Reset MySQL forgotten root Password

Step # 1: Stop the MySQL server process.

 [root@testdb1 ~]# /etc/init.d/mysqld stop

Stopping mysqld:                                           [  OK  ]

Step # 2: Start the MySQL (mysqld) server/daemon process with the --skip-grant-tables option so that it will not prompt for a password.

[root@testdb1 ~]# mysqld_safe --skip-grant-tables &

[1] 12703

[root@testdb1 ~]# 2017-07-16T19:08:25.101474Z mysqld_safe Logging to '/var/log/mysqld.log'.

2017-07-16T19:08:25.114178Z mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql

Step # 3: Connect to the MySQL server as the root user.

[root@testdb1 ~]# mysql -u root

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 4

Server version: 5.7.18 MySQL Community Server (GPL)

 Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.

 Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

 Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

 mysql>

Step # 4: Set a new root password and exit

mysql> use mysql;

Reading table information for completion of table and column names

You can turn off this feature to get a quicker startup with -A

Database changed

mysql> update user set authentication_string=PASSWORD("New_Password");

Query OK, 2 rows affected, 1 warning (0.00 sec)

Rows matched: 2  Changed: 2  Warnings: 1

mysql> flush privileges;

Query OK, 0 rows affected (0.00 sec)

mysql> quit

Bye

Step # 5: Restart the MySQL server and Test

[root@testdb1 ~]# /etc/init.d/mysqld stop

2017-07-16T19:28:04.053532Z mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended

Stopping mysqld:                                           [  OK  ]

[1]+  Done                    mysqld_safe --skip-grant-tables

[root@testdb1 ~]# /etc/init.d/mysqld start

Starting mysqld:                                           [  OK  ]

[root@testdb1 ~]# mysql -u root -p

Enter password:

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 6

Server version: 5.7.18 MySQL Community Server (GPL)

 Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.

 Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

 Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

 mysql>

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