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Installation Guide to Jenkins

Jenkins is a Java-based open-source automation tool with plugins designed for ongoing integration. Jenkins is used to constantly develop and test software projects that help developers to incorporate project modifications and make it simpler for users to achieve a new build. The Jenkins allows developers to quickly locate and resolve flaws in a code base and to automatically test their structures. Jenkins can be changed and expanded readily on all operating platforms and various devices, whether OS X, Windows or Linux.  It immediately deploys code, produces test reports. During integration and continuous delivery, Jenkins can be configured according to the demands.System Requirements for Jenkins InstallationFollowing are the software and hardware requirements for installing Jenkins:Minimum hardware requirements:256 MB of RAM1 GB of drive space (although 10 GB is a recommended minimum if running Jenkins as a Docker container)Recommended hardware configuration for a small team:1 GB+ of RAM50 GB+ of drive spaceInstallation on WindowsYou must first install JDK. Jenkins promotes JDK8 only at this time. Jenkins can be installed when Java is running. The recent Jenkins package for Windows (presently version 2.191) can be downloaded. Click on the Jenkins exe file to unzip the file into a folder.To begin the installation click on "Next."To install Jenkins in another directory, click the "Change..." button. I'll hold the default choice in this instance and click on "Next."To begin the installation process, click on the "Install" button.The installation is being processed.When finished, you can finish the setup by clicking the "Finish" button.The URL http:/localhost:8080 will automatically be redirected to a Jenkins local page or the browser can be pasted.Copy and paste the password from the C:\Program Files (x85)\Jenkins\secrets\initialAdminPassword file for Jenkins unlocking. Click on the button "Continue."The suggested plugins or chosen plugins that you select can be installed. We will install the suggested plugins to maintain it easy.Wait for the complete installation of plugins.The next step is to build a Jenkins admin user. Click "Save and Continue." Please enter your information.To finish the Jenkins setup, click on "Save and Finish."To begin Jenkins, click on "Start using Jenkins."Below is the default page of Jenkins.Jenkins Installation on Linux/CentOS 7 systemMake sure that you are signed in as a user with sudo privileges before continuing this tutorial.The first step is to install Java, Jenkins being a Java application. To set up OpenJDK 8 package, execute the following command:$ sudo yum install java-1.8.0-openjdk-develJenkins does not currently support Java 10 (and Java 11). Make sure that Java 8 is the default Java version when multiple Java versions are installed on your computer.The next step is to allow the repository of Jenkins. To do so, use the following curl command to import the GPG key:$ curl --silent --location http://pkg.jenkins-ci.org/redhat-stable/jenkins.repo | sudo tee /etc/yum.repos.d/jenkins.repoAdd your system's repository with:$ sudo rpm --import https://jenkins-ci.org/redhat/jenkins-ci.org.keyUpon activation of the repository, install the recent stable Jenkins version by typing:$ sudo yum install jenkinsUpon completion of the installation, begin the Jenkins service with:$ sudo systemctl start jenkinsTo verify if it has been successful, check with below command:$ systemctl status jenkinsSomething like this you should see:Outputjenkins.service - LSB: Jenkins Automation ServerLoaded: loaded (/etc/rc.d/init.d/jenkins; bad; vendor preset: disabled)Active: active (running) since Thu 2018-09-20 14:58:21 UTC; 15s agoDocs: man:systemd-sysv-generator(8)Process: 2367 ExecStart=/etc/rc.d/init.d/jenkins start (code=exited, status=0/SUCCESS)CGroup: /system.slice/jenkins.serviceFinally, allow the Jenkins service to start on system boot $ sudo systemctl enable jenkinsOutputjenkins.service is not a native service, redirecting to /sbin/chkconfig.Executing /sbin/chkconfig jenkins onOpening Firewall portIf you install Jenkins on a remote CentOS firewall-protected server, port 8080 is necessary. To open   the required port, use the following instructions:$ sudo firewall-cmd --permanent --zone=public --add-port=8080/tcpsudo firewall-cmd --reloadSetting JenkinsOpen your browser and type in your domain or IP address followed by port 8080 in order to set your fresh Jenkins setup:http://your_ip_or_domain:8080Below screen will be displayed which prompts you to enter the admin password generated during setup:To print the password on your terminal, use the following instructions: $ sudo cat /var/lib/jenkins/secrets/initialAdminPasswordThe alphanumeric password should be 32 characters long, as shown below:Output 3226*****************************Copy your terminal password, paste it in the password field for the Administrator and click on Continue.On the next screen, you are asked if you would like to install or pick certain plugins. To begin the installation process instantly, just click on the Install suggested plug-ins box.When the installation is finished, the first administrative user is prompted for the setting. Fill in all the necessary data. and click the Save and Continue.On your next page, the URL for the Jenkins instance will be requested. An automatically produced URL will be added to the URL field.To finish the configuration, click the Save and Finish button to verify the setup.Finally,  click start using  Jenkins Button to start the process and the user we created in one of the past steps as admin user will log in Jenkins dashboard.You have effectively mounted Jenkins on your CentOS scheme when you have reached this point.Jenkins Installation on MacPrerequisiteA Mac machine with Mac OSX Yosemite or higher with admin accessInstallation of Java Development Kit on the machine.Access to Git, Svn, etc. remote repository.Download Jenkins installer.pkg file from Jenkins ' official website and get through the wizard setup.The jenkins setup wizard sets up a distinct Jenkins user on your system.We need to make some changes in the ‘Users & Groups’ section as well. Do follow below steps.Open ‘System Preferences -> Users & Groups’Click on the Lock icon located in the bottom left corner which reads, ‘Click the lock to make changes’. Enter your login password.Under the ‘Other Users’ section you may see the user without any name but with admin rights. This is our Jenkins user. Let's rename it.Right-click the empty user and select Advanced Options. This will show you all the details. Give the ‘Full name’ as Jenkins. Press OKClick on ‘Reset Password’. Enter a new password and make sure that you remember this.Now our Jenkins user is almost ready.This is just like another mac user with admin rights.Now restart your Mac machine and log in with Jenkins user with the password which you just reset.Click the lock to save the changes and restart the system to login with Jenkins user account.In localhost Jenkins resides at port 8080.Open your browser, go to localhost:8080 and make the original set-up, which consists of installing some plugins and creating account for safety purpose.Setting Jenkins as Launch agentJenkins operates by default as a daemon. A daemon is a non-interactive background that operates in the entire scheme and is not linked to a particular user.Much of CI runs simulators and other GUI apps, so another option is required. You can modify Jenkins as a launch agent to resolve this. On behalf of the user, a launch agent operates behind the scenes.You need to edit the settings folder and alter your place to begin rebooting automatically if you want to alter how the Jenkins process is started.Enter the below command to unload Jenkins as a Daemonsudolaunchctlunload/Library/LaunchDaemons/org.jenkins-ci.plistNext, migrate to the LaunchAgents folder the.plist file which defines how Jenkins will be running.sudo mv /Library/LaunchDaemons/org.jenkins-ci.plist /Library/LaunchAgents/Start the jenkins again and now it will run as launch agent.

Installation Guide to Jenkins

10K
  • by Ashish Kumar
  • 25th Sep, 2019
  • Last updated on 11th Mar, 2021
  • 10 mins read
Installation Guide to Jenkins

Jenkins is a Java-based open-source automation tool with plugins designed for ongoing integration. Jenkins is used to constantly develop and test software projects that help developers to incorporate project modifications and make it simpler for users to achieve a new build. The Jenkins allows developers to quickly locate and resolve flaws in a code base and to automatically test their structures. Jenkins can be changed and expanded readily on all operating platforms and various devices, whether OS X, Windows or Linux.  It immediately deploys code, produces test reports. During integration and continuous delivery, Jenkins can be configured according to the demands.

Jenkins can be configuration

System Requirements for Jenkins Installation

Following are the software and hardware requirements for installing Jenkins:

Minimum hardware requirements:

  • 256 MB of RAM
  • 1 GB of drive space (although 10 GB is a recommended minimum if running Jenkins as a Docker container)

Recommended hardware configuration for a small team:

  • 1 GB+ of RAM
  • 50 GB+ of drive space

Installation on Windows

You must first install JDK. Jenkins promotes JDK8 only at this time. Jenkins can be installed when Java is running. The recent Jenkins package for Windows (presently version 2.191) can be downloaded. Click on the Jenkins exe file to unzip the file into a folder.

Jenkins Installation on Windows

To begin the installation click on "Next."

Jenkins Installation on Windows

To install Jenkins in another directory, click the "Change..." button. I'll hold the default choice in this instance and click on "Next."

Jenkins in another directory

To begin the installation process, click on the "Install" button.

Jenkins Installation on Windows

The installation is being processed.

The installation in Jenkins

When finished, you can finish the setup by clicking the "Finish" button.

Completed the jenkins steps

The URL http:/localhost:8080 will automatically be redirected to a Jenkins local page or the browser can be pasted.

Unlock jenkins

Copy and paste the password from the C:\Program Files (x85)\Jenkins\secrets\initialAdminPassword file for Jenkins unlocking. Click on the button "Continue."

Unlock jenkins

The suggested plugins or chosen plugins that you select can be installed. We will install the suggested plugins to maintain it easy.

Customize Jenkins

Wait for the complete installation of plugins.

Started window of jenkins

The next step is to build a Jenkins admin user. Click "Save and Continue." Please enter your information.

Create first admin user in jenkins

To finish the Jenkins setup, click on "Save and Finish."

Instance configuration Jenkins

To begin Jenkins, click on "Start using Jenkins."

Jenkins Ready window

Below is the default page of Jenkins.

Welcome window of jenkins

Jenkins Installation on Linux/CentOS 7 system

Make sure that you are signed in as a user with sudo privileges before continuing this tutorial.

  • The first step is to install Java, Jenkins being a Java application. To set up OpenJDK 8 package, execute the following command:
$ sudo yum install java-1.8.0-openjdk-devel

Jenkins does not currently support Java 10 (and Java 11). Make sure that Java 8 is the default Java version when multiple Java versions are installed on your computer.

  • The next step is to allow the repository of Jenkins. To do so, use the following curl command to import the GPG key:
$ curl --silent --location http://pkg.jenkins-ci.org/redhat-stable/jenkins.repo | sudo tee /etc/yum.repos.d/jenkins.repo

Add your system's repository with:

$ sudo rpm --import https://jenkins-ci.org/redhat/jenkins-ci.org.key
  • Upon activation of the repository, install the recent stable Jenkins version by typing:
$ sudo yum install jenkins
  • Upon completion of the installation, begin the Jenkins service with:
$ sudo systemctl start jenkins
  • To verify if it has been successful, check with below command:
$ systemctl status jenkins
  • Something like this you should see:

Output

jenkins.service - LSB: Jenkins Automation Server

Loaded: loaded (/etc/rc.d/init.d/jenkins; bad; vendor preset: disabled)

Active: active (running) since Thu 2018-09-20 14:58:21 UTC; 15s ago

Docs: man:systemd-sysv-generator(8)

Process: 2367 ExecStart=/etc/rc.d/init.d/jenkins start (code=exited, status=0/SUCCESS)

CGroup: /system.slice/jenkins.service

  • Finally, allow the Jenkins service to start on system boot 
$ sudo systemctl enable jenkins

Output

jenkins.service is not a native service, redirecting to /sbin/chkconfig.

Executing /sbin/chkconfig jenkins on

Opening Firewall port

If you install Jenkins on a remote CentOS firewall-protected server, port 8080 is necessary. To open   the required port, use the following instructions:

$ sudo firewall-cmd --permanent --zone=public --add-port=8080/tcpsudo firewall-cmd --reload

Setting Jenkins

Open your browser and type in your domain or IP address followed by port 8080 in order to set your fresh Jenkins setup:

http://your_ip_or_domain:8080

Below screen will be displayed which prompts you to enter the admin password generated during setup:

Setting Jenkins

To print the password on your terminal, use the following instructions:

 $ sudo cat /var/lib/jenkins/secrets/initialAdminPassword

The alphanumeric password should be 32 characters long, as shown below:

Output 

3226*****************************

Copy your terminal password, paste it in the password field for the Administrator and click on Continue.

Costomize Jenkins

On the next screen, you are asked if you would like to install or pick certain plugins. To begin the installation process instantly, just click on the Install suggested plug-ins box.

Started window of Jenkins

When the installation is finished, the first administrative user is prompted for the setting. Fill in all the necessary data. and click the Save and Continue.

Creating first admin user in Jenkins

On your next page, the URL for the Jenkins instance will be requested. An automatically produced URL will be added to the URL field.

Instance configuration in Jenkins

To finish the configuration, click the Save and Finish button to verify the setup.

Window of Jenkins is ready

Finally,  click start using  Jenkins Button to start the process and the user we created in one of the past steps as admin user will log in Jenkins dashboard.

Jenkins welcome window

You have effectively mounted Jenkins on your CentOS scheme when you have reached this point.

Jenkins Installation on Mac

Prerequisite

  • A Mac machine with Mac OSX Yosemite or higher with admin access
  • Installation of Java Development Kit on the machine.
  • Access to Git, Svn, etc. remote repository.

Download Jenkins installer.pkg file from Jenkins ' official website and get through the wizard setup.

Jenkins official website and get through the wizard setup

The jenkins setup wizard sets up a distinct Jenkins user on your system.We need to make some changes in the ‘Users & Groups’ section as well. Do follow below steps.

  • Open ‘System Preferences -> Users & Groups’
  • Click on the Lock icon located in the bottom left corner which reads, ‘Click the lock to make changes’. Enter your login password.
  • Under the ‘Other Users’ section you may see the user without any name but with admin rights. This is our Jenkins user. Let's rename it.
  • Right-click the empty user and select Advanced Options. This will show you all the details. Give the ‘Full name’ as Jenkins. Press OK
  • Click on ‘Reset Password’. Enter a new password and make sure that you remember this.

Now our Jenkins user is almost ready.This is just like another mac user with admin rights.Now restart your Mac machine and log in with Jenkins user with the password which you just reset.

Click the lock to save the changes and restart the system to login with Jenkins user account.

In localhost Jenkins resides at port 8080.

Open your browser, go to localhost:8080 and make the original set-up, which consists of installing some plugins and creating account for safety purpose.

Welcome to Jenkins

Setting Jenkins as Launch agent

  • Jenkins operates by default as a daemon. A daemon is a non-interactive background that operates in the entire scheme and is not linked to a particular user.
  • Much of CI runs simulators and other GUI apps, so another option is required. You can modify Jenkins as a launch agent to resolve this. On behalf of the user, a launch agent operates behind the scenes.
  • You need to edit the settings folder and alter your place to begin rebooting automatically if you want to alter how the Jenkins process is started.
  • Enter the below command to unload Jenkins as a Daemon
    sudolaunchctlunload/Library/LaunchDaemons/org.jenkins-ci.plist
  • Next, migrate to the LaunchAgents folder the.plist file which defines how Jenkins will be running.
    sudo mv /Library/LaunchDaemons/org.jenkins-ci.plist /Library/LaunchAgents/
  • Start the jenkins again and now it will run as launch agent.
Ashish

Ashish Kumar

Senior Technology Specialist

Ashish is working as a Senior Technology Specialist in leading financial bank has more than 13 years of experience in developing enterprise applications

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It could be for production or staging. The commodity is supplied to a consumer base that can provide QA or inspection by customers. Developers update the code regularly in the shared repository (such as GitHub or TFS). Improvements made in the source code are made at the end of the day, making it difficult to identify the errors. So, Jenkins is used here. Once a developer changes the repository, Jenkins will automatically enable the build and immediately warn you in the event of an error (Continuous Integration CI). Installation Procedure: Step 1: Install Java Skip to the next section if you have Java already installed on your system. To check, please run the following command in the terminal: java --version Jenkins needs Java for running, but it doesn't include certain distributions by default, and Java versions of Jenkins are incompatible. Multiple Java implementations are available to you. OpenJDK is currently the most popular one, which we will use in this guide. Being an open-source Java application, Jenkins requires the installation of OpenJDK 8 on your system. The apt repositories can directly access OpenJDK 8. The installation of OpenJDK from standard repositories is recommended. Open and enter the following in the terminal window: $ sudo apt update  $ sudo apt install openjdk-8-jdk The download and installation will be requested. Press the "Y" button and press the Enter button to finish the process. Java 8 will be installed on your system. We are ready to download Jenkins package now as we have our requirements ready! Step 2: Install Jenkins The default Ubuntu packages for Jenkins are always behind the current version of the project itself. You may use the project-maintained packages to install Jenkins to take advantage of the newest patches and features. 1. add the framework repository key: $ wget -q -O - https://pkg.jenkins.io/debian-stable/jenkins.io.key | sudo apt-key add  The device returns OK when the key is inserted. 2. Next, link the repository of Debian packages to the sources.list of the server: $ sudo sh -c 'echo deb http://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list' 3. When both are in place, upgrade to apt to use the new repository: $ sudo apt update 4. Install Jenkins: $ sudo apt install jenkins Now we're going to start the Jenkins server, as Jenkins and its dependencies are in place. Step 3: Start Jenkins 1. You can start Jenkins using systemctl: $ sudo systemctl start jenkins 2. As systemctl does not display performance, you can use the status command to check that Jenkins has successfully launched: $ sudo systemctl status jenkinsIf all went well, the start of the performance should demonstrate that the service is active and ready to boot: Output: jenkins.service - LSB: Start Jenkins at boot time     Loaded: loaded (/etc/init.d/jenkins; generated)     Active: active (exited) since Sat 2021-04-17 00:34:17 IST; 26s ago       Docs: man:systemd-sysv-generator(8)    Process: 17609 ExecStart=/etc/init.d/jenkins start (code=exited, status=0/SUCC As Jenkins is running, so adjust the firewall rules to complete our further setup of Jenkins from the web browser. Step 4: Opening the Firewall 1. Jenkins works by default on port 8080, so let's open the port with ufw: $ sudo ufw allow 8080  2. Check ufw’s status: $ sudo ufw status You will see that traffic from anywhere is permitted to port 8080. Output: Status: active  To                         Action      From  --                         ------      ----  8000                       ALLOW       Anywhere                    CUPS                       ALLOW       Anywhere                    27017                      ALLOW       Anywhere                    27017                      ALLOW       192.168.1.10                8080                       ALLOW       Anywhere                    8000 (v6)                  ALLOW       Anywhere (v6)               CUPS (v6)                  ALLOW       Anywhere (v6)               27017 (v6)                 ALLOW       Anywhere (v6)               8080 (v6)                  ALLOW       Anywhere (v6) 3. If the firewall is inactive, the following commands will allow OpenSSH and turn it back on: $ sudo ufw allow OpenSSH  $ sudo ufw enable We can finish the initial configuration with Jenkins installed and our firewall configured. Note: If you decide to continue to use Jenkins, use a Nginx Reverse Proxy at Ubuntu 18.04 to configure Jenkins with SSL when your exploration has been completed to protect your passwords and any sensitive system or product information sent between the machine and the server in plain text. Step 5: Setting Up Jenkins 1. To set up installation, visit Jenkins on its default 8080 port with your server domain name or IP address: http://your_server_ip_or_domain:8080 You should see the Unlock Jenkins screen, which displays the initial password's location:2. You can use the cat command to display the password: $ sudo cat /var/lib/jenkins/secrets/initialAdminPassword 3. Copy the alphanumeric terminal 32-character password and paste into the Administrator Password field, then click Continue. Output: 0aaaf00d9afe48e5b7f2a494d1881326 The following screen shows the ability to install or select certain plugins: 4. We will click on the option to install proposed plugins to start the installation process immediately. 5. When the installation is done, the first administrative user will be prompted. You can save this step and use your initial password to continue as an Admin. However, we will take some time to create the user. The Jenkins default server is NOT encrypted to prevent data from being protected. Use the Nginx Reverse Proxy on Ubuntu 18.04 to configure Jenkins with SSL. This protects the information of users and builds transmitted through the web interface. 6. You will see a configuration instance page, which asks you to confirm your Jenkins instance's URL of choice. Confirm either your server's domain name or the IP address of your server.  7. Click Save and Finish once you have confirmed the relevant information. A confirmation page will show you that "Jenkins is ready!"  Hit Start using Jenkins button and it will take you to the Jenkins dashboard.  Congratulations! You have completed the installation of Jenkins. Step 6: Creation of New Build Jobs in Jenkins: The freestyle job is a highly versatile and user-friendly choice. It's easy to set up and many of its options appear in many other build jobs. For all projects, you can use it. Follow the following steps: You have to login to your Jenkins Dashboard by visiting2) Create New item: Click on the New Item on the left-hand side of the dashboard.3) Fill the project description: You can enter the job details as per your need.4) Source Code Management: Under source code management, enter the repository URL.You can also use a Local repository. 5) Build Environment: Now in the Build section, Click on the “Add build Setup” Select "Execute Windows batch command".Now, add the java commands. In this article, we have used javac HelloWorld.java and java HelloWorld.   6) Save the project: Click Apply and save the project. 7) Build Source Code and check its status: Click on “Build Now” on the left-hand side of the screen to create the source code. 8) Console Output: Select the build number and click on “Console Output” to check the status of the build run. When it shows success, it means that we have successfully run the HelloWorld program from the cGitHub Repository. In case of failure, you can check the job logs by clicking on failure icon and debug the root cause.Uninstall Jenkins Follow the instructions to uninstall Jenkins: $ sudo apt-get remove jenkins Uninstall Jenkins: $ sudo apt-get remove --auto-remove jenkins Purging your data: $ sudo apt-get purge jenkins or you can use: $ sudo apt-get purge --auto-remove jenkins Conclusion: Installing Jenkins on Ubuntu is really that easy. Jenkins has a low learning curve and so you can start to work with it as quickly as possible. In the above article we have learned how to install Jenkins in an Ubuntu machine where all the steps are explained clearly. In case you want to learn more about the core concepts of Jenkins Jobs, Pipelines, Distributed System, Plugins, and how to use Jenkins in depth you can enroll for our course Jenkins Certification Course. 
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How To Install Jenkins on Ubuntu

Jenkins is a Java-built open-source Continuous In... Read More

How to install Jenkins on a Mac

Jenkins is a Java-built open-source Continuous Integration (CI) and Continuous Deployment (CD) platform. Basically, Jenkins builds software projects, checks and deploys them. This is one of the most practical programming tools you can master, and today we will show you how to install Jenkins on your macOS, and how to use this powerful tool to activate your VPS server. VPS copies a dedicated server environment in a shared server.Jenkins is loved by teams of all sizes, for different language projects like Java, Ruby, Dot Net, PHP etc. Jenkins is a platform that is autonomous, and can be used on Windows, Mac or any other operating system.In this article, we will learn how to install Jenkins on Mac OS.Why Use Jenkins?To understand Jenkins, you will need to consider continuous integration (CI) and continuous delivery (CD):Continuous integration – the practice of continually merging the working copies of developers with the main repository.Continuous delivery – constantly delivering the code to an area once it is ready for delivery. It could be for production or staging. The commodity is supplied to a consumer base that can provide QA or inspection by customers.Developers update the code regularly in the shared repository (such as GitHub or TFS). Improvements made in the source code are made at the end of the day together, making it difficult to identify the errors. To avoid this, Jenkins is used here.Once a developer changes the repository, Jenkins will automatically enable the build and immediately warn you in the event of an error (Continuous Integration CI).We can also automate the post-construction tests with Jenkins (unit test, success test, acceptance test). Jenkins will conduct these tests and produce a report whenever progress is achieved (Continuous Delivery CD).Why is Jenkins so popular?Easy to use – simple, intuitive, and visually appealing user interfaceExtensibility – Jenkins is highly versatile and easy to adapt to your requirements. With various functionalities, there are thousands of open-source Plugins.Jenkins supports various version control systems, code indicators, notifiers, user interface adaptations, and more!How does Jenkins work?As a WAR archive and as an Installer package, Jenkins is distributed as a Homebrew package, an image in the Docker and as source code for the main operating systems. Most of the source code is in Java and contains several Groovy, Ruby, and Antlr files.You can run the Jenkins WAR on a Java application server such as Tomcat on your own or as a servlet. In any event, the web user interface is created and calls to its REST API are accepted.When you first run Jenkins, you create a long random password for the administrative user, which you may paste in your first webpage to unlock the installation.PrerequisitesWe will be going to run multiple jobs on Jenkins, so we need some proper configurations.Hardware Requirements:Minimum requirement:RAM– 256 MB Storage- 1 GB of Hard Disk Space For small teams(recommended):RAM- 4 GB Storage- more than 50 GB of Hard Disk Space Software Requirements:The following list shows the minimum software requirements:Java: Java Development Kit (JDK) or Java Runtime Environment (JRE). Web Browser: Any browser such as Google Chrome, Mozilla Firefox, Microsoft Edge, SafariOperating System: macOSInstallation ProcedureWe will discuss two ways to install Jenkins on your macOS:Using Homebrew packageUsing DockerInstall Jenkins using HomebrewStep1: Install HomebrewYou can install Homebrew with the following command:$ /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"You can check the Homebrew installation using:$ brew  -–versionStep 2: Install JavaSkip to the next section if you have Java already installed on your system.Being an open-source Java application, Jenkins requires the installation of OpenJDK 8 on your system. The apt repositories can directly access OpenJDK 8.The installation of OpenJDK from standard repositories is recommended. Open and enter the following in the terminal window:$ brew install javaStep 3: Install JenkinsAfter Homebrew has been installed, it is required to execute the command that downloads and installs the latest version of Jenkins' Long-Term Support (LTS).$ brew install jenkins-ltsStep 4: Start the Server:You can run the following command to start the Jenkins server finally.$ brew services start jenkins-ltsThe above command will start the Jenkins server soon. The port will be 8080. You can check it by visiting Jenkins on its default 8080 port with your server domain name or IP address: http://localhost:8080/Step 5: Unlock Jenkins:The Unlock Jenkins screen displays the initial password's location:Use the cat command to display the password:$ cat In this case,$ cat /Users/ijs/.jenkins/secrets/initialAdminPasswordCopy the 32-character password and paste it into the Administrator Password field, then click Continue.We will discuss the steps to complete the setup process at the end in the section How to configure Jenkins?Install Jenkins using DockerStep 1: Install DockerIt's pretty easy to install Docker on Mac. It has a file with the .dmg graphical installer. Docker Engine, CLI client, Compose, Kitematic and Docker Machine, provided for installation.1. Download Docker from install docker desktop. You will get a .dmg file  2. Click on the .dmg file and it will ask you to move the Docker app to the Application Folder.3. Once the Docker icon has been dragged to the Applications folder, double-click the Docker icon and you will be asked if you want to open the App. Click on yes, to open Docker installer.4. Click on the Next button and after this, it will ask you to install tools and will ask your permissions to proceed:5. Now, you will see the Docker icon on the toolbar, which means that Docker is starting on your system.Step 2: Run the Jenkins Docker imageAfter installation and set-up of Docker, you can run the following command to install Jenkins:$ docker run -p 8080:8080 -p 50000:50000 -v ~/jenkins_home:/var/jenkins_home jenkins/jenkins:ltsThis command will download Jenkins' current version of Long-Term Support (LTS) and spin a new Docker container. This might take time for installation.Step 3: Get the installation password:You will be asked for the administrator password and you will also see the location where you can find it when you visit Jenkins on its default 8080 port with your server domain name or IP address: http://localhost:8080/We can refer to the steps above for the location of the password.How to Configure Jenkins?After the installation of Jenkins, we have to configure Jenkins to make it ready.Step 1: Install PluginsJenkins has many plugins that can integrate with open-source project. The next move requires the installation of suitable plugins as per your requirement.  You can easily add or delete plugins later.  As of now we can simply install the suggested plugins.Jenkins is currently the leading open-source automation server for all types of development work with around 1600 plugins. These 1,600 plug-ins cover five fields: platforms, UI management, management of source code, and build management most commonly.Now, you have to create an admin user account. Make sure you note down the username and password as they would be needed later.Step 3: Jenkins URL ConfigurationThe last step is to configure the URL for the server.Click Save and Finish once you have confirmed the relevant information. A confirmation page will show you that "Jenkins is ready!"Finally, click on Start using Jenkins and you will see a dashboard.How to start and stop Jenkins?When you install Jenkins using HomebrewRun the following command to stop the Jenkins server:$ brew services stop jenkins-ltsRun the following command to restart the server again:$ brew services restart jenkins-ltsWhen you install Jenkins using DockerTo stop Jenkins, go to the terminal window where the Docker container was started and enter command + C. This will stop the Docker container from running and also stop Jenkins.If you need to restart Jenkins, execute the same command that you used while installing Jenkins.How to Uninstall Jenkins on Mac?Jenkins is an automation platform focused on servers and is usually concerned with security. Jenkins also requires add-ons for projects written in languages other than Java. These additional components normally bloat Jenkins. Follow the steps to see how to uninstall Jenkins on Mac when you're having trouble or notice that Jenkins doesn't work on Mac.If you have installed Jenkins using Homebrew then you should run the following commands to uninstall Jenkins:$ brew uninstall jenkins --force $ brew cleanupLearn more about the core concepts of Jenkins Jobs, Pipelines, Distributed System, Plugins with Jenkins Certification Course.ConclusionInstalling Jenkins on mac is very easy. Jenkins has a low learning curve and you can start to work with it as quickly as possible.There are some popular alternatives to Jenkins. One of these tools is Zuul, which does not allow broken code to integrate into your main branch, with various gate configurations like inter-project testing, cross-project dependencies and testing in parallel.In this tutorial, you have learnt to install Jenkins using the packages provided by the project. You have started the server, opened the firewall, and created an administrative user. You can now begin to explore Jenkins!
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How to install Jenkins on a Mac

Jenkins is a Java-built open-source Continuous Int... Read More

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