Node.js can't authenticate to MySQL 8.0

Question

I have a Node.js program that connects to a local MySQL database with the root account (this is not a production setup). This is the code that creates the connection:

const mysql = require('mysql');

const dbConn = mysql.createConnection({
    host: 'localhost',
    port: 3306,
    user: 'root',
    password: 'myRootPassword',
    database: 'decldb'
});

dbConn.connect(err => {
    if (err) throw err;
    console.log('Connected!');
});

It worked with MySQL 5.7, but since installing MySQL 8.0 I get this error when starting the Node.js app:

> node .\api-server\main.js
[2018-05-16T13:53:53.153Z] Server launched on port 3000!
C:\Users\me\project\node_server\node_modules\mysql\lib\protocol\Parser.js:80
        throw err; // Rethrow non-MySQL errors
        ^

Error: ER_NOT_SUPPORTED_AUTH_MODE: Client does not support authentication protocol requested by server; consider upgrading MySQL client
    at Handshake.Sequence._packetToError (C:\Users\me\project\node_server\node_modules\mysql\lib\protocol\sequences\Sequence.js:52:14)
    at Handshake.ErrorPacket (C:\Users\me\project\node_server\node_modules\mysql\lib\protocol\sequences\Handshake.js:130:18)
    at Protocol._parsePacket (C:\Users\me\project\node_server\node_modules\mysql\lib\protocol\Protocol.js:279:23)
    at Parser.write (C:\Users\me\project\node_server\node_modules\mysql\lib\protocol\Parser.js:76:12)
    at Protocol.write (C:\Users\me\project\node_server\node_modules\mysql\lib\protocol\Protocol.js:39:16)
    at Socket.<anonymous> (C:\Users\me\project\node_server\node_modules\mysql\lib\Connection.js:103:28)
    at emitOne (events.js:116:13)
    at Socket.emit (events.js:211:7)
    at addChunk (_stream_readable.js:263:12)
    at readableAddChunk (_stream_readable.js:250:11)
    --------------------
    at Protocol._enqueue (C:\Users\me\project\node_server\node_modules\mysql\lib\protocol\Protocol.js:145:48)
    at Protocol.handshake (C:\Users\me\project\node_server\node_modules\mysql\lib\protocol\Protocol.js:52:23)
    at Connection.connect (C:\Users\me\project\node_server\node_modules\mysql\lib\Connection.js:130:18)
    at Object.<anonymous> (C:\Users\me\project\node_server\main.js:27:8)
    at Module._compile (module.js:652:30)
    at Object.Module._extensions..js (module.js:663:10)
    at Module.load (module.js:565:32)
    at tryModuleLoad (module.js:505:12)
    at Function.Module._load (module.js:497:3)
    at Function.Module.runMain (module.js:693:10)

It seems that the root account uses a new password hashing method:

> select User,Host,plugin from user where User="root";
+------+-----------+-----------------------+
| User | Host      | plugin                |
+------+-----------+-----------------------+
| root | localhost | caching_sha2_password |
+------+-----------+-----------------------+

...but I don't know why Node.js is unable to connect to it. I have updated all the npm packages and it's still an issue.

I would like to keep the new password hashing method. Can I still make this connection work? Do I have to wait for an update of the MySQL Node.js package, or change a setting on my side?

This affects PHP's PDO as well. Accepted answer fixes it too. — Nigel Atkinson, Nov 30 '18 at 01:45
You can look for more answers on this channel: https://stackoverflow.com/questions/50093144/mysql-8-0-client-does-not-support-authentication-protocol-requested-by-server/56752560#56752560 — Campalo, Jun 25 '19 at 11:03

score 61 · Accepted Answer · answered May 16 '18 at 18:40

61

MySQL 8.0 uses a new default authentication plugin - caching_sha2_password - whereas MySQL 5.7 used a different one - mysql_native_password. Currently, the community Node.js drivers for MySQL don't support compatible client-side authentication mechanisms for the new server plugin.

A possible workaround is to alter the type of user account to use the old authentication plugin:

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

Or create a different one that uses that same plugin:

CREATE USER 'foo'@'localhost' IDENTIFIED WITH mysql_native_password BY 'bar';

There's a pull request in pipeline to properly address the issue.

Another option is to use the official MySQL Node.js connector (full disclosure: I'm the lead dev), which is based on the X Protocol and already supports the new authentication mode.

answered May 16 '18 at 18:40

ruiquelhas

1,740
19
16

thanks for your answer, second way worked for me. I want know to know that why did the first way i.e ' alter user ' showed me error, "Operation ALTER USER failed for 'root'@'localhost' " – Pranjal Gupta Oct 02 '18 at 08:46
Maybe some client option is preventing you from overriding `root` permissions. I'm not entirely sure without better context. Maybe you can find the answer [here](https://dev.mysql.com/doc/refman/8.0/en/resetting-permissions.html). – ruiquelhas Oct 02 '18 at 10:04
1

Is there documentation for using the new connector with standard queries. I have been working thru this and I am not interested in document stores. I really just want to build a query and execute it like the standard libraries do. I am finding the session object to be very confusing. – sixstring Oct 18 '18 at 17:35
X DevAPI connectors focus mostly on CRUD and Document Store. SQL is, sort of, a 2nd-class citizen as of today and we believe the community Node.js drivers do a great job already and we want to support them as much as we can. There's still some stuff in the [user guide](https://dev.mysql.com/doc/x-devapi-userguide/en/using-sql.html) and the [Node.js](https://dev.mysql.com/doc/dev/connector-nodejs/8.0/tutorial-Working_with_Tables.html) [Connector](https://dev.mysql.com/doc/dev/connector-nodejs/8.0/Session.html) [docs](https://dev.mysql.com/doc/dev/connector-nodejs/8.0/module-SqlExecute.html). – ruiquelhas Oct 19 '18 at 09:22
Regarding your other point, the [`Session`](https://dev.mysql.com/doc/dev/connector-nodejs/8.0/Session.html) object is mostly an abstraction over a database connection, not yet bound to any schema, table or collection, which means it's the right place to run your queries without limitations using the `Session.sql()` [API](https://dev.mysql.com/doc/dev/connector-nodejs/8.0/module-SqlExecute.html). – ruiquelhas Oct 19 '18 at 09:23
Thank you, this worked for me but only after three hours of trying with a user other than root first! There must be another issue with my other user, but it returns the same error as this. Any suggestions? – Adam Davies Feb 02 '19 at 07:48
1

I just responded to the same question, with more details, in https://stackoverflow.com/a/56509065/2321594, evangelizing for X DevAPI! Great job providing it @ruiquelhas :) – Aidin Jun 08 '19 at 18:22

princebillyGK · Answer 2 · 2020-01-23T12:39:15.867

0

A workaround solution: create a new user with mysql_native_password protocol:

CREATE USER 'username'@'localhost' IDENTIFIED WITH mysql_native_password BY 'userpassword';

and then grant permissions on the database for the user:

 GRANT ALL PRIVILEGES ON userdb.* TO 'dgtong'@'localhost';

edited Jan 23 '20 at 12:39

answered Jan 23 '20 at 10:57

princebillyGK

1,931
20
16

Node.js can't authenticate to MySQL 8.0

2 Answers2

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