Create Freestyle job in Jenkins || Create build job in Jenkins to automate Java build and deployment of WAR into Tomcat

-

Create Freestyle job in Jenkins || How to create build job in Jenkins to automate Java build and deployment of WAR into Tomcat

Jenkins is popular open source Continuous integration tool. It was written entirely in Java. Jenkins is a self-contained automation server used for automating builds, tests and deployment.

See below the steps for configuring Jenkins to automate the build and deployment for the Java project we already set up in GitHub.


pre-requisites:

  • Also install deploy to container,  Jacoco plugins under Jenkins --> Manage Jenkins --> Manage plug-ins

Click on Available, type Deploy to container, select it. enter Jacoco, select it. Click on Install without restart.

Deploy to container


JaCoCo

Click on without restart.


steps to automate MyWebApp project in Jenkins:

1. Login to Jenkins. Click on New item.

2. Enter an item name --> select Free style project.
enter name as myFirstAutomateJob. click OK.

3. under source code mgmt, click git. enter Bitbucket URL or GitHub URL
Click on your repo, Copy the url from the browser. Paste the url as Repository URL below.


under credentials --> click Add- > select Jenkins -->  enter your GitHub username and Personal Access Token as password. DO NOT use Git Hub password as it is removed from August 13, 2021. 

Enter main as branch specifier or which ever branch you want to check out.

4. select that from drop down.
5. under build trigger click on poll scm, enter this value to check

for every 2 mins --> H/02 * * * *

6. Build --> Add build step --> invoke top level maven targets -->

select Maven3 from drop down and goal as clean install


7. Click on advanced, enter the path of POM file as --> MyWebApp/pom.xml


8. click on Add post build action, select Record Jacoco Code coverage report
  
9. click on Add post build action, select deploy war/ear to container.

 
      for WAR/EAR files enter as 
          **/*.war


in WAR/EAR files, leave context path empty

   10. click on Add container , select Tomcat 9.x

   11. click on add credentials, enter tomcat as user name and password as password.
      select it from drop down.
 


13. tomcat url should be --> http://your_public_dns_name:8080


click Apply, click Save
click on build now..It should build.

if there is any error, please check the console output. Most of the common error would be checking the path of Maven installation, valid credentials for GitHub or Tomcat. Also make sure you install the plug-ins.

After successful deployment, please make sure you check the output in Tomcat by going to browser and enter below URL

You should see Hello World!!!



Comments

Post a Comment

Popular posts from this blog

Install Ansible on Ubuntu | How to setup Ansible on Ubuntu 22.0.4 | Ansible install on Ubuntu

-
Image
Ansible is #1 configuration management tool. It can also be used for  infrastructure   provisioning  as well. or You can use Ansible in combination of Terraform which can take care of infra automation and Ansible can do  configuration  management.   Ansible Architecture:   The best way to install Ansible for Ubuntu is to add the project's PPA (personal package archive) to your system. You also would need Boto framework for provisioning resources in AWS cloud. Pre-requisites Create new Ubuntu EC2 instance for installing Ansible, just open port 22. Change Host Name to AnsibleMgmtNode sudo hostnamectl set-hostname  AnsibleMgmtNode Update Repository sudo apt-get update Install Ansible: sudo apt install ansible sudo apt install python3-pip -y  ( this is just comment -  Package manager for python) Install Boto Framework - AWS SDK sudo pip3 install boto boto3 Ansible will access AWS resources using boto SDK. sudo apt-get install python3-boto -y pip list boto | grep boto (the above command
Read more

Setup build agent/slave VM and Integrate with Jenkins Master

-
Image
Jenkins has powerful feature of master slave architecture which enables distributed builds. This article we will learn how to establish slave nodes on Ubuntu machines and integrate with Jenkins Master. Jenkins Master Your main Jenkins server is the Master. The Master’s job is to handle: Scheduling build jobs. Dispatching builds to the slaves for the actual execution. Monitor the slaves (possibly taking them online and offline as required). Recording and presenting the build results. A Master instance of Jenkins can also execute build jobs directly. Jenkins Slave A Slave is a Java executable that runs on a remote machine. Following are the characteristics of Jenkins Slaves: It hears requests from the Jenkins Master instance. Slaves can run on a variety of operating systems. The job of a Slave is to do as they are told to, which involves executing build jobs dispatched by the Master. You can configure a project to always run on a particular Slave machine, or a particular type of Slave ma
Read more

Install SonaType Nexus 3 using Docker Compose

-
Image
  How to setup SonaType Nexus 3 using Docker compose? Nexus is open source, binary repository manager and Java based tool. It can be installed quickly using Docker with less manual steps. What is Docker Compose? Compose is a tool for defining and running multi-container Docker applications. With Compose, you use a YAML file to configure your application’s services. Then, with a single command, you create and start all the services from your configuration.  Since Docker Compose lets you configure related containers in a single YAML file, you get the same Infrastructure-as-Code abilities as Kubernetes. But they come in a simpler system that’s more suited to smaller applications that don’t need Kubernetes’ resiliency and scaling.   The purpose of  docker - compose  is to function as  docker  cli but to  issue multiple command s much more quickly. To make use of  docker - compose , you  need  to encode the commands you were running before into a  docker - compose . yml  file   Run  docker
Read more