Simpline BlogWindows上のディスクとAWS上のボリュームの紐付けの話

こんにちは　t2.micro　です。

今日はAWSのWindowsサーバでイライラした話を書きます。

特定のDiskに対するAWS側の操作を自動化する必要があり
対象のDiskのVolumeIDを調べていたところ、
「OS上で見えるディスク」と
「aws management console上のボリューム」の
紐付けがわからない。

調べてみたところ、amazonのオフィシャルページがありました。

さて、どうやって確認するのか？
参考URL

①GUIから目視
「Target ID 2」番号に対する表は上記参考URLを確認

ボリュームが多くなればなるほど面倒くさい！
はい、消えたー。やりたくないー。

②powershellで確認

# List the Windows disks

# Create a hash table that maps each device to a SCSI target
$Map = @{"0" = '/dev/sda1'}
for($x = 1; $x -le 26; $x++) {$Map.add($x.ToString(), [String]::Format("xvd{0}",[char](97 + $x)))}
for($x = 78; $x -le 102; $x++) {$Map.add($x.ToString(), [String]::Format("xvdc{0}",[char](19 + $x)))}

Try {
# Use the metadata service to discover which instance the script is running on
$InstanceId = (Invoke-WebRequest '169.254.169.254/latest/meta-data/instance-id').Content
$AZ = (Invoke-WebRequest '169.254.169.254/latest/meta-data/placement/availability-zone').Content
$Region = $AZ.Substring(0, $AZ.Length -1)

#Get the volumes attached to this instance
$BlockDeviceMappings = (Get-EC2Instance -Region $Region -Instance $InstanceId).Instances.BlockDeviceMappings
}
Catch
{
Write-Host "Could not access the AWS API, therefore, VolumeId is not available.
Verify that you provided your access keys." -ForegroundColor Yellow
}

Get-WmiObject -Class Win32_DiskDrive | % {
$Drive = $_
# Find the partitions for this drive
Get-WmiObject -Class Win32_DiskDriveToDiskPartition | Where-Object {$_.Antecedent -eq $Drive.Path.Path} | %{
$D2P = $_
# Get details about each partition
$Partition = Get-WmiObject -Class Win32_DiskPartition | Where-Object {$_.Path.Path -eq $D2P.Dependent}
# Find the drive that this partition is linked to
$Disk = Get-WmiObject -Class Win32_LogicalDiskToPartition | Where-Object {$_.Antecedent -in $D2P.Dependent} | %{
$L2P = $_
#Get the drive letter for this partition, if there is one
Get-WmiObject -Class Win32_LogicalDisk | Where-Object {$_.Path.Path -in $L2P.Dependent}
}
$BlockDeviceMapping = $BlockDeviceMappings | Where-Object {$_.DeviceName -eq $Map[$Drive.SCSITargetId.ToString()]}

# Display the information in a table
 New-Object PSObject -Property @{
 Device = $Map[$Drive.SCSITargetId.ToString()];
 Disk = [Int]::Parse($Partition.Name.Split(",")[0].Replace("Disk #",""));
 Boot = $Partition.BootPartition;
 Partition = [Int]::Parse($Partition.Name.Split(",")[1].Replace(" Partition #",""));
 SCSITarget = $Drive.SCSITargetId;
 DriveLetter = If($Disk -eq $NULL) {"NA"} else {$Disk.DeviceID};
 VolumeName = If($Disk -eq $NULL) {"NA"} else {$Disk.VolumeName};
 VolumeId = If($BlockDeviceMapping -eq $NULL) {"NA"} else {$BlockDeviceMapping.Ebs.VolumeId}
 }
 }
 } | Sort-Object Disk, Partition | Format-Table -AutoSize -Property Disk, Partition, SCSITarget, DriveLetter, Boot,
 VolumeId, Device, VolumeName

うごかないし、赤字が怖いし。
powershellとか触ったことないし。
なんで怒られているのか。powershell怖いよ。

＞Disk = [Int]::Parse($Partition.Name.Split(“,”)[0].Replace(“Disk #”,””));

＞Partition = [Int]::Parse($Partition.Name.Split(“,”)[1].Replace(” Partition #”,””));

上の2行が怒られている。
よく読むと、日本語OSだと　「Disk　が　ディスク」、「Partition　が　パーティション」となっているから怒っているらしい。
そんなことで怒らないでおくれよ。赤文字とか、びっくりするよ。

ダサいけど、ひとまずReplaceを2回することで日本語、英語ともに対応できるはず。

# List the Windows disks

# Create a hash table that maps each device to a SCSI target
$Map = @{"0" = '/dev/sda1'}
for($x = 1; $x -le 26; $x++) {$Map.add($x.ToString(), [String]::Format("xvd{0}",[char](97 + $x)))}
for($x = 78; $x -le 102; $x++) {$Map.add($x.ToString(), [String]::Format("xvdc{0}",[char](19 + $x)))}

Try {
# Use the metadata service to discover which instance the script is running on
$InstanceId = (Invoke-WebRequest '169.254.169.254/latest/meta-data/instance-id').Content
$AZ = (Invoke-WebRequest '169.254.169.254/latest/meta-data/placement/availability-zone').Content
$Region = $AZ.Substring(0, $AZ.Length -1)

#Get the volumes attached to this instance
$BlockDeviceMappings = (Get-EC2Instance -Region $Region -Instance $InstanceId).Instances.BlockDeviceMappings
}
Catch
{
Write-Host "Could not access the AWS API, therefore, VolumeId is not available.
Verify that you provided your access keys." -ForegroundColor Yellow
}

Get-WmiObject -Class Win32_DiskDrive | % {
$Drive = $_
# Find the partitions for this drive
Get-WmiObject -Class Win32_DiskDriveToDiskPartition | Where-Object {$_.Antecedent -eq $Drive.Path.Path} | %{
$D2P = $_
# Get details about each partition
$Partition = Get-WmiObject -Class Win32_DiskPartition | Where-Object {$_.Path.Path -eq $D2P.Dependent}
# Find the drive that this partition is linked to
$Disk = Get-WmiObject -Class Win32_LogicalDiskToPartition | Where-Object {$_.Antecedent -in $D2P.Dependent} | %{
$L2P = $_
#Get the drive letter for this partition, if there is one
Get-WmiObject -Class Win32_LogicalDisk | Where-Object {$_.Path.Path -in $L2P.Dependent}
}
$BlockDeviceMapping = $BlockDeviceMappings | Where-Object {$_.DeviceName -eq $Map[$Drive.SCSITargetId.ToString()]}

# Display the information in a table
New-Object PSObject -Property @{
Device = $Map[$Drive.SCSITargetId.ToString()];
Disk = [Int]::Parse($Partition.Name.Split(",")[0].Replace("Disk #","").Replace("ディスク #",""));
Boot = $Partition.BootPartition;
Partition = [Int]::Parse($Partition.Name.Split(",")[1].Replace(" Partition #","").Replace(" パーティション #",""));
SCSITarget = $Drive.SCSITargetId;
DriveLetter = If($Disk -eq $NULL) {"NA"} else {$Disk.DeviceID};
VolumeName = If($Disk -eq $NULL) {"NA"} else {$Disk.VolumeName};
VolumeId = If($BlockDeviceMapping -eq $NULL) {"NA"} else {$BlockDeviceMapping.Ebs.VolumeId}
}
}
} | Sort-Object Disk, Partition | Format-Table -AutoSize -Property Disk, Partition, SCSITarget, DriveLetter, Boot,
VolumeId, Device, VolumeName

とりあえず日本語OSでは動きました。
ホントにちょっとしたことでした。