SonarQube is an open-source code inspection tool, that is used to review code vulnerabilities, code smell, and code quality in a source code, by using the Static code analysis method of comparing the source code with coding rules. The advantage or benefit of learning SonarQube is that, you will get to know the code quality of your codes, and how is it evolving. It also tracks these throughout coding, to help you understand and debug when and wherever necessary. Moreover, SonarQube, supports 20 Programming Languages, so, using this tool you can check for the overall code quality.
If you wish to learn more about DevOps and want to break into this domain, check out the DevOps certification course from Intellipaat, and look at the following YouTube video on Introduction SonarQube.