title: MySQL database connections broke after DataGrip Upgrade (2021.3.x)
body: <p>After upgrading DataGrip to version 2021.3.2, my existing db connections were broken.  I connect to various DBs (Oracle, MySql) via an SSH tunnel configured to connect through an AWS bastion host.</p>
  <p>After the upgrade - DataGrip suggested that the MySql driver had to be updated to Amazon Aurora MySQL driver and it no longer worked to connect where it worked before the upgrade.</p>
  <p>Switching between drivers I get two separate errors:</p>
  <p>First Error using Amazon Aurora MySQL (suggested driver after update)</p>
  <blockquote>
  <p>[08000][-1] Could not connect to address=(host=localhost)(port=53929)(type=master) : (conn=57522706) could not load system variables[08000][1220] (conn=57522706) Connection is closed.</p>
  </blockquote>
  <p>and second error using original MySQL driver</p>
  <blockquote>
  <p>[08S01]<br />
  Communications link failure</p>
  <p>The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.<br />
  No appropriate protocol (protocol is disabled or cipher suites are inappropriate).</p>
  </blockquote>
  <p>All of my connections worked immediately prior to the DataGrip upgrade - so seems that upgrade requires new drivers, which have a problem with the way I connect.</p>