A Kubernetes Service can have a targetPort and port in the service definition: kind: Service apiVersion: v1 metadata: name: my-service spec: selector: app: MyApp ports: – protocol: TCP port: 80 targetPort: 9376 What is the difference between the port and targetPort? 11 Answers 11
I have 2 Google Compute Engine instances and I want to open port 9090 in both the instances. I think we need to add some firewall rules. Can you tell me how can I do that? 9 Answers 9
This is my first time working with Node.js and I ran into this problem: I have started a Node server through the plugin of an IDE. Unfortunately, I cannot use the IDE’s terminal. So I tried to run the script from the command line. This is the problem – I am using the Express module … Read more
These ports 465 and 587 are both used for sending mail (submitting mail) but what is the real difference between them? 6 Answers 6
I opened port #5955 from a java class to comunicate from a client. How do i close this port after I am done? and also which command can show me if port open or closed? 14 Answers 14
I have been working with a node.js project for a few weeks and it has been working great. Usually, I use npm start to run my app and view it in a browser on localhost, port 3000. Today, I started to get the following error while using npm start: Server started on port 3000 Port … Read more
I’m running a web service on my local machine that runs at localhost:54722. I want to call the service from an app running in the Android emulator. I read that using 10.0.2.2 in the app would access localhost, but it doesn’t seem to work with the port number as well. It says HttpResponseException: Bad Request. … Read more
Assuming infinite performance from hardware, can a Linux box support >65536 open TCP connections? I understand that the number of ephemeral ports (<65536) limits the number of connections from one local IP to one port on one remote IP. The tuple (local ip, local port, remote ip, remote port) is what uniquely defines a TCP … Read more
I have a Flask server running through port 5000, and it’s fine. I can access it at http://example.com:5000 But is it possible to simply access it at http://example.com? I’m assuming that means I have to change the port from 5000 to 80. But when I try that on Flask, I get this error message when … Read more
Is there a way to examine the status of a specific port from the Windows command line? I know I can use netstat to examine all ports but netstat is slow and looking at a specific port probably isn’t. 15 Answers 15
