Open ports in Ubuntu’s firewall using IP Tables
On the terminal, do the following to open port 80 sudo iptables -A INPUT -p tcp --dport 80 -j ACCEPT sudo iptables -F Persisting the rule changes across boot cy...
Author: Sreekumar Kj
Sreekumar (KJ) has been a hobby programmer from school days. Codemarvels is his personal blog from the year 2010, where he writes about technology, philosophy, society and a bit about physics.
He now runs a conversational AI company - DheeYantra - focusing his efforts to help businesses improve operational efficiency using digital employees powered by AI.
Make a new disk available in Ubuntu on AWS or Azure
To make a new disk you just added to the Ubuntu device, please go through the following steps – Check whats the /dev path of the disk. On terminal, run- You wou...
host-name getting reset after a reboot
Problem: The newly set hostname reverts back to older one after reboot Reason : Hostname is reset by cloud-init Solution : Inactivate cloud-init. On t...
Ubuntu : retain host-name change after a reboot
Problem: The newly set hostname reverts back to older one after reboot Reason : Hostname is reset by cloud-init Solution : Inactivate cloud-init. On terminal, k...
Machine Learning – the basics
Hey there ! So you are a programmer, wanting to master machine learning ? You are at the right place. Lets get started. So, what exactly is machine learning ? W...
Fixing Cqlsh Import Error
Problem: Running Cqlsh exits with the error : from cqlshlib import cql3handling, cqlhandling, pylexotron,sslhandling, copy ImportError: No module named cqlshlib...
Planning conversational Automation – Here’s what you should look for !Machine Learning – the basics
dhee । தீ । ধী । ధీ । धी । ಧೀ । ധീ । ઘી । ଢ଼ୀ Are you planning to bring in conversational automation using AI to make your processes more cost effective and con...
Planning conversational Automation – Here’s what you should look for !
dhee । தீ । ধী । ధీ । धी । ಧೀ । ധീ । ઘી । ଢ଼ୀ Are you planning to bring in conversational automation using AI to make your processes more cost effective and con...
Fix for – W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial/InRelease Temporary failure resolving ‘archive.ubuntu.com’
Problem: apt-get update gives an error : [bash] W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial/InRelease Temporary failure resolving ‘archive....
View logs and debug a docker service
To debug why a container within a docker stack didn’t start, these commands will help [bash] #list all processes docker service ls #note the id of your problema...