Create Cloud SQL instance using Terraform script
Cloud SQL with Terraform
In this hands-on lab you will learn how to create Cloud SQL instances with Terraform, then set up the Cloud SQL Proxy, testing the connection with a MySQL client.
In this lab, you will:
- Create a Cloud SQL instance
- Install the Cloud SQL Proxy
- Test connectivity with MySQL client using Cloud Shell
Setup and Requirements
Before you click the Start Lab button
Read these instructions. Labs are timed and you cannot pause them. The timer, which starts when you click Start Lab, shows how long Google Cloud resources will be made available to you.
This hands-on lab lets you do the lab activities yourself in a real cloud environment, not in a simulation or demo environment. It does so by giving you new, temporary credentials that you use to sign in and access Google Cloud for the duration of the lab.
What you need
To complete this lab, you need:
- Access to a standard internet browser (Chrome browser recommended).
- Time to complete the lab.
Note: If you already have your own personal Google Cloud account or project, do not use it for this lab.
Note: If you are using a Chrome OS device, open an Incognito window to run this lab.
How to start your lab and sign in to the Google Cloud Console
Click the Start Lab button. If you need to pay for the lab, a pop-up opens for you to select your payment method. On the left is a panel populated with the temporary credentials that you must use for this lab.
Copy the username, and then click Open Google Console. The lab spins up resources, and then opens another tab that shows the Sign in page.
Tip: Open the tabs in separate windows, side-by-side.
In the Sign in page, paste the username that you copied from the left panel. Then copy and paste the password.
Important: You must use the credentials from the left panel. Do not use your Google Cloud Training credentials. If you have your own Google Cloud account, do not use it for this lab (avoids incurring charges).
Click through the subsequent pages:
- Accept the terms and conditions.
- Do not add recovery options or two-factor authentication (because this is a temporary account).
- Do not sign up for free trials.
After a few moments, the Cloud Console opens in this tab.
Activate Cloud Shell
Cloud Shell is a virtual machine that is loaded with development tools. It offers a persistent 5GB home directory and runs on the Google Cloud. Cloud Shell provides command-line access to your Google Cloud resources.
In the Cloud Console, in the top right toolbar, click the Activate Cloud Shell button.
It takes a few moments to provision and connect to the environment. When you are connected, you are already authenticated, and the project is set to your PROJECT_ID. For example:
gcloud is the command-line tool for Google Cloud. It comes pre-installed on Cloud Shell and supports tab-completion.
You can list the active account name with this command:
You can list the project ID with this command:
Cloud SQL is a fully managed database service that makes it easy to set up, maintain, manage, and administer your relational databases on Google Cloud. You can use Cloud SQL with either MySQL or PostgreSQL.
Download necessary files
Create a directory and fetch the required Terraform scripts from the Cloud Storage bucket with:
Unzip the downloaded content.
Understand the code
Take a look at the contents of the
terraform init command is used to initialize a working directory containing Terraform configuration files.
This command performs several different initialization steps in order to prepare a working directory for use. This command is always safe to run multiple times, to bring the working directory up to date with changes in the configuration.
terraform plan command is an optional but recommended command and is used to create an execution plan. Terraform performs a refresh, unless explicitly disabled, and then determines what actions are necessary to achieve the desired state specified in the configuration files.
This command is a convenient way to check whether the execution plan for a set of changes matches your expectations without making any changes to real resources or to the state. For example,
terraform plan might be run before committing a change to version control, to create confidence that it will behave as expected.
-out argument can be used to save the generated plan to a file for later execution with
terraform apply command is used to apply the changes required to reach the desired state of the configuration or the pre-determined set of actions generated by a
terraform plan execution plan.
Apply the Terraform plan you just created:
This will take a little while to complete. Once complete you will see an output as below:
Test Completed Task
Click Check my progress to verify your performed task.
Cloud SQL Proxy
What the proxy provides
Accessing your Cloud SQL instance using the Cloud SQL Proxy offers these advantages:
- Secure connections: The proxy automatically encrypts traffic to and from the database using TLS 1.2 with a 128-bit AES cipher; SSL certificates are used to verify client and server identities.
- Easier connection management: The proxy handles authentication with Cloud SQL, removing the need to provide static IP addresses.
How the Cloud SQL Proxy works
The Cloud SQL Proxy works by having a local client, called the proxy, running in the local environment. Your application communicates with the proxy with the standard protocol used by your database. The proxy uses a secure tunnel to communicate with its companion process running on the server.
The following diagram shows how the proxy connects to Cloud SQL:
Installing the Cloud SQL Proxy
Download the proxy:
Make the proxy executable:
You can install the proxy anywhere in your environment. The location of the proxy binaries does not impact where it listens for data from your application.
Proxy startup options
When you start the proxy, you provide it with the following sets of information:
- What Cloud SQL instances it should establish connections to
- Where it will listen for data coming from your application to be sent to Cloud SQL
- Where it will find the credentials it will use to authenticate your application to Cloud SQL
The proxy startup options you provide determine whether it will listen on a TCP port or on a Unix socket. If it is listening on a Unix socket, it creates the socket at the location you choose; usually, the
/cloudsql/ directory. For TCP, the proxy listens on
localhost by default.
Test connection to the database
Start by running the Cloud SQL proxy for the Cloud SQL instance:
Run the following command:
Now you'll start another Cloud Shell tab by clicking on plus (+) icon. You'll use this shell to connect to the Cloud SQL proxy.
Get the generated password for MYSQL:
Test the MySQL connection:
When prompted, enter the value of
MYSQL_PASSWORD, found in the output above, and press Enter.
You should successfully log into the MYSQL command line. Exit from MYSQL by typing Ctrl + d.
If you go back to the first Cloud Shell tab you'll see logs for the connections made to the Cloud SQL Proxy.
Test your Understanding
Below are multiple-choice questions to reinforce your understanding of this lab's concepts. Answer them to the best of your abilities.
In this lab, you used Terraform to create a Cloud SQL instance and set up the Cloud SQL Proxy. You then tested the connection between the two with a MySQL client.
Finish Your Quest
This self-paced lab is part of the Managing Cloud Infrastructure with Terraform and Cloud SQL Quests. A Quest is a series of related labs that form a learning path. Completing this Quest earns you one of the badges above, to recognize your achievement. You can make your badge public and link to them in your online resume or social media account. Enroll in Managing Cloud Infrastructure with Terraform or Cloud SQL and get immediate completion credit if you've taken this lab. See other available Qwiklabs Quests.
Take Your Next Lab
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Manual Last Updated January 19, 2021
Lab Last Tested January 19, 2021
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