Linux MySQL access denied for user ' root ' @ ' localhost ' (using Password:yes)

After installing MySQL on Linux, use the program connection to report the above error
Workaround, reset the password by following the steps below

1. First stop the original service

Service Mysqld Stop

2. Login using safe Mode, skip password verification

Mysqld_safe--user=mysql--skip-grant-tables--skip-networking&

3. Login

Mysql-uroot  MySQL

4. Change the password

MySQL  > Update user set authentication_string = password (' 123456 ')        = ' root ' and Host = ' localhost '

5. Refresh Permissions

MySQL > Flush privileges;

6. Re-use Normal mode login

#mysql-uroot-123456

Can log in normally.

7. Execute other commands: show databases; Prompt for the following error

You must reset your password using the ALTER USER                 statement   beforethis statement.

8. Re-set the password again

mysql > Set password = password (' 123456 ');

9. Configuration complete.

Linux MySQL access denied for user ' root ' @ ' localhost ' (using Password:yes)