Client session timed out

[Sabina Marx]

Hi,

I have a 5 nodes kafka cluster with 3 zookeepers. If I restart 1 node 
(zookeeper and kafka) the kafka gets a Client session timed out, have not heard 
from server in 6007ms for sessionid 0x0 (org.apache.zookeeper.ClientCnxn)
Client session timed out, have not heard from server in 6007ms for sessionid 
0x0, closing socket connection and attempting reconnect 
(org.apache.zookeeper.ClientCnxn)
And my kafka service do not start.
I have set the tickTime=6000 in the zookeeper.properties but that didn’t help. 
What can I do?

Many thanks for your help.
Sabina