Jenkins and Maven Contd..

• Setting different Java or other tools in jenkins
• Manage Jenkins => Global Tool Configuration => JDK
  
  

Lets create a jenkins freestyle project to build game of life

• General Section: General information about project
  
• Source Code Management: This section is about version control information of the project
  
• Build Triggers: When to trigger the build
  
• Build Environment:
  
• Build Steps: What has to be done to build the project
  
• Post Build Actions: What has to be done After Build
  
• Save the project now
• Lets explore home directory of jenkins JENKINS_HOME
  
• Lets view the contents of config.xml. This file is representation of the job which we configured in the free style i.e. UI
  
• When we build the project, jenkins create a folder with project’s name in workspace, this folder is referred as workspace for the job
  
• Lets configure for Game of life
  
  
  
  
• When we run the project we get unit test results (Postbuild actions => Publish Test Results)
  
  
  
  
• To show the artifact we can use (Post Build Actions => Archive the artifacts)
  
  
  
  

Plugin in Jenkins

• A plugin to jenkins is an additional functionality provided.
• Installing plugin will add functionality for jenkins not installation on the jenkins master node
• To Manage Plugins
  
  

Build Executors

• A Build Executor on a Jenkins node determines how many projects can be built parallely
  
• A individual project by default gets only one executor, if you want to change this, Execute concurrent builds in the General section
  
• Every node in Jenkins can be configured with number of executors
  • Manage Nodes => Select the Node => Configure => Number of executors
    

Jenkins Distributed Builds

• Jenkins has two types of nodes
  • Master node: This is the node where we install jenkins
  • Node: This is the node on which we can run the job which matches the label defintion.
    
• Adding more nodes increases number of executors which means we can build more projects

Lets add one node which is linux (ubuntu) to the master

• This vm has username and password. we can also configure username and key based ubuntu instances
• In jenkins we have credentials which supports
  • username and password
  • username and key
• Manage Jenkins => Manage Credentials
  
  
  
• To configure node: Manage Jenkins => Manage Nodes
  
  
  
• Ensure on the node JDK 11 and above is installed
  
• Now lets check whether spring petclinic works on node 1 or not
  
  
  
  

Exercise

• Try building a dotnet project Refer Here and node js project Refer Here