NodeJS/mySQL - ER_ACCESS_DENIED_ERROR Access denied for user 'root'@'localhost' (using password: YES)

Question

I am attempting to connect to mySQL through a NodeJS file, but I receive the following error:

{ Error: ER_ACCESS_DENIED_ERROR: Access denied for user \'root\         


        

Answer 1

If you are connecting to an external server from localhost, you may need to add your gateway router address to MySQL's "Allowable Hosts" box.

This address can be found after the @ sign in the error message:

Access denied for user 'your_username'@'blah.blah.blah.yourisp.com'

Answer 2

Using recent MySQL version in package.json solved the problem.

I was using version 2.0.0. I changed the version to 2.10.2.

Answer 3

Most of the time this things happen due to the misconfigurations in mySQL on your device . I had this problem myself . I have solved the problem using the link below .

ERROR 1044 (42000): Access denied for user ''@'localhost' to database 'db'

Answer 4

I had a similar problem. I was running mysql in a Docker container and had the same error when trying to connect to it from my node app.

It appeared, that I had run the Docker container without exposing the port, hence it was 3306 inside the container, but would not have been accessible through localhost:3306. Why I got ER_ACCESS_DENIED_ERROR error was because I actually had some other mysql server running on the port 3306, with different username and password.

To see if or what you have running on the specific port type:

ps axu | grep 3306

Since I already had something on port 3306, to make the server accessible to my app I changed a port to 3307 and run my docker mysql container with the command:

docker run --name=<name> -e MYSQL_ROOT_PASSWORD=<password> -p 3307:3306 -d mysql

After starting mysql client inside Docker with command:

docker exec -it <name> mysql -u root -p

And after creating a database to connect to, I was able to connect to my mysql db from my node app with these lines:

 const connection = mysql.createConnection({
    host: 'localhost',
    user: 'root',
    password: 'password',
    database: 'database',
    port: 3307
 });

 connection.connect();

Hopefully helps someone new to docker and mysql :)

Answer 5

const pool = mysql.createPool({ host: 'localhost', user: 'root', database: 'database_name', password: 'your_pwd' });

make sure you have spelled the the keys and the properly. I was facing similar issue, then realised that I had written username instead of user

Answer 6

A bit late to talk about it but I guess I found the problem: special chars in password!!! I had a $ in pass. Solution: use escape Ex: te\$t