Hello,   Please check the following link with the hostname and /etc/hosts recommendations https://docs.cloudera.com/cdpdc/7.0/installation/topics/cdpdc-configure-network-names.html   Additionally, remember that the hostnames must be fully qualified domain name (FQDN)   example: 1.1.1.1 foo-1.example.com foo-1 2.2.2.2 foo-2.example.com foo-2 3.3.3.3 foo-3.example.com foo-3 4.4.4.4 foo-4.example.com foo-4   ... View more