I'm trying to connect to a MySQL database using the mySQl.jl package. it seems to work fine when I'm using the standard mySQL port 3306, but I don't see where to specify a database on a different port. How is that accomplished?
From the help doc of mysql_connect (get it with ?mysql_connect at the REPL):
mysql_connect(host::String, user::String, passwd::String,
db::String = ""; port::Int64 = MYSQL_DEFAULT_PORT,
socket::String = MYSQL_DEFAULT_SOCKET, opts = Dict())
Connect to a MySQL database.
So just add a named parameter port= after the database name parameter. For example:
mysql_connect("localhost", "john", "password", "my_db", port=1234)
Related
Okay.. I'm having a really strange issue and not able to figure out why it's happening. I have an AWS lambda function (Node.js) which connects to a MySQL database.
When DB parameters are hardcoded in Node.js, it works fine. Please see below.
const con = mysql.createConnection({
host : "myapp.something.us-west-2.rds.amazonaws.com",
user : "someuser",
password : "somepassword",
port : "3306",
database : "somedatabse"
});
const query = util.promisify(con.query).bind(con);
When I try to connect to the DB by reading these parameters from a config file or lambda environment variables, I get this error.
"ERROR Error: connect ECONNREFUSED 127.0.0.1:3306
at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1159:16)"
const con = mysql.createConnection({
host : dbHost,
user : dbUser,
password : dbPassword,
port : dbPort,
database : dbName
});
const query = util.promisify(con.query).bind(con);
// Retrieving DB parameters from my config file like this. Values are being retrieved successfully.
dbHost = dbConfig.dev_db_host;
dbUser = dbConfig.dev_db_user;
dbPassword = dbConfig.dev_db_password;
dbPort = dbConfig.dev_db_port;
dbName = dbConfig.dev_db_name;
// Able to log all these values correctly.
console.log(dbHost); // myapp.something.us-west-2.rds.amazonaws.com
console.log(dbUser);// someuser
console.log(dbPassword); // somepassword
console.log(dbPort); // 3306
console.log(dbName); // somedatabase
Note - I am able to retrieve the values successfully from config file. I verified by logging the info. Not sure why the DB connection is failing.
Also, I run into the exact same issue when I read the DB parameters from lambda environment variables.
Any help is appreciated. Thanks in advance!
I want to connect to AWS MySQL database instance. Here is my code:
val hikari = HikariConfig().run {
driverClassName = "com.mysql.jdbc.Driver"
jdbcUrl = "jdbc:mysql://${mainConfig.databaseHost}:${mainConfig.databasePort}" +
"?user=username&password=password"
username = Config.DATABASE_USER
password = Config.DATABASE_PASSWORD
isAutoCommit = false
transactionIsolation = "TRANSACTION_REPEATABLE_READ"
return HikariDataSource(this)
}
Database.connect(hikari(config))
And my mainConfig.databaseHost looks like: mydatabase.xyz.region.rds.amazonaws.com.
So, this connection is working but I can't to exec any SQL statements because:
java.sql.SQLException: No database selected
I've tried to specify database name in my jdbc url but it causes exception.
So how can I connect to specified AWS database?
After research I found that DB identifier and DB name are different, so I specified DB name in jdbc url and now it working!
I'm trying to connect to a MAMP MySQL database from Wakanda 11.
I tried connecting to the localhost database using Connect to Remote Datastore but I keep getting a Connection failed response. I've also tried using port 127.0.0.1:8081 which it connects to but not when attempting to use port:3306 which is where I have the MySQL database configured on the MAMP server. What am I doing wrong?
I've tried the following script...
model.addSQLCatalog("mysqldb", {
hostname: '127.0.0.1',
port: 3306,
user: 'root',
password: 'xxxxxxxx',
database: 'my_database_name',
ssl: false,
dbType: 'mysql'
});
...but this gives me the following error:
TypeError: JSON.stringify cannot serialize cyclic structures.
How can I fix and make it work on port:3306 so I can see my database structures?
If you are using Wakanda Enterprise Edition 11 or higher there is a MySQL Connector Pro.
Here is an example of connecting with this:
model.mergeSQLCatalog(localName, {
hostname: string 'host name',
port: number remote_port_number,
user: string 'userName',
password: string 'password',
database: string 'SQL database name',
jsFile: string 'configuration JavaScript file',
ssl: boolean true or false,
dbType: string 'mysql' } )
If you are on an older version of Wakanda Enterprise Edition but still using version 7 or higher then there is a Wakanda/MySQL connector.
Here is an example of connecting to MySQL with the connector:
var sql = require('waf-sql');
//use port 3306 and do not use SSL
var dbconn = sql.connect('mysql','192.168.0.21', 'john', 'x54?hsf5x!','arts',3306,false);
var rs = dbconn.update("people", {
name: "smith",
age: 42
}, {
id: 1
});
var rs = dbconn.select("*", "people", {
id: 1
});
var row = rs.getNextRow(); // get the first row
dbcon.close(); // close connection
Here is an example of the available parameters:
var params = {
hostname: [your host name or IP address],
user: [the user name of your DB],
password: [the user password],
database: [the DB name],
port: [the port number of the MySQL Server, by default 3306],
ssl: false,
dbType : 'mysql'
};
If I'm correct your issue has been solved? Does it work for both Windows & Mac ?
To resume , to use ProCOnnector you'll need :
The Enterprise Version of Wakanda
For the current v11 version of Wakanda, you need to use in the model.js file the addSQLCatalog() API.
The parameters accepted are described in the doc
Please note in the next version of Wakanda we 'll provide to wizzard to connect to other DBs instead of the addSQLCatalog(). This will help and ease the process.
Today I was trying to use sphinxsearch with SphinxQL but something going bad =\
First I installed sphinxsearch then I configured it, after that I created index forum_index using indexer --all. All finished without errors.
Then I included SphinxQl to my project, typed host and port which is listening sphinx and tried to make a query like in ReadMe of SphinxQL:
// create a SphinxQL Connection object to use with SphinxQL
$conn = new Connection();
$conn->setParams(array('host' => 'localhost', 'port' => 9306))
;
But it caused a database access error:
access denied www-data#localhost password NO
After that I set parameters of username and password in SphinxQL using
mysqli::real_connect()
Previous errors disappeared
Then I tried to make a test query:
$query = SphinxQL::create($conn)->select('column_one', 'colume_two')
->from('forum_index');
$result = $query->execute();
But I get an error:
table forum_index doesn't exists
I have a feel that my SphinxQL doesn't see sphinx or sphinx config and tries to make a simple query.
Have you any idea what's going wrong?
Please go to command line use the following command
mysql -P9306 --protocol=tcp --prompt='sphinxQL> '
Once get sphinxQL prompt enter the following command
sphinxQL> show tables;
If you set up everything correctly you can see the forum_index table in the list. Else check your searchd configuration section in your sphinx.conf file for proper configuration. My configuration look like this
searchd {
listen = 9315
listen = 9306:mysql41
log = /Users/XXXX/projects/sphinx/data/searchd.log
query_log = /Users/XXXX/projects/sphinx/data/query.log
read_timeout = 5
max_children = 30
pid_file = /Users/XXXX/projects/sphinx/data/searchd.pid
max_matches = 1000
seamless_rotate = 1
preopen_indexes = 0
unlink_old = 1
workers = threads
thread_stack = 1024K
}
I solved my problem by setting host = '127.0.0.1' in SphinxQL params
I'm trying to connect to a remote mysql server using a SSH tunnel set up using OpenSSH key file and SSH.Net library as shown in the code section below...
try
{
PrivateKeyFile pkfile = new PrivateKeyFile("C:\\Users\\OpenSSHKey", "mypassword");
var client = new SshClient("servername.com", 22, "myusername", pkfile);
client.Connect();
if (client.IsConnected)
{
var local = new ForwardedPortLocal(22, "localhost", 3306);
client.AddForwardedPort(local);
try
{
local.Start();
}
catch (SocketException se)
{
}
string connStr = "server=localhost;user=mysql_username;database=database_name;port=3306;password=MyDBPassword;";
MySqlConnection sql = new MySqlConnection(connStr);
sql.Ping();
try
{
sql.Open();
}
catch (MySqlException se)
{
}
}
}
catch(Exception e)
{
}
the tunnel is definitely set up because it throws the following error "Unable to connect to any of the specified MySQL hosts" on the sql.Open() call...
Im sure the database is on the server named mysername because I can connect to it using putty or workbench with the credentials used in the MYSQL connection string... I hope someone can help
I've just solved exactly this problem myself. Simply change your ForwardedPortLocal to:
var local = new ForwardedPortLocal("127.0.0.1", 3306, "127.0.0.1", 3306);
In your original, you were giving the source port as 22. However, your MySql connection would have been connecting to port 3306 on your local machine (which you would then tunnel across to port 3306 on the destination), so you need to ensure that the forwarded port is listening locally on 3306 to start with.
In addition, I've changed localhost to 127.0.0.1. A secondary issue I tripped over was that localhost on my machine was actually resolving to ::1, an IPv6 address, and the destination server didn't 'speak' IPv6. By switching this to the 127.0.0.1 (IPv4's version of localhost), it ensures that IPv4 is used by default.