使用 PowerShell 将弹性池添加到故障转移组Use PowerShell to add an elastic pool to a failover group

09/14/2020

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。This Azure PowerShell script example creates a database in Azure SQL Database, adds it to an elastic pool, creates a failover group, and tests failover.

如果没有 Azure 试用版订阅，请在开始前创建一个试用版订阅。If you don't have an Azure trail subscription, create a trial subscription before you begin.

备注

本文已经过更新，以便使用 Azure Az PowerShell 模块。This article has been updated to use the Azure Az PowerShell module. 若要与 Azure 交互，建议使用的 PowerShell 模块是 Az PowerShell 模块。The Az PowerShell module is the recommended PowerShell module for interacting with Azure. 若要开始使用 Az PowerShell 模块，请参阅安装 Azure PowerShell。To get started with the Az PowerShell module, see Install 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。To learn how to migrate to the Az PowerShell module, see Migrate Azure PowerShell from AzureRM to Az.

本教程需要 Az PowerShell 1.4.0 或更高版本。This tutorial requires Az PowerShell 1.4.0 or later. 如果需要进行升级，请参阅 Install Azure PowerShell module（安装 Azure PowerShell 模块）。If you need to upgrade, see Install Azure PowerShell module. 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。If you are running PowerShell locally, you also need to run Connect-AzAccount -Environment AzureChinaCloud to create a connection with Azure.

示例脚本Sample scripts

# 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Clean up deployment

使用以下命令删除资源组及其相关的所有资源。Use the following command to remove the resource group and all resources associated with it.

Remove-AzResourceGroup -ResourceGroupName $resourceGroupName

脚本说明Script explanation

此脚本使用以下命令。This script uses the following commands. 表中的每条命令链接到特定于命令的文档。Each command in the table links to command-specific documentation.

命令Command	注释Notes
New-AzResourceGroupNew-AzResourceGroup	创建用于存储所有资源的资源组。Creates a resource group in which all resources are stored.
New-AzSqlServerNew-AzSqlServer	创建托管数据库和弹性池的服务器。Creates a server that hosts databases and elastic pools.
New-AzSqlServerFirewallRuleNew-AzSqlServerFirewallRule	为服务器创建服务器级防火墙规则。Creates a server-level firewall rule for a server.
New-AzSqlDatabaseNew-AzSqlDatabase	新建数据库。Creates a new database.
New-AzSqlElasticPoolNew-AzSqlElasticPool	创建弹性数据库池。Creates an elastic database pool.
Set-AzSqlDatabaseSet-AzSqlDatabase	设置数据库的属性，或将现有数据库移到弹性池中。Sets properties for a database, or moves an existing database into an elastic pool.
New-AzSqlDatabaseFailoverGroupNew-AzSqlDatabaseFailoverGroup	新建故障转移组。Creates a new failover group.
Get-AzSqlDatabaseGet-AzSqlDatabase	获取一个或多个数据库。Gets one or more databases.
Add-AzSqlDatabaseToFailoverGroupAdd-AzSqlDatabaseToFailoverGroup	将一个或多个数据库添加到故障转移组。Adds one or more databases to a failover group.
Get-AzSqlDatabaseFailoverGroupGet-AzSqlDatabaseFailoverGroup	获取或列出数据库故障转移组。Gets or lists database failover groups.
Switch-AzSqlDatabaseFailoverGroupSwitch-AzSqlDatabaseFailoverGroup	执行数据库故障转移组的故障转移。Executes a failover of a database failover group.
Remove-AzResourceGroupRemove-AzResourceGroup	删除资源组Removes a resource group

后续步骤Next steps

有关 Azure PowerShell 的详细信息，请参阅 Azure PowerShell 文档。For more information on the Azure PowerShell, see Azure PowerShell documentation.

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。Additional SQL Database PowerShell script samples can be found in the Azure SQL Database PowerShell scripts.