I have deleted Elastic searcg logs files and now logs are not coming up

Hi Guys,
Using ubutnu 16.04,elastic search 6 and inside the /var/log/elasticsearch, I have run sudo rm * to clean all the old log files. it's not writing new logs file anymore. It will be great if somebody can give me idea how the new log files will start writing up again. Many thanks!

It's coming up again after restarting the server