9000
SonarQube code quality analysis or PHP-FPM FastCGI
SonarQube / PHP-FPM
What is port 9000?
Port 9000 is used by SonarQube, a static code analysis tool for detecting code quality issues, security vulnerabilities, and code smells across 27+ programming languages. It is also used by PHP-FPM (FastCGI Process Manager) as the socket for communication with web servers, and by Hadoop NameNode. SonarQube should run within an internal network or behind a VPN, as it may expose source code metrics.
Quick checks
$
nc -zv example.com 9000
$
nmap -p 9000 example.com
$
telnet example.com 9000