Simple Client Connecting to Google Cloud SQL using Cloud SQL Proxy

Question

I'm following this example of how to get wordpress running on GKE connected to Google Cloud SQL via the Google Cloud SQL Proxy:

https://cloud.google.com/sql/docs/mysql/connect-container-engine

Unfortunately, my wordpress pod is failing with a crashloop error, and it's not clear from the documentation how to dig deeper into the reason for this. Here is a sample of the error:

bash-3.2$ kubectl get pods| egrep wordpress
wordpress-713960421-v4f49     0/2       CrashLoopBackOff   16         20m

(kubectl describe pod ...)

11m   22s     36      kubelet, gke-noon-staging-default-  pool-d500b601-dfb6                                    Warning FailedSync         Error syncing pod, skipping: [failed to "StartContainer" for "web" with   CrashLoopBackOff: "Back-off 5m0s restarting failed container=web   pod=wordpress-713960421-v4f49_default(f64276d2-5660-11e7-a565-42010a9a0023)"
 , failed to "StartContainer" for "cloudsql-proxy" with    CrashLoopBackOff: "Back-off 5m0s restarting failed container=cloudsql-proxy    pod=wordpress-713960421-v4f49_default(f64276d2-5660-11e7- a565-42010a9a0023)"  
 ]

My questions are:

• How to dig further into why the pod is failing to deploy with cloud sql proxy
• Has anyone got an example working for using cloud sql proxy with as simple mysql client pod?

Here is a description of the deployment (kubectl describe wordpress):

https://pastebin.com/DjYM97R7

And a description of the pod (kubectl describe ):

https://pastebin.com/pN7gUZg8

Thanks in advance!