Hi, I'm struggling with an Druid issue on my 5-KVM cluster with Hadoop, Spark, Zookeeper and Druid. Zookeeper seems to be running OK, since I cant get the nodes that are following and the leader with commands like

echo stat | nc -v hadoop-master 2181

. Also, I've configured the zoo.cfg file with lines like this (at

hadoop-master

, in this case):

server.1=0.0.0.0:2888:3888
server.2=hadoop-worker1:2888:3888
server.3=hadoop-worker2:2888:3888
server.4=spark-worker1:2888:3888
server.5=spark-worker2:2888:3888

Druid runs without erros, except for Router, which sends a log with the exception

org.apache.druid.java.util.common.IOE: No known server

. Coordinator shows this warning:

org.apache.druid.server.coordinator.duty.RunRules - Uh... I have no servers. Not assigning anything...

. In fact, Druid UI shows some exceptions and doesn't show the coordinator service (see images). Coordinator is running at

hadoop-master

, data (middleManager and Historical) at

hadoop-worker1

, another data node at

hadoop-worker2

and query node (Broker and Router) at

spark-worker1

. What I am supposed to try? Thanks.