access proxysql 6033 using mysql client sometimes success，sometimes failed？

[lddlww]

sometimes success like follow

mysql -h10.5.111.11 -P6033 -uprog_admin -p1234
mysql>

but sometimes failed return the follow error:

mysql -h10.5.111.11 -P6033 -uprog_admin -p1234
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 1045 (28000): ProxySQL Error: Access denied for user 'prog_admin'@'172.20.1.241' (using password: YES)

and i can't found any exception or error in proxysql.log,
i use mysql client access mysqld directly always return success，
what happend to it?

proxysql version:

ProxySQL version 2.0.10-27-g5b31997, codename Truls

mysqld version

Server version: 5.7.26

mysql client version

mysql  Ver 14.14 Distrib 5.7.26, for el7 (x86_64) using  EditLine wrapper

[renecannao]

Hi,

The backend is not relevant in this issue.
It is proxysql that is returning an error, saying that the client is (probably) providing an incorrect credential.
Can you reproduce this with the latest version of ProxySQL ?