title: Connect to GCE Cloudsql instance via private IP
body: <p>I am currently setting up my first GCE kubernetes cluster, having previously used mainly AWS for this.</p>
  
  <p>Cluster is up and running and can access a local NFS server on the same compute engine VPC via private IP, so one stage of private network connection is fine.</p>
  
  <p>Cloudsql server is running and can access this fine from the cluster if I open up public ip to the world.</p>
  
  <p>Have enabled private ip address on the cloudsql which looks good, but I cannot ping or connect from the same container that can reach the public ip.</p>
  
  <p>Cloudsql private ip is a different subnet which I believe is to be expected.
  Checked VPC Network peering and got a relevant looking rule.
  Checked VPC routes and got the matching peering route with next hop.</p>
  
  <p>I have seen in docs that private ip is still beta, so guess potential to be a glitch beyond my control.
  Also read up on running a proxy container inside each pod - hesitant to do this unless only option, app may end up across platforms so would prefer more standard config.</p>