SQLSTATE[HY000] [1045] Access denied for user 'username'@'localhost' using CakePHP

The Solution to SQLSTATE[HY000] [1045] Access denied for user 'username'@'localhost' using CakePHP is

That error message usually means that either the password we are using doesn't match what MySQL thinks the password should be for the user we're connecting as, or a matching MySQL user doesn't exist (hasn't been created).

In MySQL, a user is identified by both a username ("test2") and a host ("localhost").

The error message identifies the user ("test2") and the host ("localhost") values...


We can check to see if the user exists, using this query from a client we can connect from:

 SELECT user, host FROM mysql.user

We're looking for a row that has "test2" for user, and "localhost" for host.

 user     host       
 -------  -----------
 test2  cleanup
 test2     ::1        
 test2     localhost  

If that row doesn't exist, then the host may be set to wildcard value of %, to match any other host that isn't a match.

If the row exists, then the password may not match. We can change the password (if we're connected as a user with sufficient privileges, e.g. root

 SET PASSWORD FOR 'test2'@'localhost' = PASSWORD('mysecretcleartextpassword')

We can also verify that the user has privileges on objects in the database.

 GRANT SELECT ON jobs.* TO 'test2'@'localhost' 


If we make changes to mysql privilege tables with DML operations (INSERT,UPDATE,DELETE), those changes will not take effect until MySQL re-reads the tables. We can make changes effective by forcing a re-read with a FLUSH PRIVILEGES statement, executed by a privileged user.

~ Answered on 2015-07-01 06:55:01

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