Installing SonarQube on Ubuntu

To install SonarQube on Ubuntu, we must first make sure we are on the correct Java version. You can check your version using the java -version command. It should be on 8. If you have followed this tutorial, your Java version will not be what SonarQube expects. So, let us first install Java. The add-apt-repository command is new to us. It adds a PPA, or Personal Package Archive, to the repository, telling Ubuntu it should look for updates from that specific package:

sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get -y install oracle-java8-installer
[Ok]
[Yes]
java -version

Now, we can download the SonarQube package and add it to the apt-get sources. You can find the installation steps in the documentation (http://docs.sonarqube.org/display/SONAR/Installing+the+Server). After that, we can update apt-get and install SonarQube. When prompted, choose to install without authentication:

sudo sh -c 'echo deb http://downloads.sourceforge.net/project/sonar-pkg/deb binary/ > /etc/apt/sources.list.d/sonarqube.list'
sudo apt-get update
sudo apt-get install sonar

Now, we need to tell SonarQube how to connect to our database. Open the sonar.properties file with sudo vi /opt/sonar/conf/sonar.properties. Near the top of the file, you will see sonar.jdbc.username= and sonar.jdbc.password=. Change them to sonar.jdbc.username=sonar and sonar.jdbc.password=sonar. After that, scroll further down the file and you will find the settings for PostgreSQL. The only thing you need to do is uncomment the line #sonar.jdbc.url=jdbc:postgresql://localhost/sonar by removing #.

Now, we only need to start SonarQube. You can start and stop it as follows, but do not run these commands just yet:

sudo service sonar start
sudo service sonar stop

Manually starting the SonarQube service whenever the server starts is not an option, so instead, we are going to make sure SonarQube starts at server startup and stops when the server shuts down:

sudo update-rc.d sonar defaults
sudo reboot

This will run sudo service sonar start and stop commands automatically at start and shutdown respectively (more specifically, it will run a sonar script with start or stop as a parameter).

Now, on your host machine, open a browser and browse to ciserver:9000. SonarQube may take a minute or two to start, so if it does not show immediately, try again in a minute.