xxx.xxx:2881", caddr="172.xxx.xxx.xxx:41xx", daddr="10.xx.xx.xx:2881")
observer.log.20240814182008912:[2024-08-14 18:14:02.595908] WARN  get_user_tenant (ob_srv_deliver.cpp:206) [11953][sql_nio9][T0][Y0-0000000000000000-0-0] [lt=12][errcode=-4147] Invalid config(msg="connect from LB, but tenant_name is not empty")

alter system set _endpoint_tenant_mapping = '[{"vid": xxxxx, "vip": "192.168.xxx.xxx", "vport": 2881, "cluster_name": "<cluster_name>", "tenant_name": "<tenant_name>"}]';