errno: 1251, sqlMessage: 'Client does not support authentication protocol requested by server; consider upgrading MySQL client

Question

I'm creating the simple api project in nodejs.

For that I have installed mySql workbench with version 8.0.11. I have created config file, dbConnection.js file and in the dbconnection.js file I have written the following code:

var mysql = require('mysql');
var path = require('path');
var config = require(path.resolve('./', 'config'))

var connection = mysql.createConnection({
    host: config.databaseHost,
    user: config.databaseUser,
    password: config.databasePassword,
    database: config.databaseDatabaseName,
    multipleStatements: true
});

connection.connect(function (err) {
    if (err) {
        console.log('Error connecting to Database',err);
        return;
    }
    console.log('Connection established');
});
module.exports = connection;

And I'm facing following error:

code: 'ER_NOT_SUPPORTED_AUTH_MODE', errno: 1251, sqlMessage: 'Client does not support authentication protocol requested by server; consider upgrading MySQL client', sqlState: '08004', fatal: true

Note: I kept my congif as simple as it can be, user = root, password = root, host = localhost.

Answer 1

once you establish your host, root, password &, etc inside your MySQL connection function.. paste the following inside of your database you are trying to connect within workbench with the following:

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'your_current_password';

Go back to the terminal and run node <file name.js> again

Answer 2

Open terminal and login:

mysql -u root -p

(then type your password)

After that:

USE mysql;

UPDATE user SET authentication_string=password(''), plugin='mysql_native_password' WHERE user='root';

And the last important thing is to reset mysql service:

sudo service mysql restart

Answer 3

You have to reconfigure MySQL Server. for that follow these steps.

1) Open mysql intsaller .

2) Click on Reconfigure (to the left mysql server)

3) Go to Authentication method tab (by clicking on Next twice.)

4) Then select the radio button Use Legacy Authentication Method . Click Next.

5) Enter your password. Click on Check. Go to Apply Configuration (by clicking on Next twice).

6) Click on Execute . Then Finish.

That's it. Enjoy Hacking!!

Answer 4

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'current password';

Answer 5

Was getting ERROR 1251 in node v17 with mysql

❌ // didn't worked: errno 1251 ER_NOT_SUPPORTED_AUTH_MODE

import mysql from 'mysql';

Try to remove mysql from node and replace it for mysql2

yarn remove 'mysql'

yarn add 'mysql2'

✅  import mysql2 from 'mysql2';

This fixed the issue for me!

Answer 6

Install mysql2 instead of mysql

npm install mysql2

Then add this to index.js

const mysql = require('mysql2')

Answer 7

I also had the same problem. It did not work for the root user. I created a new user (using mySQL workbench) and gave privileges to the new user. Then I tried with the new user and it worked fine. see workbench settings

Answer 8

Try to remove mysql

yarn remove mysql
yarn add mysql2
import mysql2 from "mysql2"

This fixed issue for me. code:

"ER_NOT_SUPPORTED_AUTH_MODE" errno: 1251 fatal: true sqlMessage: "Client does not support authentication protocol requested by server; consider upgrading MySQL client" sqlState: "08004"

Answer 9

Try this with your password and user name root if your password was not root try with your password. ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'root';