Solve the problem of MySQL remote login permission

mysql -h localhost -u root
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION;
FLUSH PRIVILEGES;
EXIT
service mysqld restart

The above commands are commonly used , A random knock will always solve the problem

"ACCESS DENIED FOR USER'ROOT'@'localhost'" problem

Finally, you can change the local address to mysql Of user Static allowed in the table ip, Change data mysql Inside that user Table operation permissions, etc