Software release life cycle
Stages of development
Pre-alpha
Pre-alpha refers to all activities performed during the software project before formal testing. These activities can include requirements analysis, software design, software development, and unit testing.
Alpha
The alpha phase of...
Kubernetes vs. Docker Swarm
Kubernetes and Docker are two of the major players in container orchestration. Both of these tools enable you to handle a cluster of servers that run one or more services on them....
Understand free -h
Lets explain these parameters:
total: Your total (physical) RAM (excluding a small bit that the kernel permanently reserves for itself at startup); that's why it shows 15 GiB , and not...
Use Nmap to Scan for Open Ports on Your Servers
Introduction
Nmap, short for Network Mapper, is a free, open-source tool for vulnerability scanning and network discovery. Network administrators use Nmap to identify what devices are running on their systems, discovering hosts...
Kafka – The important configuration
Article
This article points out certain high-level points that you should think about before deploying the Kafka cluster into production. It's divided into 3 parts: Tuning Kafka Producers, Tuning Kafka Consumers, and...
What Is a Cloud Architect?
The cloud architect is responsible for the entirety of cloud computing initiatives within an organization and for directing the architectural aspects of a cloud brokering team across all aspects of IT...
[Linux For Beginners] Linux Users and Permissions
This tutorial will provide you with an explanation of how Linux users organized, what permissions are, how they work, and how to manage them. A number of examples will be provided...
How to auto disconnect inactive users after a period of time in Linux
If there are many users who access to your system, it’s dangerous and resource-consuming when users keep their ssh connection for a long time. In this post, I would like to...
Some good subreddits on Reddit
Reddit is an American social news aggregation, web content rating, and discussion website. Registered members submit content to the site such as links, text posts, and images, which are then voted...
curl vs wget
What both commands do
both are command line tools that can download contents from FTP, HTTP and HTTPS
both can send HTTP POST requests
both support HTTP cookies
both are designed...
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APLICATIONS
To be a DevOps in Blockchain & cryptocurrency
In this topic, I would like to share my some keynotes to work as DevOps role in the Blockchain & cryptocurrency.
Node maintenance and upgrade
As...
