using Azure.Identity;
using Azure.ResourceManager;
using Azure.ResourceManager.MySql;
using Azure.ResourceManager.MySql.FlexibleServers;
ArmClient client = new ArmClient(new DefaultAzureCredential());
Resource Hierarchy
Subscription
└── ResourceGroup
└── MySqlFlexibleServer # MySQL Flexible Server instance
├── MySqlFlexibleServerDatabase # Database within the server
├── MySqlFlexibleServerFirewallRule # IP firewall rules
├── MySqlFlexibleServerConfiguration # Server parameters
├── MySqlFlexibleServerBackup # Backup information
├── MySqlFlexibleServerMaintenanceWindow # Maintenance schedule
└── MySqlFlexibleServerAadAdministrator # Entra ID admin
Core Workflows
1. Create MySQL Flexible Server
using System;
using Azure.ResourceManager.MySql.FlexibleServers;
using Azure.ResourceManager.MySql.FlexibleServers.Models;
ResourceGroupResource resourceGroup = await client
.GetDefaultSubscriptionAsync()
.Result
.GetResourceGroupAsync("my-resource-group");
MySqlFlexibleServerCollection servers = resourceGroup.GetMySqlFlexibleServers();
MySqlFlexibleServerData data = new MySqlFlexibleServerData(AzureLocation.EastUS)
{
Sku = new MySqlFlexibleServerSku("Standard_D2ds_v4", MySqlFlexibleServerSkuTier.GeneralPurpose),
AdministratorLogin = "mysqladmin",
AdministratorLoginPassword = Environment.GetEnvironmentVariable("MYSQL_ADMIN_PASSWORD") ?? throw new InvalidOperationException("MYSQL_ADMIN_PASSWORD is required"),
Version = MySqlFlexibleServerVersion.Ver8_0_21,
Storage = new MySqlFlexibleServerStorage
{
StorageSizeInGB = 128,
AutoGrow = MySqlFlexibleServerEnableStatusEnum.Enabled,
Iops = 3000
},
Backup = new MySqlFlexibleServerBackupProperties
{
BackupRetentionDays = 7,
GeoRedundantBackup = MySqlFlexibleServerEnableStatusEnum.Disabled
},
HighAvailability = new MySqlFlexibleServerHighAvailability
{
Mode = MySqlFlexibleServerHighAvailabilityMode.ZoneRedundant,
StandbyAvailabilityZone = "2"
},
AvailabilityZone = "1"
};
ArmOperation<MySqlFlexibleServerResource> operation = await servers
.CreateOrUpdateAsync(WaitUntil.Completed, "my-mysql-server", data);
MySqlFlexibleServerResource server = operation.Value;
Console.WriteLine($"Server created: {server.Data.FullyQualifiedDomainName}");
// List servers in resource group
await foreach (MySqlFlexibleServerResource server in resourceGroup.GetMySqlFlexibleServers())
{
Console.WriteLine($"Server: {server.Data.Name}");
Console.WriteLine($" FQDN: {server.Data.FullyQualifiedDomainName}");
Console.WriteLine($" Version: {server.Data.Version}");
Console.WriteLine($" State: {server.Data.State}");
Console.WriteLine($" SKU: {server.Data.Sku.Name} ({server.Data.Sku.Tier})");
}
// List databases in server
await foreach (MySqlFlexibleServerDatabaseResource db in server.GetMySqlFlexibleServerDatabases())
{
Console.WriteLine($"Database: {db.Data.Name}");
}
MySqlFlexibleServerResource server = await resourceGroup
.GetMySqlFlexibleServerAsync("my-mysql-server");
// Stop server (saves costs when not in use)
await server.StopAsync(WaitUntil.Completed);
// Start server
await server.StartAsync(WaitUntil.Completed);
// Restart server
await server.RestartAsync(WaitUntil.Completed, new MySqlFlexibleServerRestartParameter
{
RestartWithFailover = MySqlFlexibleServerEnableStatusEnum.Enabled,
MaxFailoverSeconds = 60
});
9. Update Server (Scale)
MySqlFlexibleServerResource server = await resourceGroup
.GetMySqlFlexibleServerAsync("my-mysql-server");
MySqlFlexibleServerPatch patch = new MySqlFlexibleServerPatch
{
Sku = new MySqlFlexibleServerSku("Standard_D4ds_v4", MySqlFlexibleServerSkuTier.GeneralPurpose),
Storage = new MySqlFlexibleServerStorage
{
StorageSizeInGB = 256,
Iops = 6000
}
};
ArmOperation<MySqlFlexibleServerResource> operation = await server
.UpdateAsync(WaitUntil.Completed, patch);
10. Delete Server
MySqlFlexibleServerResource server = await resourceGroup
.GetMySqlFlexibleServerAsync("my-mysql-server");
await server.DeleteAsync(WaitUntil.Completed);
Key Types Reference
Type
Purpose
MySqlFlexibleServerResource
Flexible Server instance
MySqlFlexibleServerData
Server configuration data
MySqlFlexibleServerCollection
Collection of servers
MySqlFlexibleServerDatabaseResource
Database within server
MySqlFlexibleServerFirewallRuleResource
IP firewall rule
MySqlFlexibleServerConfigurationResource
Server parameter
MySqlFlexibleServerBackupResource
Backup metadata
MySqlFlexibleServerAadAdministratorResource
Entra ID admin
MySqlFlexibleServerSku
SKU (compute tier + size)
MySqlFlexibleServerStorage
Storage configuration
MySqlFlexibleServerHighAvailability
HA configuration
MySqlFlexibleServerBackupProperties
Backup settings
SKU Tiers
Tier
Use Case
SKU Examples
Burstable
Dev/test, light workloads
Standard_B1ms, Standard_B2s
GeneralPurpose
Production workloads
Standard_D2ds_v4, Standard_D4ds_v4
MemoryOptimized
High memory requirements
Standard_E2ds_v4, Standard_E4ds_v4
High Availability Modes
Mode
Description
Disabled
No HA (single server)
SameZone
HA within same availability zone
ZoneRedundant
HA across availability zones
Best Practices
Use Flexible Server — Single Server is deprecated
Enable zone-redundant HA — For production workloads
Use DefaultAzureCredential — Prefer over connection strings
Configure Entra ID authentication — More secure than SQL auth