Solution to MySQL encounters 'Access denied for user' problem
How to solve the MySQL "Access denied for user" error: 1. Check the user's permission to connect to the database; 2. Reset the password; 3. Allow remote connections; 4. Refresh permissions; 5. Check the database server configuration (bind-address, skip-grant-tables); 6. Check the firewall rules; 7. Restart the MySQL service. Tip: Make changes after backing up the database.
How to solve the problem of "Access denied for user" in MySQL
question:
How to solve it when encountering MySQL "Access denied for user" error?
Solution:
1. Check user permissions
- Confirm the name of the database to be connected.
- Check whether the user has permission to connect to the database. You can view it by executing the following query:
SHOW GRANTS FOR 'username';
2. Reset password
- If you forget your password, you can reset it using the
ALTER USER
command. For example:ALTER USER 'username' IDENTIFIED BY 'newPassword';
3. Allow remote connections
- If you are trying to connect from a remote computer, make sure that the user is granted
GRANT ... ON *.* TO 'username'@'remote_host' IDENTIFIED BY 'password';
permissions.
4. Refresh permissions
- After making any permission changes, refresh the permissions using the following command:
FLUSH PRIVILEGES;
5. Check the database server configuration
-
Make sure the MySQL server is correctly configured with the following:
-
bind-address
: should be set to0.0.0.0
to allow remote connections. -
skip-grant-tables
: should be set toOFF
to enable permission checking.
-
6. Check the firewall rules
-
Make sure that the firewall is not blocking connections to the MySQL server. Allow connection to the following ports:
- 3306 (default)
- 33060 (for SSL connection)
7. Restart MySQL service
- After any changes are made, restart the MySQL service to ensure the changes take effect.
hint:
- Be sure to back up your database before making any changes.
- If you are still experiencing problems, please check the MySQL manual or seek professional help.
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