如何在Linux上的可用性组副本之间同步SQL Server代理作业？

问题描述

我有两个在Linux上运行的SQL Server 2019实例。这两个实例都包含一个使用AlwaysOn可用性组同步的数据库。数据库中的数据已同步，但是问题是SQL Agent作业不是数据库本身的一部分。

因此，当我在主副本上创建SQL Server代理作业时，此配置不会复制到辅助副本。因此，在创建每个作业之后，我始终也必须转到中学并在那里创建作业。而且我必须时刻跟踪我所做的所有更改。

在使用可用性组时，是否有内置的方法可以自动在Linux上实现SQL Server作业的跨副本同步？ AG复制副本之间的作业同步似乎已经由SQL Server / SQL Server代理工具提供了本机支持，但是我从Microsoft那里找不到任何东西，只有一个名为DBA Tools的第三方工具可以用来编写我的在PowerShell中拥有自己的自动化脚本。

解决方法

dbatools可以同步它们，但是我还没有在运行Linux的AG上尝试过。让我知道它是否有效！ 第一个参数是您的AG的名称，第二个参数是您的集群的虚拟网络名称。

param($AvailabilityGroup,$SqlInstance)
    try {
        $replicas = Get-DbaAgReplica -AvailabilityGroup $AvailabilityGroup -SqlInstance $SqlInstance
        $primary = $replicas | Where-Object Role -EQ Primary | Select-Object -ExpandProperty Name
        $secondaries = $replicas | Where-Object Role -EQ Secondary | Select-Object -ExpandProperty Name
        $primaryInstanceConnection = Connect-DbaInstance $primary -ClientName 'ScriptBorrowedFromStackOverFlow'
        $secondaries | ForEach-Object {
            $secondaryInstanceConnection = Connect-DbaInstance $_ -ClientName 'ScriptBorrowedFromStackOverFlow'
            Copy-DbaAgentJob -Source $primaryInstanceConnection -Destination $secondaryInstanceConnection -Force
        }
    }
    catch {
        $msg = $_.Exception.Message
        Write-Error "Error while syncing jobs for Availability Group '$($AvailabilityGroup): $msg'"
    }

,

经过反复试验，我最终得到了可在Ubuntu Linux 18.04上运行的脚本。非常感谢Derik Hammer and his blog作为脚本的基础，也感谢DavidSöderlund的答复。

为使脚本正常工作，您将需要安装PowerShell for Linux以及DBATools和SqlCmd2 PowerShell模块。您还必须将sql凭据存储在某个文件中。我为我选择了/var/opt/mssql/secrets/creds.xml，并将访问权限更改为root。脚本可以将登录名，DBmail设置，SQL Agent类别，作业，操作员和计划从主副本同步到所有辅助副本（取消注释所需的内容，但请注意，订购事项和某些内容无法在一个连接中同步，即操作员和作业） ，如果有的话，跳过配置副本。

您可以将根目录的计划执行设置为root，并使用CRON将输出记录到文件中。要进行设置，请运行：

sudo crontab -e

并将此行添加到文件中

*/5 * * * * pwsh /<PATH>/sync-sql-objects.ps1 >> /<PATH>/sync-sql-objects.log

脚本：

<# 
.DESCRIPTION
This script will detect your Availability Group replicas and copy all of its instance level objects from primary replica to secondary replicas within the Availability Group. It will skip any configuration replicas.
 
.EXAMPLE
sudo pwsh sync-sql-objects.ps1
 
.NOTES
One limitation of this script is that it assumes you only have one availability group. This script should run on your configuration replica server.
 
.LINK
https://www.sqlhammer.com/synchronizing-server-objects-for-availability-groups/
 
DEBUG
To see logs on Ubuntu Linux,install Postfix Mail Transfer Agent and then go to see mails in /var/mail/<username>
#>  

Write-Output ("Sync started: " + (Get-Date -Format G))
 
#Error handling
$ErrorActionPreference = "stop";
 
Trap 
{
    $err = $_.Exception
    while ( $err.InnerException )
    {
 
        $err = $err.InnerException
        Write-Output $err.Message
 
    };
}
 
# Prerequisites
try
{
    Write-Output "Valiating prerequisites."

    # You need to have these modules installed in advance,otherwise the import will fail

    if ((Get-Module -Name dbatools) -eq $null)
    {
        Import-Module dbatools | Out-Null
    }

    if ((Get-Module -Name Invoke-SqlCmd2) -eq $null)
    {
        Import-Module Invoke-SqlCmd2 | Out-Null
    }

    Write-Output "Prerequisites loaded."
 
}
catch
{
    Write-Error $_.Exception.Message -EA Continue
    Write-Error "One or more of the prerequisites did not load. Review previous errors for more details." -EA Continue
    return
}

# Detect Availability Group replicas
Write-Output "Begin query for Availability Group replicas"
 
$ConfigurationMode = "CONFIGURATION_ONLY"
$Hostname = hostname 
$Credentials = Import-CliXml -Path /var/opt/mssql/secrets/creds.xml

$ReplicasQuery = @"
SELECT replica_server_name,availability_mode_desc,primary_replica
FROM sys.availability_replicas AR
INNER JOIN sys.dm_hadr_availability_group_states HAGS
INNER JOIN sys.availability_groups AG ON AG.group_id = HAGS.group_id
    ON HAGS.group_id = AR.group_id;
"@

$Replicas = Invoke-Sqlcmd2 -ServerInstance $Hostname -Query $ReplicasQuery -ConnectionTimeout 30 -Credential $Credentials
 
if(([DBNull]::Value).Equals($Replicas[0].primary_replica))
{
    Write-Error "Availability Group query returned no results. Confirm that you connected to a SQL Server instance running an Availability Group. No work was accomplished."
    return
}
 
Write-Output "Completed query of Availability Group replicas"
 
foreach($replica in $Replicas)
{
    # Skip if destination replica is primary replica itself
    if($replica.primary_replica.CompareTo($replica.replica_server_name) -eq 0)
    {
        continue
    }
 
    # Skip configuration replicas
    if($replica.availability_mode_desc.CompareTo($ConfigurationMode) -eq 0)
    {
        continue
    }

    #Connect
    $PrimaryReplica = Connect-DbaInstance $replica.primary_replica -ClientName 'ConfigurationReplica' -SqlCredential $Credentials
    $SecondaryReplica = Connect-DbaInstance $replica.replica_server_name -ClientName 'ConfigurationReplica' -SqlCredential $Credentials

    Write-Output "Copying instance objects from $sourceReplica to $replica"

    # Copy objects
    # Write-Output "Copying Logins."
    # Copy-DbaLogin -Source $PrimaryReplica -Destination $SecondaryReplica

    # Write-Output "Copying DBMail."
    # Copy-DbaDbMail -Source $PrimaryReplica -Destination $SecondaryReplica -Force

    # Write-Output "Copying Agent Categories."
    # Copy-DbaAgentJobCategory -Source $PrimaryReplica -Destination $SecondaryReplica -Force

    # Write-Output "Copying Agent Schedules."
    # Copy-DbaAgentSchedule -Source $PrimaryReplica -Destination $SecondaryReplica -Force

    # Write-Output "Copying Operators."
    # Copy-DbaAgentOperator -Source $PrimaryReplica -Destination $SecondaryReplica -Force

    Write-Output "Copying Jobs."
    Copy-DbaAgentJob -Source $PrimaryReplica -Destination $SecondaryReplica -Force
       
    Write-Output "Copy complete from $PrimaryReplica to $SecondaryReplica"
}

Write-Output "SQL Instance object sync complete."

享受！