title: Syntax for filters for aws rds describe-db-instances
body: <p>When we run the command using filters we are getting the error:</p>
  
  <pre><code>$ aws rds describe-db-instances --filters Name=instance-state-name,Values=running
  
  An error occurred (InvalidParameterValue) when calling the
  DescribeDBInstances operation: Unrecognized filter name: instance-state-name.
  </code></pre>
  
  <p>What is the correct syntax for using filters for <code>aws rds describe-db-instances</code>?</p>