title: Connection to dev@redshift-cluster-1. failed
body: <p>I am using DataGrip to connect to my AWS Redshift cluster.
  Unfortunately, the connection failed.</p>
  
  <pre><code>Connection to dev@redshift-cluster-1.cfioxtdojc5x.eu-central-1.redshift.amazonaws.com failed. [28000][10100] [Amazon][JDBC](10100) Connection Refused: [Amazon][JDBC](11640) Required Connection Key(s): UID; [Amazon][JDBC](11480) Optional Connection Key(s): AccessKeyID, AuthMech, AutoCreate, BlockingRowsMode, ClusterID, DbGroups, DisableIsValidQuery, DriverLogLevel, EndpointUrl, FilterLevel, IAMDuration, Language, loginTimeout,
  </code></pre>
  
  <p>I checked jdbc driver,it seems OK</p>
  
  <p><a href="https://i.stack.imgur.com/uQDby.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/uQDby.png" alt="enter image description here"></a></p>
  
  <p>Properties
  <a href="https://i.stack.imgur.com/afXaZ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/afXaZ.png" alt="enter image description here"></a></p>
  
  <p>What else could cause this problem?</p>
  
  <p>VPC?</p>