Basically, I have a local laptop and a remote machine. My database is on the Remote machine which I access through Remote Desktop Connection.I can ofcourse run R tasks on the remote machine itself. Now I wonder if I can connect the remote machine from my local R and run the tasks on the remote machine while I still call these things in my local machine... that is I don't need to open R or type/source R codes on the remote machine.Can also live with typing R codes to access the Remote Database.Also saving the files on my Local machine.
Is there any other method to download those database tables on my local machine???
Related
I am new to Node-Red and SQL Lite, I am trying to connect my Node-Red app running in IBM cloud to the sqlite running in my local pc, I tried to connect by giving the database location like "C:\sqlite\db\SmartBar_DB.db", but is not working.
If Node-RED is running in the IBM Cloud then it has absolutely no access to files on your local computer.
You will not be able to connect from the IBM Cloud application to anything on your local computer.
I would like to use RStudio for analysis of data on a MySQL instance. This is a AWS RDS MySql instance that is only accessible via a jump box / bastion host. I have the credentials necessary to connect to the jump box, and from the jump box to the RDS instance. What do I need to do be able to query this DB directly from within the RStudio console?
I can connect (using the Terminal tab in RStudio)to the jump box using:
ssh -p 22xx user#ip.add.re.ss
Then I can connect to RDS mysql using:
mysql -u username -p database -h hostname.us-east-1.rds.amazonaws.com
I can connect and do manual mysql commands from within RStudio terminal, but I don't seem to be able to do anything with the DB from the RStudio console.
Sorry for opening a 2yo thread, but for everyone dealing with this issue as I am - I found this thread and it looks like it works (connecting with MySQL via ssh from R Studio).
You should use something which is called port forwarding. Some details
are here
(https://help.ubuntu.com/community/SSH/OpenSSH/PortForwarding) For
example, say you wanted to connect from your laptop to
http://www.ubuntuforums.org using an SSH tunnel. You would use source
port number 8080 (the alternate http port), destination port 80 (the
http port), and destination server www.ubuntuforums.org. :
ssh -L 8080:www.ubuntuforums.org:80 Where should be
replaced by the name of your laptop.
This is done for whole computer so you dont need to do this from r
studio.
Offcourse you need to forward your port to 3036. But you need special
privilige on the server. Because on most hosting you can only connect
from localhost (for example from PHP)
Source: https://www.py4u.net/discuss/881859
I'm trying to debug an issue with a Service Fabric node, and I want to RDP into the node in order to read internal log data.
However, I'm deploying to a local cluster, and I access my development machine via RDP. If I try to RDP into localhost from my development machine I of course see you already have a console session in progress, I'm already connected to this machine...
How can I remote desktop into a locally-running service fabric node when RDP is running on the host machine?
I have one server installed locally and other is company,s live server. I have an application installed on local machine, so whenever I run my application data on both SQL Server instances (local and live) should sync to keep same database on both servers how this can be done live database in cloud server with public ip and local databases are in my local system. I would be happy if anyone could provide sample format for this using asp.net C#
Why don't you use SQL Server Replication.
I created a java desktop application with derby client driver using netbeans 8.1.
I used this code to get connected to the database.
Class.forName("org.apache.derby.jdbc.ClientDriver");
Connection conn = DriverManager.getConnection("jdbc:derby://localhost:1527/LibertySchool;create=true;user=liberty;password=liberty");
conn.setSchema("LIBERTY");
Statement s = conn.createStatement();
s.executeQuery("SELECT * FROM USUARIOS");
ResultSet rs = s.getResultSet();
if (rs.next()) {
Login entrar = new Login();
entrar.setVisible(true);
}
The standalone application is working normal on the pc that it was created on after build the dist file has the app.jar file and everything works normal.
I created this so few client computers can access the same application to update data. I have started the derby network on client machine, I have also change the connection from localhost to use the app database location ip server.
But my app does not work on clients on the same network only on the computer where it was built. Other applications that do not use databases works well over the network, it seems that derby database folder has to be moved also to the client machine.
I need to know how to set the client machine properly so users can access the app with the database.
Can someone please give some hints.
If you want to make a client-server connection with the client on a different machine than the server, you'll have to do several things:
Change localhost to a valid externally visible address for the server machine. You can use an IP address, or a host name, e.g., 192.168.1.104:1527 or Carlos-Mac-Pro.att.net:1527, but you're going to need to figure out the right network address to use. localhost:1527 will only work when the client and server are on the same machine.
Ensure that your network allows connections between the client machines and the server machine. Nowadays, most machines will, by default, prevent most inbound network connections from other machines, as a security measure, so you'll need to configure the server machine's firewall, as well as any network devices that are being used in your local network between the client machines and the server machine, to allow TCP/IP connections on port 1527.
I don't think you want to move the derby database folder to the client machines. That would be a completely different architecture for your application (embedded vs client-server). Here's some good background material about the differences between the two configurations: https://db.apache.org/derby/docs/10.13/getstart/cgsquck70629.html