Here are a few steps that we can follow to install Jenkins :

1. Install Java Development Kit 8 and set JAVA_HOME as the environment variable. In the Command Prompt or Terminal, verify that Java is installed properly or not by executing the java –version, javac, and java commands. Download jenkins.war from the Jenkins website.

2. To run Jenkins, execute java –jar jenkins.war. Wait until Jenkins is fully up and running.
3. Once Jenkins is fully up and running, open the browser and visit http://<localhost/IP_ADDRESS>:8080.
4. We need to unlock Jenkins first to go ahead with the configuration. Copy the password from the given file location or copy it from the console/terminal from where we executed the Java command.
5. Enter the Administrator password and click on Continue.
6. Install the suggested plugins or select plugins to install.

In this section, we will create a Maven-based Jenkins build job that will execute the pom.xml file for compilation, ubit test execution, and creating a package file. So let's begin!

On the Jenkins dashboard, click on New Item:

As it is a Maven-based project, we will select the Maven project template. In case it is an Ant-based application or any other automation task, then we can select the Freestyle project template to create Build Job. Select Maven project and click on OK. It will open the build job configuration page, as shown in the following screenshot:

In Source Code Management, provide a GitHub URL, SVN URL (install the subversion plugin first), or any repository URL. We can also access the code available on the filesystem:

In the Build section, select the Maven Version that we have configured in the Global Tool Configuration section. Provide...

So, first let's see how to configure SonarQube with Jenkins so that we can perform static code analysis by triggering it from Jenkins.

Go to Manage Jenkins, click on Manage Plugins, and then click on the Available tab. Find the SonarQube plugin and install it.

Go to Manage Jenkins, and then click on Configure System. Find the SonarQube servers section and click on the Add SonarQube server. Provide Server URL and credentials. Get a Server authentication token from SonarQube (Administration | Security | Users) and provide it in Jenkins:

Go to Global Tool Configuration in Manage Jenkins and configure the SonarQube Scanner to install automatically:

Create a new freestyle job in Jenkins. Configure JDK path of agent where SonarQube is installed.

Install the Quality gate plugin as well. By configuring the Quality gate plugin, we can fail the Jenkins build job if SonarQube analysis...

Let's see how to configure e-mail notifications to send the status of job executions to specific stakeholders. Go to Manage Jenkins, click on Configure System, and configure the e-mail settings as shown in the following screenshot:

In the Post-build Actions, select E-mail Notification and configure Recipients. Save it:

We can send a notification if it is an unstable build and we can send an e-mail to the individual who has broken the build.

In the next section, we will see how continuous integration can be performed using Visual Studio Team Services (VSTS).

We often say DevOps has nothing to do with the tools. All tools perform the same operation with some minor variations or flexibility. We will see how continuous integration can be performed using VSTS.

Create an Account in VSTS and create one Project with the name PetClinic.

In this section, we will see how to integrate Eclipse and VSTS so we can commit the code from the local system to VSTS.

Download Eclipse, open it, and click on the Help menu. Select Install New Software.

Add a site to install the TFS plugin in Eclipse so we can commit code to VSTS from the Eclipse directly.

Select Team Explorer Everywhere and click on Next:

Review Install Details and click on Next.

Review...

There is a famous quote by Marcel Proust that says:

We will change the way application packages are created. We may need to go through the same kind of procedures to create a package or a WAR file or an APK file or an IPA file. Hence, we are not seeking new landscape. However, we need to find an efficient way to finish the process effectively and hence we need to look for having new eyes.

In this chapter, we have described in detail how we can perform continuous integration using Jenkins and Visual Studio Team Services. We have seen results of the unit test execution and how packages are created in Jenkins and Visual Studio Team Services.

The most important thing we know is that we need to consider implementation of continuous integration as a DevOps practice doesn't require specific tools. We can use any...