You can find SonarQube initial password from EC2 management console System Log.

• Go to Amazon EC2 console at https://console.aws.amazon.com/ec2/.
• Chose your Instance and Click Actions → Monitor and troubleshoot → Get System log.

You can also SSH into your instance and find the login credential using the following command.

$ cat /home/ec2-user/credentials 
////////////////////credentials info//////////////////// 
--- SonarQube 
----- User: admin 
----- Password : kVsxPJpd 
--- PostgreSQL 
----- User: sonarqube 
----- Password : LbBKexIJoVOAOUlBFoyX //////////////////////////////////////////////////////// 

Input initial password, “kVsxPJpd” in this case, and click “Log in”.

You will see top page as below.