The only prerequisite of running SonarQube is to have Java (Oracle JRE 8 or OpenJDK 8) installed on your machine .https://docs.sonarqube.org/display/SONAR/Requirements

1. LTS version of Sonarqube. https://www.sonarqube.org/downloads/
2. SonarQube-scanner based on your platform. https://docs.sonarqube.org/display/SCAN/Analyzing+with+SonarQube+Scanner

1. Once SonarQube-scanner is downloaded, add below two properties in sonar-scanner.properties:

   #----- Default SonarQube server
   sonar.host.url=http://localhost:9000
   
   #----- Default source code encoding
   sonar.sourceEncoding=UTF-8
   

   sonar-scanner.properties file needs to be placed under location <path_of_sonarqube_scanner/<choose_platform/conf> For e.g. ~/Documents/software/sonar-scanner-3.2.0.1227-macosx/conf

2. Create a sonar-project.properties file in root location of your nodejs app.

3. Add following configuration in the above created properties file:

   # required metdata
   sonar.projectKey=<preferrable_node_app_name>
   sonar.projectVersion=<version>
   sonar.sourceEncoding=<source code encoding>
   
   # path to srouce directories
   sonar.sources=<your_node_app_folder_name>
   
   # excludes
   sonar.exclusions=<files or folder which you want to exclude>
   
   # coverage reporting
   sonar.javascript.lcov.reportPaths=<code coverage location>
   

   Note: These are required for sonar-scanner to analyaze and generate the report accordingly.

Go to SonarQube's downloaded location, and run below command:
```
~<path>/sonarqube-6.7.5/bin/macosx-universal-64 $ ./snoar.sh --help
```
`For e.g.: ~/Documents/software/sonarqube-6.7.5/bin/macosx-universal-64 $ ./sonar.sh --start`

Got to root directory of your project folder where you have created the `sonar-projects.properties` file and run the below command:
```
~<root path of your project> $ sonar-scanner
```
`For e.g. ~/Documents/learning/sonarqube $ sonar-scanner`

1. Get the host url which you have set in the configuration and try accessing it.
2. Default username and password is: admin/admin For e.g. http://localhost:9000/dashboard?id=<project_key>

1. In Windows - bash: sonar-scanner: command not found ** Resolution: Update the PATH environment variable and re-run the command. Steps:

   • Navigate to control panel.
   • Search enviornment keyword from the right-top search bar.
   • Click on the Edit the system environment variables.
   • Click on Enviornment Variables.
   • Look for Path environment variable.
   • Add the sonar-scanner path. For e.g. C:\Users\vikash\Documents\softwares\sonar-scanner-4.5.0.2216-windows\bin
   • In addition if you want to add the sonar-server as well then follow the same steps as above. For e.g. C:\Users\vikash\Documents\softwares\sonarqube-8.5.0.37579\bin\windows-x86-64

   In Mac - bash: sonar-scanner: unknownd command ** Resolution: Update the path environment variable by exporting it and ensure that the same has been updated in the environment path. and re-run the command. Steps to set an environment variable: Link

   Note: sonar-scanner command must be executed from the path where sonar-project.properties file is added.

2. 'nyc' is not recognized as an internal or external command (In Windows) ** Resolution: Follow the below steps to fix:

   • Remove the node_modules
   • Re-run the npm install command from the app folder.
   • You should see the expected output.

3. Code coverage is not being displayed in the Sonarqube dashboard. ** Resolution:

   • We need to ensure that the coverage is generated in the lcov format.
   • Run npm run coverage-lcov command. As a result it generates the coverage in the lcov format and same can be seen from <project_root_path>/app/coverage/lcov-report
   • Re-reun the sonar-scanner command from the path where sonar-project.properties file is defined/added. This generates the analysis report.
   • Navigate to the sonarqube dashboard you should see the coverage statistics.

For any additional help, please write me to the [email protected]. I would be happy to help you!