Great article!

I would like to add that using the Cloud SQL Proxy v2 (gcr.io/cloud-sql-connectors/cloud-sql-proxy:latest) they added the --quitquitquit endpoint to achieve the same result.

In order to use it, you should do something like the following:

• in your main container's args add trap “curl -X POST localhost:9091/quitquitquit” EXIT
• in the proxy container, add to the args --quitquitquit to enable the endpoint
• add to the proxy container ports - containerPort: 9091 (it should not be necessary, but I was not able to make it work without).