Restore an Azure Database for MySQL - Flexible Server instance using Azure CLI

APPLIES TO: Azure Database for MySQL - Flexible Server

Azure Database for MySQL - Flexible Server, automatically creates server backups and securely stores them in local redundant storage within the region.

This sample CLI script performs a point-in-time restore and creates a new server from your Flexible Server's backups.

The new Flexible Server is created with the original server's configuration and also inherits tags and settings such as virtual network and firewall from the source server. The restored server's compute and storage tier, configuration and security settings can be changed after the restore is completed.

If you don't have an Azure subscription, create an Azure free account before you begin. Currently, with an Azure free account, you can try Azure Database for MySQL - Flexible Server free for 12 months. For more information, see Try Azure Database for MySQL - Flexible Server for free.

Prerequisites

• Use the Bash environment in Azure Cloud Shell. For more information, see Quickstart for Bash in Azure Cloud Shell.

  

• If you prefer to run CLI reference commands locally, install the Azure CLI. If you're running on Windows or macOS, consider running Azure CLI in a Docker container. For more information, see How to run the Azure CLI in a Docker container.

  • If you're using a local installation, sign in to the Azure CLI by using the az login command. To finish the authentication process, follow the steps displayed in your terminal. For other sign-in options, see Sign in with the Azure CLI.

  • When you're prompted, install the Azure CLI extension on first use. For more information about extensions, see Use extensions with the Azure CLI.

  • Run az version to find the version and dependent libraries that are installed. To upgrade to the latest version, run az upgrade.

Sample script

Launch Azure Cloud Shell

The Azure Cloud Shell is a free interactive shell that you can use to run the steps in this article. It has common Azure tools preinstalled and configured to use with your account.

To open the Cloud Shell, just select Try it from the upper right corner of a code block. You can also launch Cloud Shell in a separate browser tab by going to https://shell.azure.com.

When Cloud Shell opens, verify that Bash is selected for your environment. Subsequent sessions will use Azure CLI in a Bash environment, Select Copy to copy the blocks of code, paste it into the Cloud Shell, and press Enter to run it.

Sign in to Azure

Cloud Shell is automatically authenticated under the initial account signed-in with. Use the following script to sign in using a different subscription, replacing <Subscription ID> with your Azure Subscription ID. If you don't have an Azure subscription, create an Azure free account before you begin.

subscription="<subscriptionId>" # add subscription here

az account set -s $subscription # ...or use 'az login'

For more information, see set active subscription or log in interactively

Run the script

# Perform point-in-time-restore of a source server to a new server

# Variable block
let "randomIdentifier=$RANDOM*$RANDOM"
location="East US"
resourceGroup="msdocs-mysql-rg-$randomIdentifier"
tag="restore-server-mysql"
server="msdocs-mysql-server-$randomIdentifier"
restoreServer="restore-server$randomIdentifier"
login="azureuser"
password="Pa$$w0rD-$randomIdentifier"
ipAddress="None"
# Specifying an IP address of 0.0.0.0 allows public access from any resources
# deployed within Azure to access your server. Setting it to "None" sets the server 
# in public access mode but does not create a firewall rule.
# For your public IP address, https://whatismyipaddress.com

echo "Using resource group $resourceGroup with login: $login, password: $password..."

# Create a resource group
echo "Creating $resourceGroup in $location..."
az group create --name $resourceGroup --location "$location" --tags $tag

# Create a MySQL Flexible server in the resource group

az mysql flexible-server create --name $server --resource-group $resourceGroup --location "$location" --admin-user $login --admin-password $password --public-access $ipAddress

# Sleeping commands to wait long enough for automatic backup to be created
echo "Sleeping..."
sleep 15m

# Restore a server from backup to a new server
# To specify a specific point-in-time (in UTC) to restore from, use the ISO8601 format:
# restorePoint=“2021-07-09T13:10:00Z”
restorePoint=$(date +%s)
restorePoint=$(expr $restorePoint - 60)
restorePoint=$(date -d @$restorePoint +"%Y-%m-%dT%T")
echo $restorePoint

echo "Restoring to $restoreServer"
az mysql flexible-server restore --name $restoreServer --resource-group $resourceGroup --restore-time $restorePoint --source-server $server

Clean up resources

Use the following command to remove the resource group and all resources associated with it using the az group delete command - unless you have an ongoing need for these resources. Some of these resources may take a while to create, as well as to delete.

az group delete --name $resourceGroup

Sample reference

This script uses the following commands. Each command in the table links to command specific documentation.

Command	Notes
az group create	Creates a resource group in which all resources are stored
az mysql flexible-server create	Creates a Flexible Server that hosts the databases.
az mysql flexible-server restore	Restore a Flexible Server from backup.
az mysql flexible-server show	Get details of a Flexible Server.
az mysql flexible-server delete	Deletes a Flexible Server.
az group delete	Deletes a resource group including all nested resources.

Next steps

• Try additional scripts: Azure CLI samples for Azure Database for MySQL - Flexible Server
• For more information on the Azure CLI, see Azure CLI documentation.