Splunk forwarder not working

1. Logs are not splunk despite splunk showing as running:

2. Looking at the PID 13223, there is nothing specific to splunk running at this PID.

3. For some reasons, splunk PID remained hanged, so manually remove pid file from under "/opt/splunkforwarder/var/run/splunk" and start splunk.

4. This time everything fine and log files are splunked.