使用 PowerShell 将弹性池添加到故障转移组

项目
12/03/2021

适用于：Azure SQL 数据库

此 Azure PowerShell 脚本示例在 Azure SQL 数据库中创建一个数据库，将其添加到弹性池，创建一个故障转移组，然后测试故障转移。

如果没有 Azure 试用版订阅，请在开始前创建一个试用版订阅。

注意

本文使用 Azure Az PowerShell 模块，这是与 Azure 交互时推荐使用的 PowerShell 模块。若要开始使用 Az PowerShell 模块，请参阅安装 Azure PowerShell。若要了解如何迁移到 Az PowerShell 模块，请参阅将 Azure PowerShell 从 AzureRM 迁移到 Az。

本教程需要 Az PowerShell 1.4.0 或更高版本。如果需要进行升级，请参阅 Install Azure PowerShell module（安装 Azure PowerShell 模块）。如果在本地运行 PowerShell，则还需运行 Connect-AzAccount -Environment AzureChinaCloud 来创建与 Azure 的连接。

示例脚本

# Set variables for your server and database
$subscriptionId = '<Subscription-ID>'
$randomIdentifier = $(Get-Random)
$resourceGroupName = "myResourceGroup-$randomIdentifier"
$location = "China East 2"
$adminLogin = "azureuser"
$password = "PWD27!"+(New-Guid).Guid
$serverName = "mysqlserver-$randomIdentifier"
$poolName = "myElasticPool"
$databaseName = "mySampleDatabase"
$drLocation = "China North 2"
$drServerName = "mysqlsecondary-$randomIdentifier"
$failoverGroupName = "failovergrouptutorial-$randomIdentifier"


# The ip address range that you want to allow to access your server 
# Leaving at 0.0.0.0 will prevent outside-of-azure connections
$startIp = "0.0.0.0"
$endIp = "0.0.0.0"

# Show randomized variables
Write-host "Resource group name is" $resourceGroupName 
Write-host "Password is" $password  
Write-host "Server name is" $serverName 
Write-host "DR Server name is" $drServerName 
Write-host "Failover group name is" $failoverGroupName


# Set subscription ID
Set-AzContext -SubscriptionId $subscriptionId 

# Create a resource group
Write-host "Creating resource group..."
$resourceGroup = New-AzResourceGroup -Name $resourceGroupName -Location $location -Tag @{Owner="SQLDB-Samples"}
$resourceGroup

# Create a server with a system-wide unique server name
Write-host "Creating primary logical server..."
New-AzSqlServer -ResourceGroupName $resourceGroupName `
   -ServerName $serverName `
   -Location $location `
   -SqlAdministratorCredentials $(New-Object -TypeName System.Management.Automation.PSCredential `
   -ArgumentList $adminLogin, $(ConvertTo-SecureString -String $password -AsPlainText -Force))
Write-host "Primary logical server = " $serverName

# Create a server firewall rule that allows access from the specified IP range
Write-host "Configuring firewall for primary logical server..."
New-AzSqlServerFirewallRule -ResourceGroupName $resourceGroupName `
   -ServerName $serverName `
   -FirewallRuleName "AllowedIPs" -StartIpAddress $startIp -EndIpAddress $endIp
Write-host "Firewall configured" 

# Create General Purpose Gen5 database with 2 vCore
Write-host "Creating a gen5 2 vCore database..."
$database = New-AzSqlDatabase  -ResourceGroupName $resourceGroupName `
   -ServerName $serverName `
   -DatabaseName $databaseName `
   -Edition "GeneralPurpose" `
   -VCore 2 `
   -ComputeGeneration Gen5 `
   -MinimumCapacity 1 `
   -SampleName "AdventureWorksLT"
$database

# Create primary Gen5 elastic 2 vCore pool
Write-host "Creating elastic pool..."
$elasticPool = New-AzSqlElasticPool -ResourceGroupName $resourceGroupName `
    -ServerName $serverName `
    -ElasticPoolName $poolName `
    -Edition "GeneralPurpose" `
    -vCore 2 `
    -ComputeGeneration Gen5
$elasticPool

# Add single db into elastic pool
Write-host "Creating elastic pool..."
$addDatabase = Set-AzSqlDatabase -ResourceGroupName $resourceGroupName `
    -ServerName $serverName `
    -DatabaseName $databaseName `
    -ElasticPoolName $poolName
$addDatabase

# Create a secondary server in the failover region
Write-host "Creating a secondary logical server in the failover region..."
New-AzSqlServer -ResourceGroupName $resourceGroupName `
   -ServerName $drServerName `
   -Location $drLocation `
   -SqlAdministratorCredentials $(New-Object -TypeName System.Management.Automation.PSCredential `
      -ArgumentList $adminlogin, $(ConvertTo-SecureString -String $password -AsPlainText -Force))
Write-host "Secondary logical server =" $drServerName

# Create a server firewall rule that allows access from the specified IP range
Write-host "Configuring firewall for secondary logical server..."
New-AzSqlServerFirewallRule -ResourceGroupName $resourceGroupName `
   -ServerName $drServerName `
   -FirewallRuleName "AllowedIPs" -StartIpAddress $startIp -EndIpAddress $endIp
Write-host "Firewall configured" 

# Create secondary Gen5 elastic 2 vCore pool
Write-host "Creating secondary elastic pool..."
$elasticPool = New-AzSqlElasticPool -ResourceGroupName $resourceGroupName `
    -ServerName $drServerName `
    -ElasticPoolName $poolName `
    -Edition "GeneralPurpose" `
    -vCore 2 `
    -ComputeGeneration Gen5
$elasticPool


# Create a failover group between the servers
Write-host "Creating failover group..." 
New-AzSqlDatabaseFailoverGroup `
  -ResourceGroupName $resourceGroupName `
   -ServerName $serverName `
   -PartnerServerName $drServerName  `
   -FailoverGroupName $failoverGroupName `
   -FailoverPolicy Automatic `
   -GracePeriodWithDataLossHours 2
Write-host "Failover group created successfully." 

# Add elastic pool to the failover group
Write-host "Enumerating databases in elastic pool...." 
$FailoverGroup = Get-AzSqlDatabaseFailoverGroup `
                 -ResourceGroupName $resourceGroupName `
                 -ServerName $serverName `
                 -FailoverGroupName $failoverGroupName
$databases = Get-AzSqlElasticPoolDatabase `
               -ResourceGroupName $resourceGroupName `
               -ServerName $serverName `
               -ElasticPoolName $poolName
Write-host "Adding databases to failover group..." 
$failoverGroup = $failoverGroup | Add-AzSqlDatabaseToFailoverGroup `
                                  -Database $databases 
$failoverGroup

# Check role of secondary replica
Write-host "Confirming the secondary server is secondary...." 
(Get-AzSqlDatabaseFailoverGroup `
   -FailoverGroupName $failoverGroupName `
   -ResourceGroupName $resourceGroupName `
   -ServerName $drServerName).ReplicationRole

# Failover to secondary server
Write-host "Failing over failover group to the secondary..." 
Switch-AzSqlDatabaseFailoverGroup `
   -ResourceGroupName $resourceGroupName `
   -ServerName $drServerName `
   -FailoverGroupName $failoverGroupName
Write-host "Failover group failed over to" $drServerName 

# Check role of secondary replica
Write-host "Confirming the secondary server is now primary" 
(Get-AzSqlDatabaseFailoverGroup `
   -FailoverGroupName $failoverGroupName `
   -ResourceGroupName $resourceGroupName `
   -ServerName $drServerName).ReplicationRole

# Revert failover to primary server
Write-host "Failing over failover group to the primary...." 
Switch-AzSqlDatabaseFailoverGroup `
   -ResourceGroupName $resourceGroupName `
   -ServerName $serverName `
   -FailoverGroupName $failoverGroupName
Write-host "Failover group failed over to" $serverName 

# Clean up resources by removing the resource group
# Write-host "Removing resource group..."
# Remove-AzResourceGroup -ResourceGroupName $resourceGroupName
# Write-host "Resource group removed =" $resourceGroupName

清理部署

使用以下命令删除资源组及其相关的所有资源。

Remove-AzResourceGroup -ResourceGroupName $resourceGroupName

脚本说明

此脚本使用以下命令。表中的每条命令链接到特定于命令的文档。

命令	注释
New-AzResourceGroup	创建用于存储所有资源的资源组。
New-AzSqlServer	创建托管数据库和弹性池的服务器。
New-AzSqlServerFirewallRule	为服务器创建服务器级防火墙规则。
New-AzSqlDatabase	创建新数据库。
New-AzSqlElasticPool	创建弹性数据库池。
Set-AzSqlDatabase	设置数据库的属性，或将现有数据库移到弹性池中。
New-AzSqlDatabaseFailoverGroup	新建故障转移组。
Get-AzSqlDatabase	获取一个或多个数据库。
Add-AzSqlDatabaseToFailoverGroup	将一个或多个数据库添加到故障转移组。
Get-AzSqlDatabaseFailoverGroup	获取或列出数据库故障转移组。
Switch-AzSqlDatabaseFailoverGroup	执行数据库故障转移组的故障转移。
Remove-AzResourceGroup	删除资源组

后续步骤

有关 Azure PowerShell 的详细信息，请参阅 Azure PowerShell 文档。

可以在 Azure SQL 数据库 PowerShell 脚本中找到更多 SQL 数据库 PowerShell 脚本示例。

使用 PowerShell 将弹性池添加到故障转移组

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示例脚本

清理部署

脚本说明

后续步骤