보미네

$dbServerIpOrDomain = 'domain'
$dbServerPort = '1433'
$dbName = 'master'
$dbServerAccountId = 'id' 
$dbServerAccountPass = 'pass'

$query = 
@"
select @@servername Servername , @@version Version
; 
"@

function SqlQuery 
{
    param (
        [parameter(Mandatory=$true)]  [string] $server, 
        [parameter(Mandatory=$true)]  [string] $port,
        [parameter(Mandatory=$true)]  [string] $database, 
        [parameter(Mandatory=$true)]  [string] $id, 
        [parameter(Mandatory=$true)]  [string] $pass, 
        [parameter(Mandatory=$true)]  [string] $query,
        [parameter(Mandatory=$false)] [switch] $isRead = $false , 
        [parameter(Mandatory=$false)] [int]    $queryTimeout = 0 ,
        [parameter(Mandatory=$false)] [int]    $connTimeout = 5 ,
        [parameter(Mandatory=$false)] [string] $appName = "PowerShell"  
    ) 
    try
    {
        $substringLen = 100
        if ($query.Length -lt $substringLen)
        {
            $substringLen = $query.Length
        }
        $querySubstring = $query.substring(0, $substringLen)
        
        $conn = New-Object System.Data.SQLClient.SQLConnection
        $conn.ConnectionString = "server=$($server),$($port);database=$($database);User Id=$($id);Password=$($pass);Connect Timeout=$($connTimeout);Application Name=$($appName)"
        $conn.Open()
        $cmd = New-Object System.Data.SQLClient.SQLCommand
        $cmd.Connection = $conn
        $cmd.CommandText = $query
        $cmd.CommandTimeout=$queryTimeout
        if($isRead)
        {
            $ds=New-Object system.Data.DataSet
            $da=New-Object system.Data.SqlClient.SqlDataAdapter($cmd)
            $da.fill($ds) | Out-Null
            Write-Host ($ds.Tables | Format-Table | Out-String)
        }
        else
        {
            $cmd.ExecuteNonQuery() | Out-Null
        }
        $conn.Close()

        Write-Host "SUCCESS, SERVER : $($server), QUERY : $($querySubstring) ..."
    }
    catch 
    {
        Write-Host "FAILED, SERVER : $($server), QUERY : $($querySubstring) ..."
        throw "FAILED SERVER : $($server), ERROR MESSAGE : $($_)"
    }
}

Clear 
ipconfig /all 
Resolve-DnsName $dbServerIpOrDomain
Test-NetConnection $dbServerIpOrDomain -Port $dbServerPort
SqlQuery -server $dbServerIpOrDomain -port $dbServerPort -database $dbName -id  $dbServerAccountId -pass $dbServerAccountPass -query $query -isRead:$true

# DNS 를 조회하면 2개의 ip와 TTL 1200 이 출력된다. 
Resolve-DnsName lissql1

#PS C:\Users\dba> Resolve-DnsName lissql1
#Name                                           Type   TTL   Section    IPAddress                                
#----                                           ----   ---   -------    ---------                                
#lissql1.foo.company.local                A      1200  Answer     100.107.61.251                            
#lissql1.foo.company.local                A      1200  Answer     100.107.62.51                             



# 모듈을 불러들인다. 
Import-Module FailoverClusters  



# Network Name 을 찾는다. 
Get-ClusterResource -Cluster avconsole-clu1



# agsql1_lissql1 Network Name을 대상으로 아래 설정을 수행한다. 
Get-ClusterResource -Cluster avconsole-clu1 -Name "agsql1_lissql1" | Get-ClusterParameter
Get-ClusterResource -Cluster avconsole-clu1 -Name "agsql1_lissql1" | Set-ClusterParameter -Name RegisterAllProvidersIP 0
Get-ClusterResource -Cluster avconsole-clu1 -Name "agsql1_lissql1" | Set-ClusterParameter -Name HostRecordTTL 30



# 리소스 재시작과 클러스터 시작을 해줘야 적용된다. 
Stop-ClusterResource -Cluster avconsole-clu1 -Name "agsql1_lissql1"
Start-ClusterResource -Cluster avconsole-clu1 -Name "agsql1_lissql1"
Start-Clustergroup -Cluster avconsole-clu1 -Name "agsql1"



# 최종 확인, 아래처럼 1개의 ip와 ttl 30초로 설정 되어야 한다. 
Resolve-DnsName lissql1

#PS C:\Users\dba> Resolve-DnsName lissql1
#
#Name                                           Type   TTL   Section    IPAddress                                
#----                                           ----   ---   -------    ---------                                
#lissql1.foo.company.local                A      30    Answer     100.107.61.251      



# AG 에서 failover 해본다. (30초 기다려보고 Resolve-DnsName lissql1 응답을 확인한다.)

AD DNS 서버에서 아래값을 셋팅 한다. 기본값은 180초

*************************************************************** 

Set-DnsServerDsSetting -PollingInterval 30

Get-DnsServerDsSetting