./zkServer.sh status Error contacting service. It is probably not running
https://stackoverflow.com/a/29950279/6419332
You can easily debug it by zkServer.sh start-foreground
zkServer.sh start-foreground makes it run out of demon mode!!!
The Zookeeper servers are not able to find their myid file under the dataDir.Here the dataDir is set as /usr/local/zookeeper/, Create the myid files directly under the defined dataDir.
Restart Zookeeper servers after making the changes.