MySQL fails on: mysql “ERROR 1524 (HY000): Plugin 'auth_socket' is not loaded”

Question

My local environment is:

• fresh Ubuntu 16.04
• with PHP 7

• with installed MySQL 5.7

  sudo apt-get install mysql-common mysql-se         
  
  
          

Answer 1

For Ubuntu 18.04 and mysql 5.7

• step 1: sudo mkdir /var/run/mysqld;

  step 2: sudo chown mysql /var/run/mysqld

  step 3: sudo mysqld_safe --skip-grant-tables & quit (use quit if its stuck )

login to mysql without password

• step 4: sudo mysql --user=root mysql

  step 5: SELECT user,authentication_string,plugin,host FROM mysql.user;

  step 6: ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'root'

now login with

• mysql -u root -p <root>

Answer 2

You can try with the below commands:

hduser@master:~$ sudo /etc/init.d/mysql stop
[ ok ] Stopping mysql (via systemctl): mysql.service.
hduser@master:~$ sudo /etc/init.d/mysql start
[ ok ] Starting mysql (via systemctl): mysql.service.

Answer 3

I tried with and it works

use mysql; # use mysql table
update user set authentication_string="" where User='root'; 

flush privileges;
quit;