A Question about stopping brokers

[Kyle . Hu]

Hi, ALL :
      When I execute kafka-server-stop.sh in bin directory, I got an error “No 
kafka server to stop” while my brokers running well, I don’t know how to stop 
it for a long time, I always kill the precess when I like to stop it. What is 
the recommended way to stop it ? Looking award to your reply.