Windows 检查DNS以查看记录是否存在

我正在尝试创建PowerShell脚本以执行以下操作：

打开我的CSV文件。列A具有服务器的主机名。B列有IP地址

然后我想看看DNS中是否存在主机名。我检查第一个主机名，如果该主机存在，则转到下一个主机名。如果没有，则使用主机名和ip将新A记录添加到DNS中

我的问题是，当它检查该记录是否存在于DNS中时，它会说该记录不存在，然后尝试创建它，而事实上它确实存在于DNS中。 这是我的剧本：

# Declare Variables. These variables are different in each domain
$ZoneName = "domain.com"
$DNSServer = "domain1.domain.com"
$ExistsInDNS = "C:\myScripts\DNSScavenging\RestoreDNSRecords\ExistsInDNS.txt"
$RestoredToDNS = "C:\myScripts\DNSScavenging\RestoreDNSRecords\RestoredToDNS.txt"

$DNSRecords = Import-Csv -path "C:\myScripts\DNSScavenging\RestoreDNSRecords\dnsrestoretest.csv" -Header "Server","IP"  

foreach ($DNSRecord in $DNSRecords){

    # Check DNS to see if the Server and IP exists
    write-host "Checking to see if $($DNSRecord.Server) exists in DNS"
    $DNSCheck = [System.Net.DNS]::GetHostByName($DNSRecord.Server)                   
    if ($($DNSCheck.HostName) -contains $($DNSRecord.Server)) {         
        write-host "$($DNSRecord.Server) $($DNSRecord.IP) exists in DNS" -ForegroundColor "Green" 
        write-output "$($DNSRecord.Server) $($DNSRecord.IP)" | out-file $ExistsInDNS -Append
    } else { 
        write-host "$($DNSRecord.Server) $($DNSRecord.IP) does not exist in DNS.  Restoring $($DNSRecord.Server) $($DNSRecord.IP) in DNS" -ForegroundColor "Yellow"
        write-output "$($DNSRecord.Server) $($DNSRecord.IP)"  | out-file $RestoredToDNS -Append
        # Add record into DNS   
        Add-DnsServerResourceRecordA -ComputerName $DNSServer -ZoneName "$ZoneName" -Name $DNSRecord.Server -AllowUpdateAny -IPv4Address $DNSRecord.IP
    }
}

我建议您使用：

解析DnsName-名称“DNSEntry”-服务器“yourserver”

通过这种方式，您可以直接检查目标dns服务器，只需检查它是否返回true。

我建议您使用：

解析DnsName-名称“DNSEntry”-服务器“yourserver”

---

通过这种方式，您可以直接检查您的目标dns服务器，您只需检查它是否返回true。

对于其他偶然发现此问题的人，我将为您节省几个小时的时间。如下所示格式化.csv，包括标题，但在本例中不使用fqdn，只使用主机名

name,ip
testnameexample,192.168.1.1

并使用此代码：

#Declare Variables. These variables are different in each domain
$ZoneName = "yourdomain.com"
#$DNSServer = "yourdnsserver.yourdomain.com"
$ExistsInDNS = "C:\temp\ExistsInDNS.txt"
$RestoredToDNS = "C:\temp\AddedToDNS.txt"

$DNSRecords = Import-Csv -path "C:\temp\IP_LIST.csv" -Header "name","ip"  

foreach ($DNSRecord in $DNSRecords){

    # Check DNS to see if the Server and IP exists
    write-host "Checking to see if $($DNSRecord.name) exists in DNS"          
    $DNSCheck = $(resolve-DnsName -name "$($DNSRecord.name).$ZoneName" -erroraction 'silentlycontinue' | select-object Name)
    write-host "DNS Lookup Result [blank if not found]: $($DNSCheck.Name)"
    if ($($DNSCheck.Name) -match $($DNSRecord.name)) {         
        write-host "$($DNSRecord.name) $($DNSRecord.ip) exists in DNS, Skipping.." -ForegroundColor "Green" 
        write-output "$($DNSRecord.name) $($DNSRecord.ip)" | out-file $ExistsInDNS -Append
    } else { 
        write-host "$($DNSRecord.name) $($DNSRecord.ip) does not exist in DNS.  Adding $($DNSRecord.name) $($DNSRecord.ip) in DNS" -ForegroundColor "Yellow"
        write-output "$($DNSRecord.name) $($DNSRecord.ip)"  | out-file $RestoredToDNS -Append
        # Add record into DNS   
        #Add-DnsServerResourceRecordA -ComputerName $DNSServer -ZoneName "$ZoneName" -Name $($DNSRecord.name) -AllowUpdateAny -IPv4Address $($DNSRecord.ip)
        Add-DnsServerResourceRecordA -ZoneName "$ZoneName" -Name $($DNSRecord.name) -AllowUpdateAny -IPv4Address $($DNSRecord.ip)
    }
}

---

对于其他偶然发现这个的人，我将为你节省几个小时的时间。如下所示格式化.csv，包括标题，但在本例中不使用fqdn，只使用主机名

name,ip
testnameexample,192.168.1.1

并使用此代码：

#Declare Variables. These variables are different in each domain
$ZoneName = "yourdomain.com"
#$DNSServer = "yourdnsserver.yourdomain.com"
$ExistsInDNS = "C:\temp\ExistsInDNS.txt"
$RestoredToDNS = "C:\temp\AddedToDNS.txt"

$DNSRecords = Import-Csv -path "C:\temp\IP_LIST.csv" -Header "name","ip"  

foreach ($DNSRecord in $DNSRecords){

    # Check DNS to see if the Server and IP exists
    write-host "Checking to see if $($DNSRecord.name) exists in DNS"          
    $DNSCheck = $(resolve-DnsName -name "$($DNSRecord.name).$ZoneName" -erroraction 'silentlycontinue' | select-object Name)
    write-host "DNS Lookup Result [blank if not found]: $($DNSCheck.Name)"
    if ($($DNSCheck.Name) -match $($DNSRecord.name)) {         
        write-host "$($DNSRecord.name) $($DNSRecord.ip) exists in DNS, Skipping.." -ForegroundColor "Green" 
        write-output "$($DNSRecord.name) $($DNSRecord.ip)" | out-file $ExistsInDNS -Append
    } else { 
        write-host "$($DNSRecord.name) $($DNSRecord.ip) does not exist in DNS.  Adding $($DNSRecord.name) $($DNSRecord.ip) in DNS" -ForegroundColor "Yellow"
        write-output "$($DNSRecord.name) $($DNSRecord.ip)"  | out-file $RestoredToDNS -Append
        # Add record into DNS   
        #Add-DnsServerResourceRecordA -ComputerName $DNSServer -ZoneName "$ZoneName" -Name $($DNSRecord.name) -AllowUpdateAny -IPv4Address $($DNSRecord.ip)
        Add-DnsServerResourceRecordA -ZoneName "$ZoneName" -Name $($DNSRecord.name) -AllowUpdateAny -IPv4Address $($DNSRecord.ip)
    }
}

---

这样效果更好！我使用了该cmdlet，并稍微更改了逻辑以适应它，这样效果更好！我使用了该cmdlet，并稍微更改了逻辑以适应它