Re: Missing nifi-app.log files

I had same observation. I was trying to collect concise logs to open a JIRA and deleted all the existing logs but NiFi did not generate new logs after cleanup. I had to restart NiFi to generate new logs. On Thu, Aug 17, 2017 at 4:57 PM, Russell Bateman wrote: > James, > >

Re: Missing nifi-app.log files

I didn't realize that. I'll see if -F is available in my case. Thank you very much Andrew. -Jim On Thu, Aug 17, 2017 at 5:36 PM, Andrew Grande wrote: > Typically this is better handled by using the -F switch instead of -f, it > has more robust file handling and manages files

Re: Missing nifi-app.log files

Typically this is better handled by using the -F switch instead of -f, it has more robust file handling and manages files disappearing correctly. Unfortunately, some OS don't have that switch in their toolchain. Andrew On Thu, Aug 17, 2017, 5:07 PM James McMahon wrote: >

Re: Missing nifi-app.log files

Interesting. Thank you Russ. I wonder whether I somehow interrupted or deleted the log file when I "ctrl-C"`ed out of the tail -f ? I'll have to test that and see. -Jim On Thu, Aug 17, 2017 at 4:57 PM, Russell Bateman wrote: > James, > > It's the case that, NiFi running,

Re: Missing nifi-app.log files

Hi Pierre. Very interesting you ask that. While we do not, when I last performed the service nifi stop/start, I was indeed employing a 'tail -f ./nifi-app.log' so that I could see when the jetty server was ready to support access through the UI. Why do you ask about this? Jim On Thu, Aug 17,

Re: Missing nifi-app.log files

Hi James, Out of curiosity do you have a TailFile processor configured to tail the NiFi log file? Thanks Le 17 août 2017 22:11, "James McMahon" a écrit : Thank you Joe. I agree and will monitor it closely going forward. I suspect there were some external factors at play

Re: Missing nifi-app.log files

Thank you Joe. I agree and will monitor it closely going forward. I suspect there were some external factors at play here. On Thu, Aug 17, 2017 at 4:05 PM, Joe Witt wrote: > Ok if 50,000 is the max then i'm doubtful that it ran out. > > In the event of exhaustion of allowed

Re: Missing nifi-app.log files

Ok if 50,000 is the max then i'm doubtful that it ran out. In the event of exhaustion of allowed open file handle count NiFi will run but its behavior will be hard to reason over. That means it cannot create any new files or open existing files but can merely operate using the handles it already

Re: Missing nifi-app.log files

50,000. Is NiFi robust enough that it can continue to run without the log file for write attempts? It is back up and running like a champ now, so I will keep an eye on it. On Thu, Aug 17, 2017 at 3:40 PM, Joe Witt wrote: > It sounds like a case of exhausted file handles. > >

Re: Missing nifi-app.log files

It sounds like a case of exhausted file handles. Ulimit -a How many open files are allowed for the user nifi runs as? On Aug 17, 2017 12:26 PM, "James McMahon" wrote: > Our nifi instance appeared to be running fine but we noticed that there > were no log files for today

Missing nifi-app.log files

Our nifi instance appeared to be running fine but we noticed that there were no log files for today in the logs subdirectory. We could not find any nifi logs for today anywhere on our system. I was surprised that NiFi continued to run. Has anyone experienced such behavior? How is NiFi able to