How to access information about current server/worker from within a flow

[kalimist]

Folks,
We want to be sure at any time that we are working in DEV or PROD environments.
We want to access some information about the server/worker we are running in.
we can access the IP of course but that’s not much use. Can we get the full server address or something similar?

 try {  
     InetAddress id = InetAddress.getLocalHost();  
     logWarn("the hostname is " + id.getHostName());  
   } catch (UnknownHostException e) {  
	logWarn("cannot get hostname");
   	
   }  
 

[takbb]

Hi @kalimist , does this give you what you need?

How to retrive KNIME server URL to be used in workflow

Hey Jon, could you please point me to the place/file where the HOSTNAME variable is set? I checked some setting files and couldn’t find the empty Hostename string. What would be the workaround? Thank you! Lars P.S. Our KNIME Server runs behind NGINX PPS. We found a Workaround using a Java snippet: [Hostname]

[kalimist]

Thanks but ut does not give much more than the basic hostname/ip. I will look for envars instead

[FrankColumbo]

Hello @kalimist

this may or may not help. The way I find out where I am at programmatically is by using a java snippet and extract context properties node in a component. Basics below:

String computername = System.getenv("computername");	
String c_Folder = v_contextworkflowpath;
		
if (computername.toUpperCase().contains("#ServerName"))
{
	if (c_Folder.startsWith("/Live/"))
	{
		out_workflow_environment = "Live";
	}
	else if (c_Folder.startsWith("/Test/"))
	{
		out_workflow_environment = "Test";
	}
}
else
{
       out_workflow_environment = "Dev";
}

Note on my server I have a folder structure that has live flows in a folder named Live and a folder for testing on a server called Test. My AP is used for dev’ing.

I use this component to make decisions about what to do. e.g. Live use x database table, Test use y database table, Dev use z database table. or log here, or anything really.

Frank