title: Cannot connect to the sandbox instance due to password authentication failure
body: <p>Hi~~ I'm doing the official tutorial from the <a href="https://greenplum.org/gpdb-sandbox-tutorials/" rel="nofollow noreferrer">follwoing link</a>.</p>
  
  <p>My system is windows 10, I'm using VirtualBox 6.0 and downloaded the latest sandbox.</p>
  
  <p>The following are what I did step by setp:</p>
  
  <p>(1) Boot up: I cannot upload image but the information on boot up are as follow:</p>
  
  <p><code>Hostname: gpdb-sandbox.localdomain
  IP: 192.168.5.138
  GPDB Admin: gpadmin
  GPDB Password: pivotal
  Tutorial User: gpuser 
  Tutorial User Password: pivotal</code></p>
  
  <p>(2) Navigate to pg_hba.conf and add "host all all 0.0.0.0/0 md5" to the last of it</p>
  
  <p>(3) Navigate to postgresql.conf and add "listen_addresses = '*'" to it</p>
  
  <p>(4) Then I loged in the OS and run the following commmand</p>
  
  <p><code>./start_all.sh</code></p>
  
  <p>(5) Then I opened a cmd.exe from my windows and run </p>
  
  <p><code>psql -U gpadmin -h 192.168.5.138 -p 5432 postgres</code></p>
  
  <p>(6) The program replies with request for password, then I typed in "pivotal"</p>
  
  <p>And then the program replies with an authentication failure. Can anyone help me with that so that I can start the first step of the tutorial??</p>
  
  <p>Thanks a lot!</p>