Best practices for using kubectl — Full mind map is at: “K8s Tools Mind Map” kubectl is the command-line interface (CLI) for managing applications in a K8s cluster. It allows you to deploy, inspect, and manage the state of your applications in a cluster environment. kubectl can be used to create, modify, and delete various K8s…

Linux jq command introduction — Note, full mind map is available at: “DevOps in Linux Mind Map” Let’s say one day you’ve received a task from your develoment team that they wanted to know the number of running EC2 instance, their ID and ip address, and they need it urgently. In this kind of scenario…

Python click library and why you should use it In my last article, I introduced Python argparse library: “argparse — Python Command Line Parsing Tool”. In this arcile I would like to introduce a new command line library called click. Both click and argparse are popular libraries for building command…

DevOps in K8s bootcamp series — Note, full “DevOps in K8s” mind map is available at: “DevOps in K8s Mind Map” What is Deployment In K8s, A Deployment provides declarative updates for Pods and ReplicaSets. It allows you to define the desired state of your application and automatically handle the details of creating, updating, and scaling the necessary resources. …

Use GPT-3 engine text-davinci-003 to create your own chatbot — In this article, I will show you how to build your own OpenAI bot in Telegram, using Telegram’s bot messaging platform and Python3. Why Build Your Own OpenAI Bot? Building your own OpenAI bot can offer the following benefits: Self-customization: By creating your own OpenAI bot, you have complete control over its features and behavior. This…

Introduction of kubecolor Full mind map is at: “K8s Tools Mind Map” If you also don’t like the output color of the kubectl command, you may want to use kubecolor . Without any color cutomizations, the kubectl command output looks like:

pstree command deep dive — Note, full mind map is available at: “DevOps in Linux Mind Map” What is pstree Command In Linux, the pstree command is a command-line utility that displays the process hierarchy of a Linux system as a tree. …

DevOps in K8s bootcamp series — Note, full “DevOps in K8s” mind map is available at: “DevOps in K8s Mind Map” What is ReplicaSet In K8s, a ReplicaSet is an object that helps to manage and maintain a set of identical pods. It ensures that a specified number of replicas of a pod are running at any given time…

What happens if you request more memory than server has? — First of all, can you answer this question? What happens when your application request more memory than a server’s physical memory (i.e request 6G or 8G on a 4G MEM server)? Well, the answer of this question is not just a simple “yes” or “no”. It depends on the context…