phpMyAdmin Cannot log in to the MySQL server on Centos 7

Question

I installed mysql-community-server-8.0.13-1.el7.x86_64 on Centos 7 with Nginx, and added the phpMyAdmin to manage the databases but I keep getting error Cannot log in to the MySQL server from phpMyAdmin. I've tried the following and have been struggling for a few days now:

• Changed some of the parameters (suggested on stackoverflow) located on /etc/phpMyAdmin/config.inc.php like the following but no luck:

  $cfg['Servers'][$i]['host'] = 'localhost';
  $cfg['Servers'][$i]['connect_type'] = 'socket';
  $cfg['Servers'][$i]['socket'] = '/var/lib/mysql/mysql.sock';
  $cfg['Servers'][$i]['user'] = 'root';          
  $cfg['Servers'][$i]['password'] = 'password'; 
  

• I've tried mysql shell, and I'm able to login with root and other users. But, I have no idea why it fails on phpMyAdmin. Please help and thanks!

Solution

I was able to resolve this by doing the following: (I should mention that this solution works for MySQL 8.0.13 and phpMyAdmin 4.8.4 - Both, latest version today)

1- I edited config.inc.php with these server parameters (only):

/*** This is needed for cookie based authentication to encrypt password in 
cookie. Needs to be 32 chars long. */
$cfg['blowfish_secret'] = 'generate_your_blowfish_secret_32_chars'; 

/* Authentication type */
$cfg['Servers'][$i]['auth_type'] = 'cookie';

/* Server parameters */
$cfg['Servers'][$i]['host'] = 'localhost';
$cfg['Servers'][$i]['compress'] = false;
$cfg['Servers'][$i]['AllowNoPassword'] = false;

2- On MySQL terminal

//Create a new user:
mysql> CREATE USER 'user'@'localhost' IDENTIFIED BY 'your_password';

//Grant all privileges:
mysql> GRANT ALL PRIVILEGES ON *.* To 'user'@'localhost' WITH GRANT OPTION;

//Flush all privileges:
mysql> FLUSH PRIVILEGES;

//Change authentication_string with password:
mysql> ALTER USER user IDENTIFIED WITH mysql_native_password BY 
'your_password';

//Login with the new user and password!

This should allow you to login into phpMyAdmin. I hope this help!

Comments

[René Höhle]

Possible duplicate of Can not login to phpmyadmin with root user

[Jacman]

@Stony thanks for the help but it didn't worked.

[Light.G]

Does /var/run/mysqld/mysqlx.sock exist?

[Jacman]

@Light.G Yes, it's there. I guess my option would be to uninstall and reinstall MySQL

[Isaac Bennetch]

When you log in from the command line client, please run the STATUS; command to see the connection type (whether some host "via TCP/IP" or "Localhost via UNIX socket"). Also note the path to the UNIX socket if it's provided. How have you installed phpMyAdmin - through the package manager or by downloading and uncompressing it yourself?

[Jacman]

@IsaacBennetch This is what it shows: Connection:Localhost via UNIX socket and UNIX socket:/var/lib/mysql/mysql.sock and I verified all

[Jacman]

@IsaacBennetch I installed it thru package manager. Thanks!