(using password: NO) when trying to connect,mysqldump: [Warning] Using a password on the command line interface can be insecure,mysqldump Export error,linux export mysql database error mysqldump:got error:1045

mysqld Ver 5.7.24 for Linux on x86_64 (MySQL Community Server (GPL))

Edit mysql configuration file

vim /etc/my.cnf

Analysis of reasons:
Verify that the username and password are correct. The password contains special symbols (such as ~! @$%^& *()_ etc.) Remember to wrap the “password” in quotation marks, or consider changing the password to try to locate the problem.