title: Cannot connect to cloud SQL [SQLSTATE[HY000] [2002] No such file or directory]
body: <p>I have set up 2 projects in my Google Cloud console. The following are the two projects that I have set up in my console. 
   1. Cloud SQL + App Engine
   2. App Engine (New)</p>
  
  <p>So the idea is App Engine (1) is running the same database as App Engine (2). I have already set up the IAM Permission Page and IAM Admin and Project Page. </p>
  
  <p>I have given both projects as Project Editor role too, but still my (2) still can't connect to my (1) database. </p>
  
  <p>Any help please?</p>