[JENA-1989] No log output with Fuseki+Tomcat9+Systemd

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Jena 3.16.0
• Fix Version/s: Jena 3.17.0
• Component/s: Fuseki
• Assignee: Andy Seaborne
• Reporter: Andy Seaborne
• Created: 07/Nov/20 16:07
• Updated: 01/Dec/20 14:32
• Resolved: 10/Nov/20 20:52

Description

Running Fuseki and Tomcat9 with systemd shows a number of problems:

1. /etc/fuseki/ is not accessible - Tomcat9 with systemd is sandboxed and /etc/fuseki is not writable. (Fix: document that systemd needs configuring).
2. Log output handled differently. systemd captures stdout and sends it to the system journal. There is no catalina.out. (Fix: document how to setup systemd)
3. log4j2 setup happens as the webapp starts and before Fuseki initialization is called. Result - the Fuseki configuration is not used. Fix: Use the log4j-web artifact and configure web.xml.

The servlet/log setup probably applies to Fuseki logging for log4j2 in Tomcat8 as well but I can't install the stabndard setupo of tomcat8 and systemd because it is no longer available in the Ubuntu repos (Ubuntu 20.10).