Quickstart for using the proxy for local testing

This page shows you how to connect to Cloud SQL from a local test environment using the Cloud SQL Proxy. Connecting through the proxy enables you to test an App Engine application in your local environment, or establish a secure connection for database administration.

Do not use these instructions to set up the proxy for a production environment. For more connection options, see Connection Options for External Applications.

Before you begin

Before performing the steps in this quickstart, you should complete the following tasks:

  • Create a Google Cloud project and a PostgreSQL instance.
  • If you are using a pre-existing project, ensure that your Google Cloud user is an owner of your project, or has a Cloud SQL role other than Cloud SQL Viewer. Otherwise, you should set up the proxy using the instructions outlined in Connecting using the Cloud SQL Proxy.

  • Optionally, install the psql client.

    The client enables you to test your connection to your instance. The psql client can be installed with the server package or alone. See the PostgreSQL installation instructions.

Enable the Cloud SQL API

Enable the Cloud SQL Admin API.

Enable the API

Install and authenticate the gcloud command-line tool

  1. If you haven't already, install the gcloud command-line tool.

    See the gcloud installation instructions.

  2. Initialize the gcloud tool:

    gcloud init

  3. Authenticate the gcloud tool:

    gcloud auth login

Install the Cloud SQL Proxy client on your local machine

The proxy binary you download depends on your operating system, and whether it uses a 32-bit or 64-bit kernel. Most newer hardware uses a 64-bit kernel. If you are unsure whether your machine is running a 64-bit kernel, use the uname -a command for Linux or macOS, or click Computer > Properties in the Start Menu for Windows.

Linux 64-bit

  1. Download the proxy: 
    wget https://dl.google.com/cloudsql/cloud_sql_proxy.linux.amd64 -O cloud_sql_proxy
  2. Make the proxy executable: 
    chmod +x cloud_sql_proxy

Linux 32-bit

  1. Download the proxy: 
    wget https://dl.google.com/cloudsql/cloud_sql_proxy.linux.386 -O cloud_sql_proxy
  2. Make the proxy executable: 
    chmod +x cloud_sql_proxy

macOS 64-bit

  1. Download the proxy: 
    curl -o cloud_sql_proxy https://dl.google.com/cloudsql/cloud_sql_proxy.darwin.amd64
  2. Make the proxy executable: 
    chmod +x cloud_sql_proxy

macOS 32-bit

  1. Download the proxy: 
    curl -o cloud_sql_proxy https://dl.google.com/cloudsql/cloud_sql_proxy.darwin.386
  2. Make the proxy executable: 
    chmod +x cloud_sql_proxy

Windows 64-bit

Right-click https://dl.google.com/cloudsql/cloud_sql_proxy_x64.exe and select Save Link As to download the proxy. Rename the file to cloud_sql_proxy.exe.

Windows 32-bit

Right-click https://dl.google.com/cloudsql/cloud_sql_proxy_x86.exe and select Save Link As to download the proxy. Rename the file to cloud_sql_proxy.exe.
If your operating system isn't included here, you can also compile the proxy from source.

Get the instance connection name

  1. Go to the Cloud SQL Instances page in the Google Cloud Console.

    Go to the Cloud SQL Instances page

  2. Click the instance name to open its Instance details page.

  3. Under Connect to this instance, note the Instance connection name.

Start the proxy

Start the proxy in its own terminal so you can monitor its output. Replace <INSTANCE_CONNECTION_NAME> with the instance connection name you copied in the previous step.

./cloud_sql_proxy -instances=<INSTANCE_CONNECTION_NAME>=tcp:5432

You should see a message similar to:

Listening on 127.0.0.1:5432 for myproject:us-central1:myinstance".
Ready for new connections

Connect to your database using the psql client

This section is optional, but is recommended for testing your connection. See the PostgreSQL installation instructions.

In a different terminal window from where you started the proxy, run the following command, replacing <USERNAME> with your PostgreSQL username, and <DB_NAME> with the name of the database to connect to.

psql "host=127.0.0.1 port=5432 sslmode=disable dbname=<DB_NAME> user=<USER_NAME>"

You should see the psql prompt. A message similar to the following should appear in the proxy terminal:

New connection for "myproject:us-central1:myinstance"

What's next