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Jenkins :- Run a remote command on all Jenkins slaves via Master

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Hi everyone 😀, Today I want to share a solution related to run a common command in all slave nodes via the master node in Jenkins using the Jenkins pipeline. I also faced a similar issue before where I had to run docker related commands in all nodes. The approach is simple  First, we need to define an agent in our Jenkins pipeline. Second, we need to define two stages first one for the master (optional) and the second one are for slaves. Third, we need some built-in functions jenkins.model.Jenkins.instance.getNodes() :-  Returns all Node s in the system, excluding Jenkins instance itself which represents the built-in node slave.toComputer().isOnline() :-  To check slave node is online getDisplayName() :-  To get the name of the slave node thereafter we create a user-define function and in this,  we define two loops first one for getting all names of slave nodes and the second one is to define a node-block that is capable of executing commands in the slave nodes. The function will loo
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How to pass parameters in webhook?

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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 After saving my webhook configuration I
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Access and modify all the resources of our Wiki.js using WikiJS API

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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 account  Email: loc
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Fahrenheit to Celsius

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Level EASY Given three values - Start Fahrenheit Value (S), End Fahrenheit value (E) and Step Size (W), you need to convert all Fahrenheit values from Start to End at the gap of W, into their corresponding Celsius values and print the table. Input Format : 3 integers - S, E and W respectively Output Format : Fahrenheit to Celsius conversion table. One line for every Fahrenheit and corresponding Celsius value. On Fahrenheit value and its corresponding Celsius value should be separate by tab ("\t") Constraints : 0 <= S <= 80 S <= E <= 900 0 <= W <= 40 Sample Input 1: 0 100 20 Sample Output 1: 0 -17 20 -6 40 4 60 15 80 26 100 37 Sample Input 2: 20 119 13 Sample Output 2: 20 -6 33 0 46 7 59 15 72 22 85 29 98 36 111 43 Explanation For Input 2: We need need to start calculating the Celsius values for each of the Fahrenheit Value which starts from 20. So starting from 20 which is the given Fahrenheit start
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