Can't run Sonar Server caused by Elasticsearch cannot running as root

SonarSource has upgraded the Elasticsearch tool used as a part of the latest SonarQube LTS version. As a result SonarQube cannot be run as a root. See this blog and the SonarQube 6.6 upgrade notes and this SO question.

Change the root access to the sonar file. Try running in normal user access.

chown <another user>:<user group> sonar.sh