Since its inception, Jenkins has evolved dramatically as a unifying Java tool for building. It has grown considerably and developed into an advanced automation system and Project Orchestration tool. Jenkins is open-source software. As a consequence, it has grown substantially and can now communicate and integrate with various platforms and technologies. This is why Jenkins has seen rapid growth and has been adopted by many companies, such as Facebook, Google, Netflix, Sky, and others.
In this article, we will explore the most effective methods for connecting Jenkins with the latest technology. We will review some of the most recent tools and techniques available and look at how to integrate Jenkins with other tools.
What is Jenkins and How to Integrate Different Tools with Jenkins?
Jenkins is among the well-known open-source continuous integration tools that numerous developers and testers praise (and it’s still expanding). It’s a client-side tool developed using Java that requires web servers, such as Apache Tomcat. Many companies use the well-known tool to analyze and report real-time isolated changes to the vast code repository. Through it, programmers can quickly identify issues and fix them in the codebase while automating testing the versions.
The tool has become so well-known due to its capacity to monitor and effectively manage the repetitious tasks (tasks) that occur during project development. Implementing this tool in the development process will help you streamline the build process and move more quickly through the development process. It assists in the development process beginning with building documents, testing, as well as other phases of the lifecycle. Let’s take a look at some of the integrations. Learn more below.
Jenkins and Continuous Integration
Jenkins was designed to help orchestrate and facilitate continuous integration. Relying on outdated testing techniques isn’t the best idea. Modern problems require new solutions. Even if you put in the effort, it is a waste of your time. To understand this better, let’s discover and comprehend the benefits and drawbacks of continuous Jenkins integration services.
Advantages of Jenkins:
- First of all, it was created by developers and for developers.
- Jenkins is one of the open tools and receives a lot of input from users to improve the quality of Jenkins more efficiently (this is done each month)
- Jenkins releases new stable versions.
- They are compatible with numerous powerful plugins, and the majority of them cannot live without the type (they expand with technological advancements and stay on trend).
You could also run Jenkins on cloud-based platforms since it is extremely compatible with cloud-based architectures.
Even the most powerful tools like Jenkins cannot escape the lure of pitfalls.
Disadvantages of Jenkins:
- The first thing we will notice about any software is the interface. It’s how simple and user-friendly it appears. The interface of the tool is not exactly modern (outdated).
- It takes work to manage the tools and requires a certain level of expertise to manage their various functions.
- Many find it difficult to set up the program (the beginning of the complexities starts here).
- Continuous integration usually stops when changes are made to the configuration.
- Despite the difficulties, Jenkins remains one of the most popular choices for developers.
Overall, Continuous testing greatly helps review the coverage of business risks for any company delivering high-quality services.
Jenkins Integration with Jira
- First, this integration is known for its simple, secure, cost-free, and reliable way of connecting to the Jenkins server (which runs behind a firewall and Jira Software Cloud or Jira Service Management Cloud).
- It’s a great option for adding clarity and context to the issues stored in Jira (providing the current status of the project or whether it was pushed into an organization).
Furthermore, using this information to search for problems using JQL (Jira query language) is also possible. This way, you can answer questions such as “Which problems are deployed in an environment?” from the appearance of a sprint). Additionally, you can apply these filters to your boards.
Jenkins Integration Slack
Slack is a messaging app that allows people to communicate effectively and connect all software tools to do their jobs to the best of their ability. It’s a secure channel-based chat application with an enterprise-grade environment. With its integration with Jenkins, you can now issue specific notifications to certain teams.
- To enhance the Continuous Integration pipeline more, you’ll require a tool that alerts you of any issues.
- The integration between Slack and Jenkins is the same and allows you to handle build problems quickly.
- Various organizations use this information-sharing method and offer chat rooms based on their projects, customers, and other requirements.
QA Touch Integration using Jenkins
QA Touch is a free, modern Test Management tool designed for intelligent testers and developers to aid their work with speedier, better, and higher-quality tests. This tool is now integrated with 16 of the most popular tools, one of which is Jenkins. This is why this integration is so important and why it is loved so greatly.
- Provides improved test automation.
- QA Touch can sync test automation results from Jenkins into QA Touch and update the status.
- Automatic updates on test results so you can feel that your testing is simple, fluid, and integrated.
Jenkins with GitHub
Jenkins is a top-rated and well-known provider of web hosting tools for development and version control via Git. It also manages source code and distributes version control. Let’s examine what makes this integration great using Jenkins.
- The first step is ensuring that Jenkins scans the entire GitHub and creates an automated job for each repository using Jenkins.
- The Jenkinsfile is a text-based file that describes the complete procedure for creating, testing, and deploying the project using Jenkins.
- After submitting a new pull request, Jenkins will perform the pipeline and report the status to GitHub, indicating whether it was unsuccessful or successful.
- It lets you automate testing and use a build that merges only the most efficient code. This allows teams to spot bugs before they occur and create more efficient software.
Jenkins Integration with Selenium
Another popular open-source program that testers are confident in. It’s a simple framework that is used for testing web-based applications development. It includes a playback feature that allows you to create functional tests without learning test scripting languages. Additionally, it facilitates automated websites and apps that run on various operating platforms and browsers. Let’s look at how to use the Selenium Integration with Jenkins.
- Being able to run Selenium tests in Jenkins allows you to run tests each time the application changes and then deploy it to the brand new location (after the test is passed).
- Through Selenium, you can schedule the tests you want to take whenever you’d like.
- Then, you can save the Test reports and the execution history.
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Jenkins Core Concepts and Features
Mastering certain concepts is crucial to understanding Jenkins. The following list will familiarize you with the process of building basic pipelines, which we will discuss in the subsequent sections.
Not all features are listed here—the complete list of the features.
Jenkins Pipeline
A Jenkins pipeline is an end-to-end workflow designed to work with CI/CD by employing various tools. It outlines the steps needed to create, test, and then deploy/deliver applications automatically in different environments.
Pipelines are defined with YAML files. In this context, within Jenkins, this file is called “Jenkinsfile.” Creating CI/CD pipelines helps standardize, enforce best practices, facilitate cooperation, and speed the introduction of new application features.
Builds in Jenkins
The term “build” within Jenkins is when the application’s source code is built, tested, and packed into a deployable artifact. A build can be activated manually or automatically, in which case Jenkins’ Jenkins automation server monitors for any changes to the repository for source code. The build consists of various subtasks like compiling the code, running unit tests, static analysis of the code, and document generation, among others.
Depending on the programming language in which the software is written, various plugins are available to aid in the build process within Jenkins. In addition, depending on the kind of deployment, different types of artifacts can be versioned or created and stored in specific places.
Jenkins Triggers
As the name implies, triggers are the actions or events that trigger the pipelines to build or deploy. Jenkins supports a variety of triggers. The following examples are available:
- SCM activates: Jenkins searches for new changes on the SCM repository. If the changes are discovered, Jenkins executes the pipeline jobs and processes the most recent source code.
- Triggers with parameterization: It permits the creation of builds to be triggered on inputs from the user.
- Manual triggers: trigger the pipeline to log into your Jenkins environment.
- Time-based triggers: Pipelines may be executed based on a set time frame. A cron job can be set to initiate the pipeline’s execution at the specified interval.
- Webhooks: If the pipeline executes based on an event happening on another platform outside of Jenkins, we could use webhooks to trigger the pipeline’s execution in Jenkins.
Jenkins Artifacts
Artifacts are files that result from a build process. They are necessary for implementation or reporting. Many runtime environments need different kinds of binaries and executables, which are often the result of the build and compile processes.
Jenkins allows artifact management, which lets users create or archive locally on the Jenkins server or on any other platform. This increases traceability, reproducibility, and security during software development.
Jenkins Agents
Agents are the infrastructure elements that Jenkins uses to run the pipeline tasks. Pipeline runs require computing power to execute the scripts and commands included in the execution steps. In addition to local execution, the build jobs can be executed from other on-prem computers, servers, or even in a containerized setting.
In reality, it is strongly recommended that the build jobs not be run on the server on which Jenkins is running. These are the VMs and resources that are known as Agents. Agents aid in expanding Jenkins operations beyond the scope of a single team to support the build and automation requirements at the level of a company or project.
Jenkins Pipeline Stages
Stages offer a clear arrangement for organizing and illustrating the flow of a pipeline within Jenkins. They allow developers to separate the complex Jenkins pipeline development into distinct phases that aid in identifying and fixing problems. A stage is a component within the flow.
For instance, we could include build, test deployment, and build stages. Each stage includes tasks that complete the task that a stage will complete. In general, the stages of Jenkins give a rational order to the pipelines.
Stages are displayed by way of “Stage view”:
Jenkins Jobs (Projects)
A job is a sequence of actions that are executed by the pipeline in a particular sequence. For instance, the build process consists of several jobs- push, build, test, etc. — that constitute the core of the Jenkins pipeline. Jobs can be configured to execute various applications and scripts. In Jenkins jobs, jobs can accept multiple input parameters, and you can also create elaborate workflows by using them.
Steps in Jenkins Pipelines
Steps are the smallest piece of work within Jenkins pipelines. Every command or line within the script is considered a step. Jenkins provides a range of plugins, built-in steps, and the capability to write custom steps using Groovy. Groovy language.
To put the stages, jobs, and steps in context, a Jenkins pipeline is comprised of many stages defined by stages. Each stage has many jobs, each of which is determined by a set of steps written in the scripting language.
Jenkins Plugins
An average Jenkins installation consists of the core platform. Plugins expand their capabilities with new features and integrations that can be used for diverse scenarios.
Jenkins plugins offer a broad array of functions throughout all phases of the pipeline and platform management. Third-party platforms can be integrated into Jenkins using plugins, which can also be custom-created. The plugins are reusable, thus increasing the developers’ efficiency and productivity.
Jenkinsfile
Jenkinsfile is a text file that explains the pipeline in code to Jenkins. It is a text file that describes the pipeline as code to the Jenkins server. Every project employing Jenkins for CI/CD will have this file in the root directory, generally transferred to the source code repository. It helps the Jenkins server comprehend the order of actions to be completed at each stage. This file allows you to create pipelines in a version-controlled, reproducible way, allowing teams to control their delivery process in conjunction with application code.
Here is an illustration of the Jenkinsfile for the continuous delivery pipeline, which has three phases:
pipeline {
agent of any
stages{
stage(‘Build’) {
steps{
echo ‘Building..’
}
}
stage(‘Test’) {
steps{
echo ‘Testing..’
}
}
stage(‘Deploy’) {
steps{
echo “Deploying ….’
}
}
}
}
Best Practices for Continuous Integration in Jenkins
Here’s a brief overview of the best practices you should use in using Jenkins development services:
Integrate the Groovy Code into Pipelines
Groovy is an extremely powerful and interactive scripting language that runs in conjunction with the Java Virtual Machine (JVM) and is well-suited to Jenkins CI pipelines. Integrating Groovy codes into Jenkins pipelines lets you make the most of its extensibility and flexibility, which allows the creation of complex building processes. The code serves as the glue of the pipeline, linking different actions instead of representing the primary function.
Avoid Repetitive Steps
Repeating the same process in multiple pipelines can increase maintenance work, which could lead to mistakes and inconsistencies. To avoid such issues, consider using shared libraries that allow users to consolidate common pipeline elements that can be reused across different projects. This helps ensure consistency and lowers the chance of errors caused by duplicate code.
Modify the pipeline process by introducing functional methods or functions that can be reused within the Groovy code. This promotes the DRY (Don’t repeat yourself) process for pipeline creation and helps keep a clean and organized codebase.
Avoid Concurrency
Problems with concurrency can occur when multiple tasks or builds are running simultaneously, leading to unpredictable behavior or even malfunctions. To reduce the chance of issues related to concurrency, you should consider using the lock feature offered in the Lockable Resources plugin to prevent simultaneous access to resources shared, like databases or files. This ensures that only a single build is able to connect to the resource once to avoid conflicts and corruption. Reduce the number of executors or set the pipeline to be run on particular nodes to control resource allocation and avoid overloaded infrastructure.
Avoid Overriding Built-In Steps
Jenkins CI provides numerous built-in steps to handle routine tasks like creating tests, deploying, and building code. Using custom-built implementations could result in problems, mistakes, and a greater effort to maintain. Be familiar with the steps and plugins built into Jenkins CI that are available for Jenkins CI, and use these whenever you can. This will ensure that you’re using well-tested, community-supported solutions for everyday tasks.
Conclusion
In the end, Jenkins remains a fundamental tool for continuous integration and continual delivery (CI/CD). Its vast plugin ecosystem reliability, dependability, and community-based support make it an excellent option for many organizations looking for automated solutions. But it’s crucial to consider its drawbacks, such as the single-server structure, the difficulty of managing plugins, and the requirement for customized scripting for deployment.
When implementing Jenkins, it is essential to examine your needs in relation to infrastructure. Although Jenkins has been the most popular option for a long time, more modern CI/CD systems that are container-based and in line with current DevOps methods have come into existence. Jenkins Development Company should take a careful look at the client’s needs and decide if Jenkins is the best choice or if a more modern alternative is better suited to them.
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