Tutorial: Design an Azure Database for MariaDB using PowerShell

Azure Database for MariaDB is a relational database service in the cloud based on MariaDB Community Edition database engine. In this tutorial, you use PowerShell and other utilities to learn how to:

Prerequisites

If you don't have an Azure subscription, create a trial account before you begin.

If you choose to use PowerShell locally, this article requires that you install the Az PowerShell module and connect to your Azure account using the Connect-AzAccount cmdlet. For more information about installing the Az PowerShell module, see Install Azure PowerShell.

If this is your first time using the Azure Database for MariaDB service, you must register the Microsoft.DBforMariaDB resource provider.

Register-AzResourceProvider -ProviderNamespace Microsoft.DBforMariaDB

If you have multiple Azure subscriptions, choose the appropriate subscription in which the resources should be billed. Select a specific subscription ID using the Set-AzContext cmdlet.

Set-AzContext -SubscriptionId 00000000-0000-0000-0000-000000000000

Create a resource group

Create an Azure resource group using the New-AzResourceGroup cmdlet. A resource group is a logical container in which Azure resources are deployed and managed as a group.

The following example creates a resource group named myresourcegroup in the China East 2 region.

New-AzResourceGroup -Name myresourcegroup -Location chinaeast2

Create an Azure Database for MariaDB server

Create an Azure Database for MariaDB server with the New-AzMariaDbServer cmdlet. A server can manage multiple databases. Typically, a separate database is used for each project or for each user.

The following example creates a MariaDB server in the China East 2 region named mydemoserver in the myresourcegroup resource group with a server admin login of myadmin. It is a Gen 5 server in the general-purpose pricing tier with 2 vCores and geo-redundant backups enabled. Document the password used in the first line of the example as this is the password for the MariaDB server admin account.

$Password = Read-Host -Prompt 'Please enter your password' -AsSecureString
New-AzMariaDbServer -Name mydemoserver -ResourceGroupName myresourcegroup -Sku GP_Gen5_2 -GeoRedundantBackup Enabled -Location chinaeast2 -AdministratorUsername myadmin -AdministratorLoginPassword $Password

The Sku parameter value follows the convention pricing-tier_compute-generation_vCores as shown in the following examples.

• -Sku B_Gen5_1 maps to Basic, Gen 5, and 1 vCore. This option is the smallest SKU available.
• -Sku GP_Gen5_32 maps to General Purpose, Gen 5, and 32 vCores.
• -Sku MO_Gen5_2 maps to Memory Optimized, Gen 5, and 2 vCores.

For information about valid Sku values by region and for tiers, see Azure Database for MariaDB pricing tiers.

Consider using the basic pricing tier if light compute and I/O are adequate for your workload.

Configure a firewall rule

Create an Azure Database for MariaDB server-level firewall rule using the New-AzMariaDbFirewallRule cmdlet. A server-level firewall rule allows an external application, such as the mysql command-line tool or MariaDB Workbench to connect to your server through the Azure Database for MariaDB service firewall.

The following example creates a firewall rule named AllowMyIP that allows connections from a specific IP address, 192.168.0.1. Substitute an IP address or range of IP addresses that correspond to the location that you are connecting from.

New-AzMariaDbFirewallRule -Name AllowMyIP -ResourceGroupName myresourcegroup -ServerName mydemoserver -StartIPAddress 192.168.0.1 -EndIPAddress 192.168.0.1

Get the connection information

To connect to your server, you need to provide host information and access credentials. Use the following example to determine the connection information. Make a note of the values for FullyQualifiedDomainName and AdministratorLogin.

Get-AzMariaDbServer -Name mydemoserver -ResourceGroupName myresourcegroup |
  Select-Object -Property FullyQualifiedDomainName, AdministratorLogin

FullyQualifiedDomainName                    AdministratorLogin
------------------------                    ------------------
mydemoserver.mariadb.database.chinacloudapi.cn       myadmin

Connect to the server using the mysql command-line tool

Connect to your server using the mysql command-line tool. To download and install the command-line tool, see MariaDB Community Downloads.

mysql -h mydemoserver.mariadb.database.chinacloudapi.cn -u myadmin@mydemoserver -p

Create a database

Once you’re connected to the server, create a blank database.

mysql> CREATE DATABASE mysampledb;

At the prompt, run the following command to switch the connection to this newly created database:

mysql> USE mysampledb;

Create tables in the database

Now that you know how to connect to the Azure Database for MariaDB database, complete some basic tasks.

First, create a table and load it with some data. Let's create a table that stores inventory information.

CREATE TABLE inventory (
  id serial PRIMARY KEY,
  name VARCHAR(50),
  quantity INTEGER
);

Load data into the tables

Now that you have a table, insert some data into it. At the open command prompt window, run the following query to insert some rows of data.

INSERT INTO inventory (id, name, quantity) VALUES (1, 'banana', 150);
INSERT INTO inventory (id, name, quantity) VALUES (2, 'orange', 154);

Now you have two rows of sample data into the table you created earlier.

Query and update the data in the tables

Execute the following query to retrieve information from the database table.

SELECT * FROM inventory;

You can also update the data in the tables.

UPDATE inventory SET quantity = 200 WHERE name = 'banana';

The row gets updated accordingly when you retrieve data.

SELECT * FROM inventory;

Restore a database to a previous point in time

You can restore the server to a previous point-in-time. The restored data is copied to a new server, and the existing server is left unchanged. For example, if a table is accidentally dropped, you can restore to the time just the drop occurred. Then, you can retrieve the missing table and data from the restored copy of the server.

To restore the server, use the Restore-AzMariaDbServer PowerShell cmdlet.

Run the restore command

To restore the server, run the following example from PowerShell.

$restorePointInTime = (Get-Date).AddMinutes(-10)
Get-AzMariaDbServer -Name mydemoserver -ResourceGroupName myresourcegroup |
  Restore-AzMariaDbServer -Name mydemoserver-restored -ResourceGroupName myresourcegroup -RestorePointInTime $restorePointInTime -UsePointInTimeRestore

When you restore a server to an earlier point-in-time, a new server is created. The original server and its databases from the specified point-in-time are copied to the new server.

The location and pricing tier values for the restored server remain the same as the original server.

After the restore process finishes, locate the new server and verify that the data is restored as expected. The new server has the same server admin login name and password that was valid for the existing server at the time the restore was started. The password can be changed from the new server's Overview page.

The new server created during a restore does not have the VNet service endpoints that existed on the original server. These rules must be set up separately for the new server. Firewall rules from the original server are restored.

Next steps