I have two servers, for the sake for my questions, lets name the first server A, and the second server B. Server A is a magento server that has a lot of user data, and server B is a basic web page.
I want to create an analytics dashboard in server B, that uses the SQL databases of server A.
Now the problem is having a remote connection from server B to server A.
I try to connect to server A, using this code in server B:
$servername = "104.2*****"; // Server A
$username = "root";
$password = "******";
$dbname = "magento";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
I get this error:
Connection failed: Can't connect to MySQL server on '104.2******'
Can someone please tell me what I'm doing wrong?
You may need to create a ssh tunnel to connect to a remote server hosted database if the settings on the database server do now allow unsecure connections which is likely why you're getting that error.
http://kb.mediatemple.net/questions/133/Tunnel+local+MySQL+server+through+SSH#gs
It might be that there is a firewall restriction on the server you want to connect to. The MySQL port connection might be restricted.
Try to connect from the server you run this script (or another server) to the ip/port of the server you want to connect to.
If you have access to a linux/windows console, try running:
telnet 104.2***** 3306
3306 is the default port for MySQL and telnet should work.
Related
How to make db connection my php scripts on server A and connect to the MySQL database on server B?
$conn = new mysqli($servername, $username, $password);
This should work just fine.
$conn = new mysqli(223.122.212.2:90, 'root', 'root');
where 223.122.212.2 is ip to server B, running mysql server and listening on port 90. Make sure that server B is running mysql on port 90 (or any other port you'd like) and firewall, if any, configured in a way that allows remote connection.
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully";
You need to do few steps:
On server B, Make enable remote access to database
On server A, db connection file make host => IP of server b
Ok so I created an ubuntu instance from AWS and downloaded LAMP on it as you would in a regular Ubuntu OS. When I try to connect to the db from my php script it's rejecting the connection. saying "Connection failed: Connection refused". So I guess my question is this: Does amazon not allow you to connect to a db without using their RDS database service or am I putting something wrong here? (I've hidden some of the data for security purposes, the ... are numbers of my instance). When I put "ec2-34-...-..-64.compute-1.amazonaws.com" into the browser the apache message comes up so I don't see why this is not working as a server name?
$servername = "ec2-34-...-..-64.compute-1.amazonaws.com";
$username = "root";
$password = “hidden";
$dbname = "questions87";
// Create connection
$conn = mysqli_connect($servername, $username, $password, $dbname);
// Check connection
if (!$conn) {
die("Connection failed: " . mysqli_connect_error());
}
You need to change your EC2 Security Group Inbound Rules related with 3306, you can find that on the AWS FAQ. Then, you need to be sure that your user#YOURIP have all permissions on your MySQL database. For your Inbound Rules it is recommended to use a Custom Rule to your IP, not All Traffic.
Reference and further reading:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/authorizing-access-to-an-instance.html
I am running mysql on a linux server. I have the linux server IP and mysql runs on localhost on that linux server. Now how do I access mysql running on localhost server remotely?
I can do this by ssh into linux server then running mysql, but how would I do it with in a php script? For example...
<?php
$servername = "localhost";
$username = "username";
$password = "password";
try {
$conn = new PDO("mysql:host=$servername;dbname=myDB", $username,
$password);
// set the PDO error mode to exception
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
echo "Connected successfully";
}
catch(PDOException $e)
{
echo "Connection failed: " . $e->getMessage();
}
?>
(this script only connects to mysql directly which is not possible remotely)
In my script I would need to access linux server then mysql server unless there is a way to access mysql directly (remotely). How is this achievable?
You need change bind address in my.cnf and restart your mysql service.
Official documentation:
https://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_bind_address
If the address is 0.0.0.0, the server accepts TCP/IP connections on all server host IPv4 interfaces.
By default all connections restricted localhost.
In order to access your mysql instance from your server; you need to install workbench (or some other mySql explorer) on your development machine.
Create a connection to mysql instance using server ip address as host name and provide username and password to open connection. If every thing goes well you will see your databases in explorer.
I have a MySQL server hosted in my Godaddy server. I want to access that database from my EC2 instance. However, I am unable to do so. I have added the public IP of my EC2 instance to the remote MySQL access hosts.
Things I have tried:
By using my Godaddy hosted website name as my server name.
Using my Godaddy hosted website IP address as my server name.
Every time I try to connect, It gives me the error:
Connection failed: Unknown MySQL server host '<hostname>:3306' (11)
Script I used:
<?php
$servername = "<hostname>:3306";
$username = "<username>";
$password = "<password>";
$dbname = "<dbname>";
$conn = new mysqli($servername, $username, $password, $dbname);
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully";
?>
PS: I can successfully connect my MySQL workbench and a locally hosted server to my Godaddy database.
Try removing :3306 from $servername
Make sure the arguments are correct. mysqli() needs port as separate argument as described here
According to godaddy you need to enable Allow Direct Database Access for remotely connections.
Link here!
I want to ask about how to connect my localhost application (C:xampp/htdocs/myproject) to database at my server host (www.someweb.somedomain)?
Am I possible to do that? If it is, how to connect it at my php config? Right now my config (server.php) is:
<?php
$host = "my web IP public:3306";
$user = "root";
$pass = "";
$db = "dispatcherDB";
$conn = mysql_connect($host, $user, $pass) or die ("Cant connect to mySQL");
mysql_select_db($db);
?>
what I got:
Warning: mysql_connect(): No connection could be made because the target machine actively refused it. in C:\xampp\htdocs\XMS\server.php on line 7
So, what must I filled for $host? I'm trying using website IP, it still can't connect. Maybe there's someone here have experience at this problem?
Sorry for my bad English
If you have cPanel access to the remote server then you need to mention that from which ip addresses it should allow access to MySQL..
In cPanel you will get Remote MySQL under heading Databases:
Clicking Remote MySQL will give you the option to add hosts from where you want to allow connections to your MySQL server:
Also, you can check localhost without specifying port number as value of $host..
Probably Mysql server is not allowed root access from remote servers.
you could check this post