title: Getting Mysql2::Error (SSL connection error: ASN: bad other signature confirmation) on Heroku App with AWS RDS
body: <p><code>Mysql2::Error (SSL connection error: ASN: bad other signature confirmation):</code></p>
  <p>I am making an administration site. The environment is Rails 4.2 and Ruby 2.2, connecting AWS RDS with Heroku server.
  I don't know why getting this error. It suddenly appeared. I can't find any errors other than this. Although I passed my codes two days ago, I got this error this time.(I haven't touched this code while the two days.)</p>
  <p>How can I solve this problem?</p>