Creating and Building Jobs in Jenkins

Here I will show you an example on creating and building jobs in Jenkins. We know that Jenkins is a build tool that helps us to automate building, releasing and deploying of the application to appropriate environment. But before we start building application, we need to create a job for that application. Then only we will be able to run build repeatedly as and when required by just clicking on the job name. Here are few other tutorials and one of them you have to go through before you read this tutorial:

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Manage Jenkins – Configuring JDK, GIT and Maven

Here I will show you how to manage Jenkins – configuring JDK, GIT and Maven installations. We build mainly Java applications (also .NET applications) using Jenkins. Therefore we need to have everything which are required to perform build operation of Java applications, i.e., we need to have JDK, GIT or SVN or any other source repository and Maven or Gradle in order to build the applications.

You may also like to read:

Jenkins setup in Windows

Creating and building jobs in Jenkins

Jenkins: Detecting the current branch failed: ref HEAD is not a symbolic ref

Deploy both war and jar files into Nexus using maven in Jenkins

Continue reading “Manage Jenkins – Configuring JDK, GIT and Maven”

Jenkins Setup in Windows

Jenkins setup in Windows shows you how you can configure the most popular build tool in Windows environment. If you have ever worked on production support or support project where you need to monitor the applications as well as you need to enhance the application then you may find Jenkins setup in Windows server mainly.

Most notable features of Jenkins are given below

Jenkins is the leading open source automation server, Jenkins provides hundreds of plugins to support building, deploying and automating any project.

Jenkins is a self-contained Java-based program, ready to run out-of-the-box, with packages for Windows, Mac OS X and other Unix-like operating systems.

Jenkins can be easily set up and configured via its web interface, which includes on-the-fly error checks and built-in help.

As an extensible automation server, Jenkins can be used as a simple CI server or turned into the continuous delivery hub for any project.

With hundreds of plugins in the Update Center, Jenkins integrates with practically every tool in the continuous integration and continuous delivery toolchain.

Jenkins can be extended via its plugin architecture, providing nearly infinite possibilities for what Jenkins can do.

Jenkins can easily distribute work across multiple machines, helping drive builds, tests and deployments across multiple platforms faster.

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Jenkins: Detecting the current branch failed: fatal: ref HEAD is not a symbolic ref

I’ve moved some of my projects from SVN to GIT. In Jenkins, builds are working fine but when I try to release, I get the following stack trace

 Waiting for Jenkins to finish collecting data
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-release-plugin:2.0:prepare (default-cli) on project hello_world_app: An error is occurred in the checkin process: Exception while executing SCM command. Detecting the current branch failed: fatal: ref HEAD is not a symbolic ref -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

I think this is a common issue sometimes occur when we try to release a project in Jenkins though the project itself may be successfully built when we run the build using link “Build Now”.

For example, you have the project in GIT repository and there you have branches like “develop” and “master”. When you want to release the project for deploying on Dev, SIT and UAT, you would like to build and release from “develop’ branch, and when you want the project for production release then you would like to build and release from “master” branch. Therefore, you want to click on “Perform maven release” in Jenkins to release an artifact for the project either from “develop” or “master” branch and you may face the error similar to the following

“Detecting the current branch failed: fatal: ref HEAD is not a symbolic ref”

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Deploy both war and jar files into Nexus using maven in Jenkins

This tutorial will show you how to deploy both war and jar file from an web application using maven in Jenkins. By default when we build the web project in Jenkins then war file gets uploaded into nexus but not jar file.

Sometimes we need to upload both war and jar files from an web application using maven because some other standalone project needs to include the jar file of the web application and some another web project may need to include the war file of the web application. Hence we require to upload both war and jar files into Nexus. Continue reading “Deploy both war and jar files into Nexus using maven in Jenkins”