Can't change SYSTEM password

I have a free AWS Amazon trial of SAP HANA developers edition.

I'm seeing this...

The free trial came with Cockpit and I was able to set my SYSTEM password there, but I'm still seeing...

sid-hdb:/usr/sap/HDB/HDB00> hdbsql  -n localhost -i 00 -u SYSTEM

Password:

* 10: authentication failed SQLSTATE: 28000

sid-hdb:/usr/sap/HDB/HDB00>

Then I try to reset the password using these instructions, still can't do it.

http://help.sap.com/saphelp_hanaplatform/helpdata/en/df/025d7abb5710148ba8b0ed6476b597/content.htm?frameset=/en/2d/806eca19be40d99f3e56f356870bcc/frameset.htm&current_toc=/en/00/0ca1e3486640ef8b884cdf1a050fbb/plain.htm&node_id=325

nameserver vhcalhdbdb:30001 not responding. retry in 5 sec...

nameserver vhcalhdbdb:30001 not responding. retry in 5 sec...

nameserver vhcalhdbdb:30001 not responding. retry in 5 sec...

nameserver vhcalhdbdb:30001 not responding. retry in 5 sec...

nameserver vhcalhdbdb:30001 not responding. retry in 5 sec...

I ultimately want to connect to SAP HANA via JDBC, but I can't seem to get the SYSTEM database account working.  Does Cockpit not handle this on the database side?