How to Download Jenkins.war File from
If you are looking for a way to automate your software development and delivery process, you might have heard of Jenkins, an open source automation server that enables developers around the world to reliably build, test, and deploy their software. In this article, we will show you how to download and run Jenkins.war file, a Web application ARchive (WAR) file that can be installed on any operating system or platform that runs a version of Java supported by Jenkins.
What is Jenkins and why use it?
Jenkins is a powerful tool that helps you automate various stages of your software development lifecycle, such as building, testing, deploying, and monitoring. With Jenkins, you can integrate various tools and plugins to create a continuous integration (CI) and continuous delivery (CD) pipeline that ensures your code is always in a deployable state. Jenkins also provides a web interface that allows you to manage your projects, configure your jobs, monitor your builds, and access your logs and reports.
download jenkins.war file from https www.jenkins.io download
What is a WAR file and how to run it?
A WAR file is a compressed file that contains the files and resources of a web application, such as HTML, CSS, JavaScript, Java classes, images, etc. A WAR file can be deployed on a servlet container or an application server that supports the Java Servlet specification, such as Tomcat, Jetty, GlassFish, etc. A WAR file can also be run as a standalone application using the embedded Winstone servlet container that comes bundled with Jenkins. To run a WAR file, you need to have Java installed on your machine and use the command java -jar jenkins.war.
Downloading Jenkins.war File
The first step to use Jenkins is to download the Jenkins.war file from the official website There are two release lines available: Stable (LTS) and regular (Weekly). Depending on your organization's needs, one may be preferred over the other.
Choosing a release line: Stable or Weekly
The Stable (LTS) release line is based on the regular releases that are chosen every 12 weeks and receive bug and security fix backports every 4 weeks. The Stable releases are recommended for users who want more stability and less frequent updates. The regular (Weekly) release line delivers bug fixes and new features rapidly to users and plugin developers who need them. It is generally delivered on a weekly cadence. The Weekly releases are recommended for users who want more features and don't mind frequent updates.
Choosing a package: Generic Java or other options
The simplest way to download Jenkins is to choose the Generic Java package (.war) option under either the Stable or the Weekly release line. This will download the Jenkins.war file that can be run on any operating system or platform with a version of Java supported by Jenkins. Alternatively, you can choose other options that are specific to your operating system or platform, such as Docker, Kubernetes, Windows, Ubuntu/Debian, etc. These options may provide additional features or integrations that make it easier to install and run Jenkins on your environment.
Verifying the download
Before running the Jenkins.war file, you may want to verify its integrity and authenticity by checking its SHA-256 checksum or its signature. You can find the checksum and the signature files on the same page where you downloaded the Jenkins.war file. You can use tools like sha256sum or gpg to verify them. Learn more about verifying Jenkins downloads here . Running Jenkins.war File
Once you have downloaded and verified the Jenkins.war file, you can run it on your machine using the command line. You need to have Java installed and configured on your machine before running Jenkins. You can check if you have Java installed by running the command java -version. If you don't have Java installed, you can download it from here .
Setting up Java
Jenkins requires a version of Java that is compatible with its release line. For the Stable (LTS) release line, Jenkins requires Java 8 or 11. For the regular (Weekly) release line, Jenkins requires Java 8 or higher. You can check the compatibility table here . You also need to set up the JAVA_HOME environment variable to point to the location of your Java installation. You can follow the instructions here to set up JAVA_HOME on different operating systems.
Using the command line
To run Jenkins.war file using the command line, you need to open a terminal or a command prompt and navigate to the directory where you downloaded the Jenkins.war file. Then, you need to run the command java -jar jenkins.war. This will start Jenkins on the default port 8080 and the default configuration directory /.jenkins. You can access Jenkins by opening a browser and going to
Changing the port and the configuration directory
If you want to change the port or the configuration directory where Jenkins stores its data, you can use some command-line options when running Jenkins.war file. For example, to change the port to 9090, you can run java -jar jenkins.war --httpPort=9090. To change the configuration directory to /opt/jenkins, you can run java -jar jenkins.war --webroot=/opt/jenkins. You can find more command-line options here .
Post-installation Setup
After running Jenkins.war file for the first time, you need to complete some post-installation steps to unlock Jenkins and customize it with plugins and users.
Unlocking Jenkins with a password
When you access Jenkins for the first time, you will see a screen that asks you to enter an administrator password to unlock Jenkins. The password is randomly generated and stored in a file on your machine. You can find the location of the file on the screen. Copy and paste the password into the field and click Continue. Alternatively, you can use the Skip button to bypass this step, but this is not recommended for security reasons.
Customizing Jenkins with plugins
The next screen will ask you to choose which plugins you want to install on your Jenkins instance. Plugins are extensions that add functionality and integration to Jenkins. You can choose between two options: Install suggested plugins or Select plugins to install. The first option will install a set of plugins that are recommended for most users, such as Git, Pipeline, Folders, etc. The second option will allow you to choose which plugins you want to install from a list of available plugins. You can also install more plugins later from the Manage Jenkins > Manage Plugins page.
Creating the first administrator user
The final screen will ask you to create an administrator user for your Jenkins instance. You need to enter a username, a password, a full name, and an email address for your user. This user will have full access to Jenkins and can create other users and assign permissions. Click Save and Finish when done. You will see a confirmation message that says Jenkins is ready.
Conclusion
In this article, we have shown you how to download and run Jenkins.war file from We have also explained what is Jenkins and why use it, what is a WAR file and how to run it, how to choose a release line and a package for downloading Jenkins, how to verify the download, how to change the port and the configuration directory, and how to complete the post-installation setup. By following these steps, you should be able to start using Jenkins for your software development and delivery process.
Jenkins.war file is a convenient way to install and run Jenkins on any operating system or platform that supports Java. It allows you to run Jenkins as a standalone application without requiring any additional installation or configuration of a servlet container or an application server. It also gives you more flexibility and control over your Jenkins instance.
If you want to learn more about Jenkins and how to use it effectively, you can check out these resources:If you want to learn more about Jenkins and how to use it effectively, you can check out these resources:
: This part of the Jenkins User Documentation contains a series of introductory tutorials to help you begin building your applications in an automated fashion with Jenkins.
: This guided tour introduces you to the basics of using Jenkins and its main feature, Jenkins Pipeline.
: This tutorial provides a quick introduction to Jenkins and covers its installation, configuration, and usage.
: This page lists some books that are related to Jenkins and can help you deepen your knowledge and skills.
: This handbook contains the official documentation of Jenkins and covers its features, concepts, and best practices.
: This book is a comprehensive guide to Jenkins that covers its installation, configuration, administration, security, pipeline, plugins, and more.
: This is the online forum where you can meet other Jenkins users and share your experiences by organizing and attending events and meetups, contributing to the project, giving feedback, and asking questions.
FAQs
Here are some frequently asked questions about downloading and running Jenkins.war file:
What are the advantages of using Jenkins.war file over other installation methods?
Some of the advantages of using Jenkins.war file are:
It is platform-independent and can run on any operating system or platform that supports Java.
It does not require any additional installation or configuration of a servlet container or an application server.
It allows you to run Jenkins as a standalone application without affecting other applications on your machine.
It gives you more flexibility and control over your Jenkins instance.
How can I update my Jenkins.war file to the latest version?
To update your Jenkins.war file to the latest version, you need to download the new version from and replace the old file with the new one. You may also need to update your plugins and configuration files accordingly. You can find more information on how to upgrade Jenkins here .
How can I stop or restart my Jenkins.war file?
To stop or restart your Jenkins.war file, you need to use the command line. To stop Jenkins, you can press Ctrl+C in the terminal or command prompt where you ran the java -jar jenkins.war command. To restart Jenkins, you can run the same command again. You can also use some command-line options to control how Jenkins shuts down or restarts. You can find more information on how to stop or restart Jenkins here .
How can I access my Jenkins instance remotely?
To access your Jenkins instance remotely, you need to make sure that your machine is reachable from the network where you want to access it. You also need to know the IP address or hostname of your machine and the port where Jenkins is running. For example, if your machine has an IP address of 192.168.1.100 and Jenkins is running on port 8080, you can access it by going to from another machine on the same network. You may also need to configure your firewall or router settings to allow incoming connections to your machine and port.
How can I secure my Jenkins instance?
To secure your Jenkins instance, you need to follow some best practices such as:
Using HTTPS instead of HTTP for accessing Jenkins.
Enabling authentication and authorization for accessing Jenkins.
Using strong passwords and credentials for your users and agents.
Using encryption and certificates for your communication and data transfer.
Using plugins and tools that enhance security and prevent attacks.
You can find more information on how to secure Jenkins here .
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