phpMyAdmin on MySQL 8.0 [duplicate] - mysql

Question

This question already has answers here:
Access denied after setting user's password with SHA256 in phpMyAdmin
(3 answers)
Closed 3 years ago.
UPDATE
Newer versions of phpMyAdmin solved this issue. I've successfully tested with phpMyAdmin 5.0.1
I have installed the MySQL 8.0 server and phpMyAdmin, but when I try to access it from the browser the following errors occur:
#2054 - The server requested authentication method unknown to the client
mysqli_real_connect(): The server requested authentication method unknown to the client [caching_sha2_password]
mysqli_real_connect(): (HY000/2054): The server requested authentication method unknown to the client
I imagine it must have something to do with the strong passwords implemented and the relative freshness of the MySQL release.
But I know nothing of the most advanced driver and connection configuration.
Has someone faced the same problem and solved it? :D

Answer 1

Log in to MySQL console with root user:
root#9532f0da1a2a:/# mysql -u root -pPASSWORD
and change the Authentication Plugin with the password there:
mysql> ALTER USER root IDENTIFIED WITH mysql_native_password BY 'PASSWORD';
Query OK, 0 rows affected (0.08 sec)
You can read more info about the Preferred Authentication Plugin on the MySQL 8.0 Reference Manual
https://dev.mysql.com/doc/refman/8.0/en/upgrading-from-previous-series.html#upgrade-caching-sha2-password
It is working perfectly in a dockerized environment:
docker run --name mysql -e MYSQL_ROOT_PASSWORD=PASSWORD -p 3306:3306 -d mysql:latest
docker exec -it mysql bash
mysql -u root -pPASSWORD
ALTER USER root IDENTIFIED WITH mysql_native_password BY 'PASSWORD';
exit
exit
docker run --name phpmyadmin -d --link mysql:db -p 8080:80 phpmyadmin/phpmyadmin:latest
So you can now log in to phpMyAdmin on http://localhost:8080 with root / PASSWORD
mysql/mysql-server
If you are using mysql/mysql-server docker image
But remember, it is just a 'quick and dirty' solution in the development environment. It is not wise to change the MySQL Preferred Authentication Plugin.
docker run --name mysql -e MYSQL_ROOT_PASSWORD=PASSWORD -e MYSQL_ROOT_HOST=% -p 3306:3306 -d mysql/mysql-server:latest
docker exec -it mysql mysql -u root -pPASSWORD -e "ALTER USER root IDENTIFIED WITH mysql_native_password BY 'PASSWORD';"
docker run --name phpmyadmin -d --link mysql:db -p 8080:80 phpmyadmin/phpmyadmin:latest
Updated solution at 10/04/2018
Change the MySQL default authentication plugin by uncommenting the default_authentication_plugin=mysql_native_password setting in /etc/my.cnf
use at your own risk
docker run --name mysql -e MYSQL_ROOT_PASSWORD=PASSWORD -e MYSQL_ROOT_HOST=% -p 3306:3306 -d mysql/mysql-server:latest
docker exec -it mysql sed -i -e 's/# default-authentication-plugin=mysql_native_password/default-authentication-plugin=mysql_native_password/g' /etc/my.cnf
docker stop mysql; docker start mysql
docker run --name phpmyadmin -d --link mysql:db -p 8080:80 phpmyadmin/phpmyadmin:latest
Updated workaround at 01/30/2019
docker run --name mysql -e MYSQL_ROOT_PASSWORD=PASSWORD -e MYSQL_ROOT_HOST=% -p 3306:3306 -d mysql/mysql-server:latest
docker exec -it mysql sed -i -e 's/# default-authentication-plugin=mysql_native_password/default-authentication-plugin=mysql_native_password/g' /etc/my.cnf
docker exec -it mysql mysql -u root -pPASSWORD -e "ALTER USER root IDENTIFIED WITH mysql_native_password BY 'PASSWORD';"
docker stop mysql; docker start mysql
docker run --name phpmyadmin -d --link mysql:db -p 8080:80 phpmyadmin/phpmyadmin:latest
default_authentication_plugin
Updated solution at 09/13/2021
ALTER USER 'root'#'localhost' IDENTIFIED WITH mysql_native_password BY 'password';
exactly with quotes *

Answer 2

New MySQL 8.0.11 is using caching_sha2_password as default authentication method. I think that phpMyAdmin cannot understand this authentication method.
You need to create user with one of the older authentication method, e.g. CREATE USER xyz#localhost IDENTIFIED WITH mysql_native_password BY 'passw0rd'.
More here https://dev.mysql.com/doc/refman/8.0/en/create-user.html and here https://dev.mysql.com/doc/refman/8.0/en/authentication-plugins.html

Answer 3

mysql> ALTER USER 'root'#'localhost' IDENTIFIED WITH mysql_native_password BY 'rootpassword';
Login through the command line, it will work after that.

Answer 4

I solved this issue by doing the following:
Add default_authentication_plugin = mysql_native_password to the
[mysqld] section of my.cnf
Enter mysql and create a new user by doing something like CREATE USER
'root'#'localhost' IDENTIFIED BY 'password';
Grant privileges as necessary. E.g. GRANT ALL PRIVILEGES ON * . * TO
'root'#'localhost'; and then FLUSH PRIVILEGES;
Login into phpmyadmin with new user

Answer 5

Another idea: as long as the phpmyadmin and other php tools don't work with it, just add this line to your file /etc/mysql/my.cnf
default_authentication_plugin = mysql_native_password
See also:
Mysql Ref
I know that this is a security issue, but what to do if the tools don't work with caching_sha2_password?

Answer 6

I went to system
preferences -> mysql -> initialize database -> use legacy password encryption(instead of strong) -> entered same password
as my config.inc.php file, restarted the apache server and it worked. I was still suspicious about it so I stopped the apache and mysql server and started them again and now it's working.

Answer 7

I solved my problem basically with András answer:
1- Log in to MySQL console with root user:
root#9532f0da1a2a:/# mysql -u root -pPASSWORD
And type the root's password to auth.
2- I created a new user:
mysql> CREATE USER 'user'#'hostname' IDENTIFIED BY 'password';
3- Grant all privileges to the new user:
mysql> GRANT ALL PRIVILEGES ON *.* To 'user'#'hostname';
4- Change the Authentication Plugin with the password:
mysql> ALTER USER user IDENTIFIED WITH mysql_native_password BY 'PASSWORD';
Now, phpmyadmin works fine logging the new user.

Answer 8

To fix this issue I just run one query in my mysql console.
For this login to mysql console using this
mysql -u {username} -p{password}
After this I just run one query as given below:-
ALTER user '{USERNAME}'#'localhost' identified with mysql_native_password by '{PASSWORD}';
when I run this query I got message that query executed. Then login to PHPMYADMIN with username/password.

Answer 9

If you are using the official mysql docker container, there is a simple solution:
Add the following line to your docker-compose service:
command: --default-authentication-plugin=mysql_native_password
Example configuration:
mysql:
image: mysql:8
networks:
- net_internal
volumes:
- mysql_data:/var/lib/mysql
environment:
- MYSQL_ROOT_PASSWORD=root
- MYSQL_DATABASE=db
command: --default-authentication-plugin=mysql_native_password

Answer 10

I solved this issue by doing following:
Enter to system preferences -> mysql
Select "Initialize database" and enter a new root password selecting "Use Legacy Password Encryption".
Login into phpmyadmin with the new password.

Answer 11

I had this problem, did not find any ini file in Windows, but the solution that worked for me was very simple.
1. Open the mysql installer.
2. Reconfigure mysql server, it is the first link.
3. Go to authentication method.
4. Choose 'Legacy authentication'.
5. Give your password(next field).
6. Apply changes.
That's it, hope my solution works fine for you as well!

Answer 12

As #kgr mentioned, MySQL 8.0.11 made some changes to the authentication method.
I've opened a phpMyAdmin bug report about this: https://github.com/phpmyadmin/phpmyadmin/issues/14220.
MySQL 8.0.4-rc was working fine for me, and I kind of think it's ridiculous for MySQL to make such a change in a patch level release.

Answer 13

Create another user with mysql_native_password option:
In terminal:
mysql> CREATE USER 'su'#'localhost' IDENTIFIED WITH mysql_native_password BY '123';
mysql> GRANT ALL PRIVILEGES ON * . * TO 'su'#'localhost';
mysql> FLUSH PRIVILEGES;

Answer 14

As many pointed out in other answers, changing the default authentication plugin of MySQL to native does the trick.
Still, since I can't use the new caching_sha2_password plugin, I'll wait until compatibility is developed to close the topic.

Answer 15

I solved this with MySQL 8.0.12 by running:
mysql_upgrade -u root

Answer 16

in my case, to fix it I preferred to create a new user to use with PhpMyAdmin because modifying the root user has caused native login problems with other applications such as MySQL WorkBench.
This is what I did:
Log in to MySQL console with root user: mysql -u root -p, enter your password.
Let’s create a new user within the MySQL shell:
CREATE USER 'newMySqlUsername'#'localhost' IDENTIFIED WITH mysql_native_password BY 'mysqlNewUsernamePassword';
At this point the newMysqlUsername has no permissions to do anything with the databases. So is needed to provide the user with access to the information they will need.
GRANT ALL PRIVILEGES ON * . * TO ' newMySqlUsername'#'localhost';
Once you have finalized the permissions that you want to set up for your new users, always be sure to reload all the privileges.
FLUSH PRIVILEGES;
Log out by typing quit or \q, and your changes will now be in effect, we can log in into PhpMyAdmin with the new user and it will have access to the databases.
Also you can log back in with this command in terminal:
mysql -u newMySqlUsername -p

Answer 17

I used ALTER USER root#localhost IDENTIFIED WITH mysql_native_password BY 'PASSWORD'; it worked

Answer 18

You can change the Authentication if u are running on Windows by reconfiguring the installation by running the msi. It will ask for changing the default authentication to legacy, then u can proceed with that option to change the authentication to the legacy one.