update DNS on all dell iDRAC servers

We had to automate the updation of DNS servers on all of our Dell iDRACs on VxRack. Here is a script which will help you if you ever face a similar situation.

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<# .SYNOPSIS set DNS on dell iDRAC servers .DESCRIPTION opens up a csv file. put the ip addresses of idrac, root username, password, dns1, dns2 .NOTES File Name : idracSetDns.ps1 Author : gajendra d ambi Date : Dec 2017 Prerequisite : PowerShell v4+, Dell OpenManage DRAC Tools, includes Racadm (64bit) v8.1 or higher Copyright - None .LINK Script posted over: github.com/MrAmbiG/ #> #Start of Script Write-Host " A CSV file will be opened (open in excel/spreadsheet) populate the values, save & close the file, Hit Enter to proceed " -ForegroundColor Blue -BackgroundColor White $csv = "$PSScriptRoot/idracSetDns.csv" get-process | Select-Object idrac_ip_address, root_password, dns1, dns2| Export-Csv -Path $csv -Encoding ASCII -NoTypeInformation Start-Process $csv Read-Host "Hit Enter/Return to proceed" Write-Host "processing your entries from the csv file...." $csv = Import-Csv $csv foreach ($line in $csv) { $idrac_ip_address = $($line.idrac_ip_address) $root_password = $($line.root_password) $dns1 = $($line.dns1) $dns2 = $($line.dns2) $user = 'root' Write-Host "setting on $idrac_ip_address" # setting dhcp to 0 and dns1 if ($dns1.Length -gt 2) { Write-Host Disabling dhcp dns on $server -ForegroundColor Yellow racadm -r $idrac_ip_address -u $user -p $root_password --nocertwarn config -g cfgLanNetworking -o cfgDNSDomainNameFromDHCP 0 Write-Host setting dns server1 $dns1 -ForegroundColor Green racadm -r $idrac_ip_address -u $user -p $root_password --nocertwarn config -g cfgLanNetworking -o cfgDNSServer1 $dns1 } # setting dns2 if ($dns2.Length -gt 2) { Write-Host setting dns server1 $dns2 -ForegroundColor Green racadm -r $idrac_ip_address -u $user -p $root_password --nocertwarn config -g cfgLanNetworking -o cfgDNSServer2 $dns2 } }