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Accepted
Don Branson
Asked: 2016-12-03 07:19:34 +0800 CST

Is there a way in Azure to automate the creation of an authorized_keys file with multiple keys?

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Our team is using Azure PowerShell to create and initialize Linux VMs. I'm not at all familiar with Azure, but trying to help someone else set this up. Is there a way to provide a custom authorized_keys file and have Azure PowerShell drop it in ~/.ssh? We want this to occur automatically upon creation.

linux powershell azure

1 Answers

  1. Best Answer

    As @modo has mentioned in comment, you are able to use "custom script extension" to achieve this goal.

    If you are using ARM VM:

    $RGName = '<resource-group-name>'
$VmName = '<vm-name>'
$Location = '<location>'

$ExtensionName = 'CustomScriptForLinux'
$Publisher = 'Microsoft.OSTCExtensions'
$Version = '<version>'

$PublicConf = '{
    "fileUris": ["<url>"],
    "commandToExecute": "<command>"
}'
$PrivateConf = '{
    "storageAccountName": "<storage-account-name>",
    "storageAccountKey": "<storage-account-key>"
}'

Set-AzureRmVMExtension -ResourceGroupName $RGName -VMName $VmName -Location $Location `
  -Name $ExtensionName -Publisher $Publisher `
  -ExtensionType $ExtensionName -TypeHandlerVersion $Version `
  -Settingstring $PublicConf -ProtectedSettingString $PrivateConf

    If you are using ASM VM:

    $VmName = '<vm-name>'
$vm = Get-AzureVM -ServiceName $VmName -Name $VmName

$ExtensionName = 'CustomScriptForLinux'
$Publisher = 'Microsoft.OSTCExtensions'
$Version = '<version>'

$PublicConf = '{
    "fileUris": ["<url>"],
    "commandToExecute": "<command>"
}'
$PrivateConf = '{
    "storageAccountName": "<storage-account-name>",
    "storageAccountKey": "<storage-account-key>"
}'

Set-AzureVMExtension -ExtensionName $ExtensionName -VM $vm `
  -Publisher $Publisher -Version $Version `
  -PrivateConfiguration $PrivateConf -PublicConfiguration $PublicConf |
  Update-AzureVM
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