I'm running NiFi in docker. I'm trying to enable flow debugs and also to determine if NiFi can actually see in my data directory path. I'm trying to use a simple recursive list file processor to find the files based on a regular expression "^c.r".
I can docker exec into the container and can see that the nifi container can "see" into my filepath OK:
nifi@4f614c6c67c4:/data/sftp/cdr$ ls -1t | head -5 | egrep '^c.r' cdr_AP2-HKG-CCP-UCM_12_201905281539_35251 cdr_AP2-HKG-CCP-UCM_06_201905281539_297892 cmr_AP2-HKG-CCP-UCM_06_201905281539_297892 cdr_AP9-SYD-UCCE-UCM_05_201905281539_200435 cdr_AP2-HKG-CCP-UCM_11_201905281539_98483
However, I can't get the ListFile processor to work and find those files. Any ideas on debugging strategies?