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<p>I have created a database in MySQL and want to connect to it using JS. Below is the code I wrote for this, but I'm getting an error. </p> <pre class="brush:php;toolbar:false;">const mysql = require('mysql'); var mysqlConnection = mysql.createConnection({ host: 'localhost', user:'root', password:'********', database:'EmployeeDB' }); mysqlConnection.connect((err) => { if (!err) console.log('DB Connection Succeded'); else console.log('DB Connection Failed \n Error :' JSON.stringify(err, undefined, 2)); });</pre> <p>I tried changing the name of the host and revoking and granting permissions (neither could be done). Drop and re-create the database and try connecting again. I'm supposed to connect to my database but it's causing an error that I can't understand. The error message is as follows: </p> <pre class="brush:php;toolbar:false;">DB Connection Failed 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 }</pre> <p>After changing the hostname:</p> <pre class="brush:php;toolbar:false;">DB Connection Failed Error :{ "code": "ER_HOST_NOT_PRIVILEGED", "errno": 1130, "sqlMessage": "Host 'Mistycyrus.bbrouter' is not allowed to connect to this MySQL server", "fatal": true }</pre></p>