I have a NodeJs application and MySQL database.
I have deployed nodejs application in google cloud and created MySQL database in google cloud and connected to nodejs application
i am able deploye the application successfully but application not able to connect to cloud mysql dayabase.
But when i am trying to connect cloud mysql from my local mysql workbench, it's successfully connecting to database. and i am able to connect cloud mysql database from local nodejs application
but i am not able to connect from deployed nodejs application to cloud mysql db
error Database is not connectedError: connect ETIMEDOUT
Db.js
var mysql = require('mysql');
var PropertiesReader = require('properties-reader');
var properties = PropertiesReader('./db.properties');
var connection = mysql.createConnection({
connectionLimit : properties.get('pool'),
host: properties.get('hostname'),
user: properties.get('username'),
password: properties.get('password'),
database: properties.get('dbname')
});
connection.connect(function (err) {
if (!err) {
console.log("Database is connected");
} else {
console.log("Database is not connected" + err);
}
}
);
module.exports = connection;
app.yaml
runtime: nodejs
env: flex
In your connection configuration for mysql,host does not work on App Engine. You have to use socketPath . socketPath is the path to a unix domain socket to connect to. Socket path must be something like this
var connection = mysql.createConnection({
socketPath : '/cloudsql/my-project-12345:us-central1:mydatabase',
user : 'username',
password : 'password',
database : 'db_name'
});
It's a similar process if you're using Postgres on GCloud which is answered here
Related
I am brand new to MySQL and AWS in general so excuse me if this is a silly question but here goes:
I am trying to create a connection between my nodejs application and my MYSQL database hosted on AWS. I have this so far
var mysql = require('mysql');
var connection = mysql.createConnection({
host: "AWS RDS Endpoint",
user: "username",
password: "password",
database: "DB Instance Name on AWS Console"
});
connection.connect(function(err) {
if (err) {
console.error('Database connection failed: ' + err.stack);
return;
}
console.log('Connected to database.');
});
connection.end();
When I try running the code I get back "Unknown database 'DB Instance Name on AWS Console'" with the database name being, obviously the db instance name that appears on the AWS console. The password and username I know are correct but I'm not sure about the host or database parameters. Can anyone give me some insight into, if I am doing this correctly?
Last attribute database, should be DB name attribute from configuration tab, which is default database we choose when creating RDS
OR you can remove database attribute completely if you are using an admin credentials.
var connection = mysql.createConnection({
host: "my-mysql-instance.acdefghij.us-east-1.rds.amazonaws.com",
user: "username",
password: "password"
});
I'm running my node app on a linux vps where I have installed apache2 and phpmyadmin. I have my mysql database on the server there which I can connect to user the mysql -uusername -ppassword command, but when running my node app with this code:
const mysql = require('mysql');
const connection = mysql.createConnection({
host : '127.0.0.1',
user : 'root',
password : '*******',
database : 'db_name',
});
connection.connect(function(e) {
if(e) {
console.log('Database didn\'t connect');
} else {
console.log('Database connected successfully');
}
});
It says "database didn't connect". the user, password and db fields are all correct for sure.
When console.log(e) I'm getting:
I'm getting:
error code: 'ER_NOT_SUPPORTED_AUTH_MODE'
errorno: 1251
sqlMessage: 'Client does not support authentication protocol requested by server; consider upgrading MySQL client'.
anybody knows why ?
You can change the connection to use the unix socket or check the mysqld is binding on 0.0.0.0 or on the ip of the ethernet card of the server it's running on.
According to the mysqld version you're using, the option can be "skip-networking" or "bind-address".
I am using the following code to establish connection to a MariaDB 10 server:
var mysql = require('mysql');
var con = mysql.createConnection({
host: "local_ip",
user: "username",
password: "my_password",
port: 3307,
database: "name_of_db",
});
con.connect(function(err) {
if (err) {
return console.error('error: ' + err.message);
}
The SQL-Server is running on a machine within a local network.
The SQL-User is granted connections from all hosts (%).
I am able to establish a connection with a SQL GUI tool, with exact the same user.
Seems to me like a bug inside the mysql node package, anybody encountered such a problem?
I would like to know the best way to connect an Express.js project to an external MySql database using conf.ini ?
Should I use SSH ?
There is no need for ssh, mysql has it's own protocol to connect remote servers, you only need to use mysql module for nodejs, the following code is to ensure connection between hosts:
const mysql = require('mysql');
var connection = mysql.createConnection({
host : 'remote_ip',
user : 'mysql_username',
password : 'password',
database : 'database_name'
});
connection.connect( function (err) {
if (err) {
console.log('Cannot connect to mysql server', err);
} else {
console.log('Successfully connected');
}
connection.end();
});
One last thing, make sure to edit mysql config file /etc/mysql/my.cnf and set bind-address parameter to 0.0.0.0, and do not forget to restart mysql service: sudo service mysql restart
I'd like to connect to a MySQL database using Sequelizer. Right now, I'm getting a Connection Refused Error.
To access the database, I have to SSH in. According to Mick Hansen here: https://github.com/sequelize/sequelize/issues/3753, one way to SSH in is to use tunnel-ssh to establish the tunnel, then initiate Sequelizer.
My (unsuccessful) approach so far has been to initiate the tunnel, then when the tunnel opens, test whether Sequelizer has authenticated.
Update
Host: DigitalOcean
CLI Success: I can 1) ssh into digitalocean server 2) login into mysql from the server and 3) access all database information as the root user.
Sequel Pro: I can also log into the database using Sequel Pro.
MySQL 127.0.0.1:3306: Based on the mysql/my.cnf file, the port is 3306 and the bind-address is 127.0.0.1. The config file also says instead of skip-networking, the default is to listen only on localhost, if that's relevant.
socketPath -> Error Connection Switching from TCP to socket seems to sometimes work for this type of problem, but when I tried it, I continued to get a connection refused error.
2 Error Types - "All Configured Authentication Methods Failed" and "Error Connection Refused"
Thanks for the help!
Code:
// sequelize config
var sequelize = new Sequelize('database', 'user', 'pass', {
host: '127.0.0.1',
dialect: 'mysql',
port: 3306,
pool: {
max: 10,
min: 0,
idle: 20000
}
});
// tunnel config
var config = {
user:'user',
host:'sshHost',
port:22,
dstHost:'127.0.0.1',
dstPort:3306,
srcHost:'127.0.0.1',
srcPort:3306,
localHost:'127.0.0.1',
localPort: 3306,
privateKey:require('fs').readFileSync('/path/to/key')
};
var tunnel = require('tunnel-ssh');
// initiate tunnel
tunnel(config, function (error, server) {
//....
if(error) {
console.error(error);
} else {
console.log('server:', server);
// test sequelize connection
sequelize
.authenticate()
.then(function(err) {
console.log('Connection established');
})
.catch(function(err) {
console.error('unable to establish connection', err);
})
}
})
When my config is set to the object above, I get an "All configuration methods failed error".
If I change my config to the below, I get a "Sequelize Error Connection Refused" error.
// tunnel config
var config = {
user:'user',
host:'sshHost',
port:22,
dstHost:'127.0.0.1',
dstPort:3306,
//srcHost:'127.0.0.1',
//srcPort:3306,
//localHost:'127.0.0.1',
//localPort: 3306,
privateKey:require('fs').readFileSync('/path/to/key')
};
localPort is the port listening on your local system. Currently you have it defined as 27000 but your Sequelize config is set to 3306.