Mysql skip-grant-tables gives access denied message after password change - mysql

Question

After changing mysql password, I did executed skip-grant-tables, so when I try to login to mysql without password I cannot login. It gives access denied message. Why is that
Following are the steps I did. First I installed mysql and changed the password
1) sudo yum install mysql-community-server
2) sudo service mysqld start
3) sudo grep 'temporary password' /var/log/mysqld.log
4) mysql -uroot -p
5) ALTER USER 'root'#'localhost' IDENTIFIED BY 'MyNewPass4!';
Then tried to login with skip grant tables
6) sudo service mysqld stop
7) mysqld_safe --skip-grant-tables &
Now I get Access denied message

Answer 1

I recently upgrade my Ubuntu 16.04 to 18.04 and this has worked for me:
First, connect in sudo mysql
sudo mysql -u root
Check your accounts present in your db
SELECT User,Host FROM mysql.user;
+------------------+-----------+
| User | Host |
+------------------+-----------+
| admin | localhost |
| debian-sys-maint | localhost |
| magento_user | localhost |
| mysql.sys | localhost |
| root | localhost |
Delete current root#localhost account
mysql> DROP USER 'root'#'localhost';
Query OK, 0 rows affected (0,00 sec)
Recreate your user
mysql> CREATE USER 'root'#'%' IDENTIFIED BY '';
Query OK, 0 rows affected (0,00 sec)
Give permissions to your user (don't forget to flush privileges)
mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'#'%' WITH GRANT OPTION;
Query OK, 0 rows affected (0,00 sec)
mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0,01 sec)
Exit MySQL and try to reconnect without sudo.
This will make you login.