错误：1045：尝试连接时，用户'user'@'123.10.123.123'的访问被拒绝（使用密码：否）

Question

I am trying to get a local snapshot of a database by running this command:

mysqldump --single-transaction --quick -u user -ppass -h somehost db_name | mysql -u user -ppass -h localhost db_name

Even though this has worked for me in the past, I am now getting this error back:

error: 1045: Access denied for user 'user'@'123.10.123.123' (using password: NO) when trying to connect

I can successfully log in with the username and password above:

mysql -u user -ppass -h localhost

and I have previously granted privileges to the user for the local database, eg

grant all on db_name.* to user;

I also find it strange that the error message is returning user@my_ip_address instead of user@localhost when I have specified localhost as the host. I'm also confused as to why it says using password: NO, as I've also provided a password.

Answer 1

It turns out that the remote host that I was attempting to download from had changed. Using the correct new hostname solved the problem.