I'm trying to monitor the log using DX OI log analytics, to do so I have installed standalone log collector and filebeat on one of out server but I am not seeing the logs on OI console.
There should be subfolders under /opt/CA/Spectrum/tomcat/logs separating different types of log files, e.g. for instances, ${FILEBEAT_LOGS_DIR}/tomcat_access/* for Tomcat Access Logs, ${FILEBEAT_LOGS_DIR}/tomcat/* for Tomcat Error (Catalina) Logs, etc.
You need to configure the log file paths in filebeat.yml
Search for ${FILEBEAT_LOGS_DIR}/tomcat/* for Tomcat Error (Catalina) Log paths and replace it with ${FILEBEAT_LOGS_DIR}/catalina.out
Search for ${FILEBEAT_LOGS_DIR}/tomcat_access/* for Tomcat Access Log paths and replace it with ${FILEBEAT_LOGS_DIR}/localhost_access_log.*