Posts

Showing posts from April, 2021

Ansible CLI cheatsheet

-
Hey everyone, I would like to share some of the basic commands of ansible as I am practising ansible. Well, it is another helpful tool that describes how machines should be configured or what actions should be taken on them (systems).  What is ansible? Ansible is  Cross-platform configuration management tool An open-source software Application deployment tool An intra-service orchestration tool Basically, it is a radically simple IT automation engine. Introduction This cheat sheet-style guide provides a quick reference to CLI commands which are commonly used. Glossary Node :- A system where Ansible is installed and configured to connect to other systems. Inventory File :-  A file that contains information about the servers Ansible controls, typically located at /etc/ansible/hosts Playbook :- A YML file containing a series of tasks to be executed on a remote server. Role :- A collection of playbooks and other files that are relevant to a goal such as insta...
Post a Comment
Read more

Special Sum of array

-
Level EASY Given an array of length N, which contains single digit elements at every index. You need to find and return the sum of all elements of the array. But the final sum should also be single digit. In order to keep the output single digit - you need to keep adding the output number digits till single digit is left. Input Format : Line 1 : An Integer N i.e. size of array Line 2 : N integers which are elements of the array, separated by spaces Output Format : Single digit sum Constraints : 1 <= N <= 10^6 Sample Input 1 : 3 9 9 9 Sample Output 1 : 9 Sample Output Explanation : 9 + 9 + 9 = 27 2 + 7 = 9 Hence, ans is 9. Sample Input 2 : 5 1 7 8 5 9 Sample Output 1 : 3 Sample Output Explanation : 1 + 7 + 8 + 5 + 9 = 30 3 + 0 = 3 Hence, ans is 3
Post a Comment
Read more

Chef and Dice Problem Code: SDICE

-
Read problem statements in   Bengali ,   Mandarin Chinese ,   Russian , and   Vietnamese   as well. Chef has   N   6-sided standard dice . Each die has dimensions   1 × 1 × 1 . Since Chef is bored during the quarantine, he decides to stack dice for fun. First, Chef forms four vertical stacks of dice (not necessarily with the same height; empty stacks are allowed) on his table, which together make up a pile of dice with base area up to   2 × 2 . Among all such structures, the total visible surface area of Chef's structure must be the smallest possible.   Then, Chef calculates the number of   pips   on the visible faces of all dice in the structure. A face of a die is visible if it does not touch the table or another die. Now, he is wondering: among all possible arrangements of dice, what is the maximum possible total number of visible pips? Since he is busy cooking, he is asking you to solve this. Input The first line of the inp...
Post a Comment
Read more

Strong Language Problem Code: SSCRIPT

-
  Read problem statements in   Bengali ,   Mandarin Chinese ,   Russian , and   Vietnamese   as well. A string is said to be using   strong language   if it contains at least   K   consecutive characters '*'. You are given a string   S   with length   N . Determine whether it uses strong language or not. Input The first line of the input contains a single integer   T   denoting the number of test cases. The description of   T   test cases follows. The first line of each test case contains two space-separated integers   N   and   K . The second line contains a single string   S   with length   N .   Output Print a single line containing the string   "YES"   if the string contains strong language or   "NO"   if it does not (without quotes). You may print each character of each string in uppercase or lowercase (for example, the strings "yEs", "yes", "Y...
Post a Comment
Read more

Popular posts from this blog

MySQL Multi Source Master Slave Replication using GTID

-
Image
We are using GTID-based master-slave replication. In this replication, both master and slave should have the same GTID. This blog post aims to provide a step-by-step guide to help you set up MySQL Replication using GTIDs and help you replicate your MySQL data with ease. Prerequisite Master Source 1 Channel name:  DEVELOPMENT Database: mydb1 Enable Replication For Tables testing1 testing2 testing3 Mysql Server Running: 192.168.0.201:3307 Master Source 2 Channel name:  PRODUCTION Database: mydb1 Enable Replication For Tables testing4 testing5 testing6 Mysql Server Running: 192.168.0.201:3308 Slave Mysql Server Running: 192.168.0.209:3306 Configuration of  masters(192.168.0.201:3307/192.168.0.201:3308) and slave (192.168.0.209:3306) my.cnf config for master (192.168.0.201:3307) my.cnf config for master (192.168.0.201:3308) my.cnf config for slave (192.168.0.209:3306) Steps for taking a dump and restoring it Run the following commands in both masters 192.168.0.201:3307 and 1...
Read more

Access and modify all the resources of our Wiki.js using WikiJS API

-
Image
Hi everyone 😎 , Today we are going to see how to access or modify WikiJS resources using WikiJS API. WikiJS exposes GraphQL API to access and modify the stuff according to our requirements. So In this blog post, we going to see  How to set up WikiJS's local environment using docker. How to generate an API token in Wikijs. Using API tokens how to access WikiJS resources and how to modify them. First Local Setup using docker Here I am using docker to set up my local isolated WikiJS environment. Below is my docker-compose.yml file written by WikiJS contributors. To build the WikiJS environment we just need to run the following command  docker-compose up -df  [PATH_OF_DOCKER_COMPOSE_YML_FILE] To check the environment is in a running state run the following command docker ps Second Generate API token After setup our local environment we are ready to create our initial Administrator account in our WikiJS. 1. On the browser type localhost:80 2. Create an Administrator acco...
Read more

How to pass parameters in webhook?

-
Image
Hey everyone 😊, Today I want to share another interesting thing which I found in StackOverflow and that is how to pass parameters in webhook. Those who don't know about webhook I advise you to google about it before going further reading.  So for demonstration purpose, I am going to use Jenkins and Generic Webhook plugin . I created a job and called it testing  and select Generic Webhook  Trigger . Thereafter I add Request Parameter   and in the request parameter I added the name of the request which is name Thereafter I added a token to specify that this job can only be triggered. After this, I select Execute Shell from Build  and write the following code  After doing this add webhook URL in bitbucket repository or  GitHub repository with the parameter. The URL is look something like this  Webhook URL:- https://[YOUR_JENKINS_URL]/generic-webhook-trigger/invoke?token=trigger&name=Svastikkka  The configuration will something like this ...
Read more