Akarsh Seggemu

8 hours ago

JavaScript: How to convert an integer into a binary number and count a number of bits in an integer?

Converting base-2 numeral system or binary system number into a integer is simplified using the inbuilt methods in JavaScript. There are different ways to solve the problem. My solution has a time complexity of O(logn) and has auxiliary Space of O(1). My solution has variable countBits which is declared as…

Binary Number Conversion

2 min read

JavaScript: How to convert an integer into a binary number and count a number of bits in an integer?

Binary Number Conversion

2 min read

5 days ago

CI: How to make username and password credentials in Jenkins pipeline job accessible for Docker in Docker Agent?

When using Jenkins CI you often need to make credentials available in the stage or steps or for entire pipeline job. Pipeline job are written in Jenkinsfile following Declarative Pipeline in Groovy syntax. Consider the following example Jenkinsfile from a Node.JS project, pipeline { agent {…

2 min read

CI: How to make username and password credentials in Jenkins pipeline job accessible for Docker in…

2 min read

6 days ago

Docker: How to remove a existing docker network if it exists using bash if-else statement?

Docker CLI tool commands makes it convenient to interact with dockerd daemon. I recommend referring to docker reference documentation when working with Docker CLI tools. If you need to create bash scripts or pipeline scripts where you need to remove any existing network which already exists and create the network…

Docker

1 min read

Docker

1 min read

Sep 25

CI: Configuring Jenkins to support Azure Active Directory (AD)

Azure Active Directory (AD) main feature is single sing-on. Adding support for Azure AD makes your CI system (Jenkins) more convenient to use. The users need not remember or create separate login credentials for CI system (Jenkins). In, this article I will be covering how to configure Jenkins to support…

Jenkins

2 min read

Jenkins

2 min read

Sep 23

CI: Docker compose to containerize Jenkins and Docker in Docker (dind) agent

To run multiple containers using Docker it is recommend to use Docker Compose tool to manage multiple containers. Jenkins supports installation using docker — https://www.jenkins.io/doc/book/installing/docker/ but the documentation shows how to run jenkins docker container and Docker in Docker (dind) ahent as a docker container. …

Docker Compose

2 min read

Docker Compose

2 min read

Sep 20

JavaScript: How to test Node.JS MonogDB database and Express.JS server using integration testing with mocha and chai?

To begin with you can create a Node.JS project using the command npm init -y Install the following developer dependencies in the Node.JS project npm i --save-dev express supertest @babel/core @babel/preset-env @babel/register regenerator-runtime chai mocha chai-exclude lodash nyc sinon mongodb Create a file and name it as .babelrc Below is…

JavaScript

4 min read

JavaScript

4 min read

Sep 19

CI: Configuring Jenkins to use Docker in Docker agent using configuration as code file

Docker in Docker (dind) agent can be setup following the Jenkins installation guide — https://www.jenkins.io/doc/book/installing/docker/#on-macos-and-linux. But the guide does not contain the configuration instructions on how to configure jenkins to use dind agent. Below is the configuration as code file — casc.yaml on using the dind agent URL. jenkins…

Jenkins

2 min read

Jenkins

2 min read

Sep 19

Kubernetes: Docker In Docker (dind) deployment in a container

Docker in docker (dind) image https://hub.docker.com/_/docker is essentially used to run docker inside a docker container. There is a official guide from Jenkins on how to setup dind. Docker Jenkins - an open source automation server which enables developers around the world to reliably build, test, and…www.jenkins.io The above guide shows installation in docker. But there is no guide on guide on how to install in Kubernetes deployment. …

Jenkins

2 min read

Kubernetes: Docker In Docker (dind) deployment in a container

Jenkins

2 min read

Sep 10

JavaScript: How do we identify if two strings are anagrams of each other by unit testing with mocha and chai?

Let's try to understand what is an anagram. By definition, If a single word or phrase can be rearranged by changing the position of its letters exactly one, then it is known as an anagram. For example, Listen is an anagram of the word silent. Below is an anagram of…

Unit Testing

3 min read

Unit Testing

3 min read

Aug 29

Why to say no to studying in Germany? – Less number of student hostels and student houses makes it less appealing to study in Germany

Note: This is my view after studying and living in Germany. I along with many aspiring students in 2012 have attended the presentation on why to study masters in Germany? by DAAD at Goethe Zentrum in Hyderabad. This was a very nice event it and helped me understand why?. …

Masters Degree

2 min read

Masters Degree

2 min read