TechieRoop - Solution for DevOps & Open Source Technology

HDFS Cheat Sheet

Roopendra August 31, 2021 Comments Off2021-09-18T13:20:42+00:00

List of commands which I use day to day basis to perform my task in HDFS. Checkout below hdfs cheat sheet for reference. In below list I have covered Copy,…

Jenkins Questions and Answers

Roopendra August 22, 2021 Comments Off2021-09-18T13:51:56+00:00

Jenkins Questions and Answers Here are the list of Jenkins Questions. What is the Jenkins ? How you will use Jenkins to automate CI/CD ?How to configure your Github or…

Types of Jobs in Jenkins

Roopendra August 22, 2021 Comments Off2021-09-18T14:03:03+00:00

Types of Jobs in Jenkins We can create below types of jobs in Jenkins. Freestyle Project PipelineMulticonfiguration ProjectsFolder GitHub organization Mutlibranch Pipeline

Find the largest and smallest number in python using for loop

RoopendraSeptember 11, 20212021-09-18T08:13:54+00:00

Write a python program to find the largest and smallest number in python using for loop Assign first element of an array to largest(lt) and smallest (st) value the array…

Find two numbers whose sum is equal to a given number in sorted array

Roopendra September 11, 2021 Comments Off2021-09-18T13:22:48+00:00

Find two numbers whose sum is equal to a given number in sorted array In order to find the sum of the two array elements you need to traverse in array and check the sum of each element. Let's take an example of below sorted array in which we have…

Bubble sort program in python

Roopendra September 10, 2021 Comments Off2023-04-30T03:49:48+00:00

Write a Program in Python to execute Bubble sort program What is Bubble Sort Program ? Bubble sort is a simple sorting algorithm that compares adjacent elements and swaps them…

Program to print Fibonacci series in python

Roopendra September 10, 2021 Comments Off2021-09-18T08:20:13+00:00

The Fibonacci numbers, commonly refers as Fibonacci sequence, in which each number is the sum of the two preceding numbers, starting from 0 and 1. The Fibonacci Sequence is the…

Ansible

How to automate bash profile deployment in ansible ?

RoopendraSeptember 19, 20212022-04-23T13:48:14+00:00

If you dealing with number of servers in day to day basis and if your application is growing rapidly then you may come across with different environment variable which you…

How to create empty file in ansible playbook

Roopendra January 21, 2016 1 Comment2023-04-30T04:43:11+00:00

Create empty file in ansible Ansible Task to Create new file on remote machine, Validate and Copy Content on Remote Machine In this article I have covered create a new file…

Ansible Playbook validations

Roopendra July 5, 2014 1 Comment2021-09-11T20:38:07+00:00

Ansible Playbook validations : While writing ansible playbook sometime we need to validate extra vars parameter or tasks. So that we can run ansible playbook without any fatal error or…

What’s new in ansible 1.6

Roopendra May 6, 2014 Comments Off2021-09-18T18:16:53+00:00

Below are the list of new changes , Modules in Ansible Major features/changes in Ansible : The deprecated legacy variable templating system has been finally removed. Use {{ foo }}…

Linux

How to get process ID of background process?

RoopendraOctober 30, 20202021-09-18T14:37:46+00:00

I usually prefer to execute process in background so that we don't need to worry if terminal got killed due to timeout or accidently. However, what if you want to…

How to check certificate validity in Linux?

Roopendra January 11, 2020 2 Comments2021-09-11T20:25:48+00:00

This article help you to check certificate expiry date from Linux command line using openssl utility. Check SSL certificate expiration date Syntax: openssl x509 -enddate -noout -in <certificate name> openssl…

Could not resolve host: mirrorlist.centos.org Centos 7

Roopendra December 28, 2019 Comments Off2021-09-11T20:17:37+00:00

I have installed Centos 7 in Vmware WorkStation. I tried to install few new packages using yum install. However, I was getting error "Could not resolve host: Centos 7" [root@localhost…

How to Split String with a Delimiter in Shell Script

Roopendra August 11, 2019 Comments Off2021-09-11T20:22:54+00:00

Split String with a Delimiter in Shell Script You can use Internal Field Separator (IFS) variable in shell script to split string into array. When we set IFS variable then…

Jenkins

Jenkins Questions and Answers

RoopendraAugust 22, 20212021-09-18T13:51:56+00:00

Jenkins Questions and Answers Here are the list of Jenkins Questions. What is the Jenkins ? How you will use Jenkins to automate CI/CD ?How to configure your Github or…

Types of Jobs in Jenkins

Roopendra August 22, 2021 Comments Off2021-09-18T14:03:03+00:00

Types of Jobs in Jenkins We can create below types of jobs in Jenkins. Freestyle Project PipelineMulticonfiguration ProjectsFolder GitHub organization Mutlibranch Pipeline

How to install Jenkins on Windows 10?

Roopendra August 22, 2021 Comments Off2021-09-18T14:14:15+00:00

What is Jenkins? Jenkins is one of the most popular Continuous Integration (CI) and Continuous Delivery (CD) tool. Jenkins is Open Source written in Java. Jenkins can be used in…

Popular Use Cases of Jenkins

Roopendra August 22, 2021 Comments Off2021-09-18T18:52:54+00:00

Jenkins is one of the most popular Continuous Integration (CI) and Continuous Delivery (CD) tool. Jenkins is an Open Source build written in Java. Jenkins can be used in automation…

Elasticsearch

Install Elasticsearch on Centos 7

RoopendraAugust 24, 20212021-09-18T13:29:58+00:00

Steps to Install Elasticsearch on centos 7 Prerequisites: Install OpenJDK 8 version sudo yum install Validate the installation java -version If you are installing jdk manually from tar file then…

Install Elasticsearch 5.0 on RHEL / CentOS

Roopendra November 27, 2016 1 Comment2021-09-11T20:46:22+00:00

Install Elasticsearch on RHEL / CentOS This article will cover install Elasticsearch version on CentOS and RHEL distribution. Also guideline to change to Default Cluster and Index settings in Elasticsearch…

Install Elasticsearch 2.x on CentOS 6

Roopendra January 17, 2016 1 Comment2021-09-11T20:52:59+00:00

Install Elasticsearch on CentOS 6 This article will cover install Elasticsearch version on CentOS 6. Also guideline to change to Default Cluster and Index settings in Elasticsearch So Let's start…

How to change slow log settings in Elasticsearch

Roopendra October 25, 2015 Comments Off2023-04-30T05:11:50+00:00

What are the slow log settings in Elasticsearch? Elasticsearch provide facility to keep track of your slow queries while indexing and searching data. It helps us to identify the slow…