thank you very much for you quick reply.
With your help I found the problem. The variable $ZOOPIDFILE in the
zkServer.sh script containted the following (weird) string:
And this of course doesn't work. The problem was that in the zoo.cfg
file I had DOS carriage returns. :-(
For some reason this didn't bother the snapshots and logs, as they were
written to my data diretory. But the PID file wasn't there.
Once I fixed this and used UNIX carriage returns, everything works. I
can stop zookeeper now. :-)
Sorry for this stupid error and thanks again for your help.