• Click the "Manage Jenkins" link.
  
  
• Click the "Global Tool Configuration" link.
  
  

To add a new JDK installation, Click the "Add JDK" button.
Set the following properties:

• Uncheck "Install automatically"
  
• Name: openjdk-11.0.2_linux-x64
  
• JAVA_HOME: /opt/openjdk-11.0.2_linux-x64
  

Download and install SonarQube Scanner:

• Run the following command to download SonarQube Scanner:
  $ wget https://binaries.sonarsource.com/Distribution/sonar-scanner-cli/sonar-scanner-cli-4.0.0.1744-linux.zip
  If this link is not available, please see: https://docs.sonarqube.org/latest/analysis/scan/sonarscanner/
  
  
• Extract the file "sonar-scanner-cli-4.0.0.1744-linux.zip" in the folder you want to install SonarQube Scanner: /opt/sonar-scanner-4.0.0.1744-linux
  $ unzip sonar-scanner-cli-4.0.0.1744-linux.zip -d /opt/
  
• Change the folder permissions:
  $ sudo chmod -R 755 /opt/sonar-scanner-4.0.0.1744-linux/ $ sudo chown -R jenkins:jenkins /opt/sonar-scanner-4.0.0.1744-linux/
  
• Create a symbolic link of the SonarQube Scanner installation folder:
  $ sudo ln -s /opt/sonar-scanner-4.0.0.1744-linux/ /opt/sonar-scanner $ sudo chown -R jenkins:jenkins /opt/sonar-scanner
  
• Configure the "sonar-scanner.properties".
  Uncomment and modify the following properties:
  $ su - jenkins
  $ vi /opt/sonar-scanner/conf/sonar-scanner.properties #----- Default SonarQube server sonar.host.url=http://localhost:9000

To add new SonarQube Scanner installation, Click the "Add SonarQube Scanner" button.
Set the following properties:

• Uncheck "Install automatically"
  
• Name: SonarQube-Scanner
  
• SONAR_RUNNER_HOME: /opt/sonar-scanner
  

To add a new Maven installation, Click the "Add Maven" button.
Set the following properties:

• Uncheck "Install automatically"
  
• Name: apache-maven
  
• MAVEN_HOME: /opt/apache-maven