无法获取 nifi 处理器组状态

Question

I am new to Nifi. I have define a processor group in Nifi and I have started the dataflow.

From the backend, how can I check the status of the processor group whether it is running or not?.

I tried

/bin/nifi.sh status

But it only gives the overall nifi status whether it is running or not

Answer 1

you can't see status of a process group because process groups do not have status. Nifi just adds a added log like this

  2021-04-09 13:26:44,766 INFO [main] o.a.nifi.groups.StandardProcessGroup StandardProcessGroup[identifier=feffff20-c806-305a-5d38-2b8def09bebe] added to StandardProcessGroup[identifier=1be26a7f-0175-1000-6d70-e5784c0dde33]

you can see the IDs in 'Operate' table on the right side of canvas.

On the other hand processor based logs can be seen

  2021-04-09 13:40:59,290 INFO [Timer-Driven Process Thread-2] o.a.n.c.s.TimerDrivenSchedulingAgent Scheduled QuickFixInitiator[id=31ee54ea-5043- 3415-6f6e-4b8df429188f] to run with 3 threads

  2021-04-09 13:45:31,164 INFO [Timer-Driven Process Thread-2] o.a.n.c.s.TimerDrivenSchedulingAgent Stopped scheduling QuickFixInitiator[id=31ee54ea-5043-3415-6f6e-4b8df429188f] to run

also via rest api

 http://localhost:8080/nifi-api/processors/31ee54ea-5043-3415-6f6e-4b8df429188f

It is hard to follow nifi rest api doc All the UI requests go through rest api so the best way to learn it watching UI requests in developer console -> network tab