This is the output when I try manually start Confluence at the foreground:
[confluence@atlassian bin]$ ./start-confluence.sh -fg
executing as current user
If you encounter issues starting up Confluence, please see the Installation guide at http://confluence.atlassian.com/display/DOC/Confluence+Installation+Guide
Server startup logs are located in /opt/atlassian/confluence/logs/catalina.out
Using CATALINA_BASE: /opt/atlassian/confluence
Using CATALINA_HOME: /opt/atlassian/confluence
Using CATALINA_TMPDIR: /opt/atlassian/confluence/temp
Using JRE_HOME: /opt/atlassian/confluence/jre/
Using CLASSPATH: /opt/atlassian/confluence/bin/bootstrap.jar:/opt/atlassian/confluence/bin/tomcat-juli.jar
Using CATALINA_PID: /opt/atlassian/confluence/work/catalina.pid
01-May-2019 11:41:10.720 WARNING [main] org.apache.tomcat.util.digester.SetPropertiesRule.begin [SetPropertiesRule]{Server} Setting property 'debug' to '0' did not find a matching property.
01-May-2019 11:41:10.823 WARNING [main] org.apache.catalina.startup.SetAllPropertiesRule.begin [SetAllPropertiesRule]{Server/Service/Connector} Setting property 'debug' to '0' did not find a matching property.
01-May-2019 11:41:10.831 WARNING [main] org.apache.tomcat.util.digester.SetPropertiesRule.begin [SetPropertiesRule]{Server/Service/Engine} Setting property 'debug' to '0' did not find a matching property.
01-May-2019 11:41:10.836 WARNING [main] org.apache.tomcat.util.digester.SetPropertiesRule.begin [SetPropertiesRule]{Server/Service/Engine/Host} Setting property 'debug' to '0' did not find a matching property.
01-May-2019 11:41:10.906 WARNING [main] org.apache.tomcat.util.digester.SetPropertiesRule.begin [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'debug' to '0' did not find a matching property.
01-May-2019 11:41:11.441 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-nio-8090"]
01-May-2019 11:41:11.482 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read
01-May-2019 11:41:11.515 INFO [main] org.apache.catalina.startup.Catalina.load Initialization processed in 971 ms
01-May-2019 11:41:11.522 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service Tomcat-Standalone
01-May-2019 11:41:11.522 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet Engine: Apache Tomcat/8.0.33
01-May-2019 11:41:11.582 SEVERE [Standalone-startStop-1] org.apache.catalina.startup.HostConfig.beforeStart Unable to create directory for deployment: /opt/atlassian/confluence/conf/Standalone/localhost
Killed
Self-hosting on Linux.
