While awaiting setup of a new development environment, we were trying to test some concepts in an HDF sandbox running in VirtualBox (version 5.2.16r123759(Qt5.6.2)) on Windows 7 (Windows 7 Enterprise Service pack 1 with 32 GB RAM and 64-bit Operating System). At a high level, our test was to transfer JSON records from Kafka to PostGres. I found HDF 3.1 already has Postgres 9.2.23 installed. I did the following: 1) Port 5432 was added to VirtualBox Port Forwarding Rules, as shown in the attachment. 2) Windows Hosts file was updated, as shown in the attachment. 3) Postgres /var/lib/pgsql/data/pg_hba.conf was modified according to https://docs.hortonworks.com/HDPDocuments/HDF3/HDF-3.1.1/bk_installing-hdf/content/postgres-remote-connections.html 4) Postgresql service was successfully stopped and restarted 5) From the shell-in-a-box console, psql was used to create a mytest login and database, as shown in the attachment. 6) From Windows, psql aborts with error "psql: server closed the connection unexpectedly...", as shown in the attachment. I am able to connect into the sandbox using WinSCP on port 2202 to transfer files with File Protocal: SCP. Kindly let me know any suggestions to allow Windows psql to connect to Postgres in HDF running in VirtualBox, Harold ... View more