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Creating a PostgreSQL Cloud SQL instance

This guide will take you through building and accessing a PostgreSQL Cloud SQL instance. You’ll need to have signed up and logged into Brightbox Manager.

Click Cloud SQL in the navigation bar on the left and you’ll get the list of your existing Cloud SQL instances, if you have any.

Click New Cloud SQL Instance and a dialog box will pop up. Choose a name for your new instance, and a suitable size for your use case (see the pricing page for a list of the type specs and prices).

Then click the Engine select box, which defaults to MySQL, and choose PostgreSQL. The Version select box should auto-switch to 11

You can choose a specific datacentre zone if you like, by setting a Location or one will be chosen for you. It’s best to put your Cloud SQL instances in the same zone as the cloud servers that will be connecting to it, to avoid cross-zone traffic.

There are a few other options you might want to customise which we’ll go through now, but you can change any of these at any time after creation so don’t worry.

Access Control

If you click the Access Control tab you’ll see that the default access to the new instance will be only from cloud servers in the default group. You can add as many rules as you like here. As an example, in the screenshot above, you can see the default rule as been changed to allow access from cloud servers in a web servers group (which of course will contain all the web servers that are going to be using this cloud sql instance).

Additionally, you might want to grant access to an external IP address, such as your office network, so you can access the instance directly over the internet to manage it.

Scheduled Snapshots

If you click the Scheduled snapshots tab you’ll see the default frequency and time that has been chosen to take automatic snapshots of the new instance, which you can customise if you like. In this example, it is daily at 2am (UTC) which means a snapshot of the instance will be taken each night at 2am and stored in Orbit. Snapshots are seamless and do not interrupt service.

Maintenance Window

If you click the Maintenance Window tab you’ll see the default day and hour that automated maintenance will take place. During this time each week, any necessary security updates are rolled out and may interrupt service - usually only short interrupts as their instance is restarted for the updates to take effect. So choose an appropriate time for your requirements.

Create the instance

Now you’ve set all your options, click Create. A dialog will pop up that displays the PostgreSQL administrator credentials for your new instance. This should be a user named admin and a randomly generated password. Note the password down.

You’ll see the new instance in the list and the status icon will be spinning to show that it’s building. Once it’s finished building it will go green and you can continue with this guide.

Map a Cloud IP to the instance

To access the instance, we need to map a Cloud IP to it. Click the cog button on the right of the instance in the list and select Map Cloud IP. A list of your existing unused Cloud IPs will appear - if you don’t have any yet you can select Create & map new Cloud IP and a new one will be created for you. Choose a Cloud IP and click the Map button. An icon will appear in the Cloud IPs column for your instance to show it has active mappings. If you hover over it you’ll see the Cloud IP identifier and IP address. Note the IP down.

Access the instance

Now we can simply access the instance using a standard PostgreSQL client, such as psql, from anywhere you granted access to when you created the instance (such as from your office IP). Just connect to the Cloud IP address, using the admin username and the auto-generated password you noted down. Be sure to connect to database named postgres:

$ psql -h -U admin postgres
Password for user admin: 
psql (11, server 11)
SSL connection (protocol: TLSv1.2, cipher: ECDHE-RSA-AES256-GCM-SHA384, bits: 256, compression: off)
Type "help" for help.


Create a less privileged user

We recommend that you don’t have your applications use the privileged admin account and instead create unprivileged accounts for each app:

$ psql -h -U admin postgres
Password for user admin: 
psql (11, server 11)
SSL connection (protocol: TLSv1.2, cipher: ECDHE-RSA-AES256-GCM-SHA384, bits: 256, compression: off)
Type "help" for help.

postgres=> CREATE USER blog WITH PASSWORD 'secret';

postgres=> CREATE DATABASE blog;


Reset the admin password

If you lose or forget the admin password, you can reset it at any time. Click the cog button and select Reset admin password from the menu. A new password will be generated for the admin account and displayed to you.

Another reason to use separate accounts for your applications - you can reset the admin password without having to reconfigure anything!

Last updated: 22 May 2019 at 12:17 UTC

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