I got the same error and my /etc/servoces looks right, and no datanode being started due to port 50070 is not opened: [root@sandbox ~]# cat /etc/hosts 127.0.0.1 localhost ::1 localhost ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters 172.17.0.2 sandbox.hortonworks.com sandbox [root@sandbox ~]# ... View more