Category Archives: Azure Resource Manager

Domain Join Error | JsonADDomainExtension in ARM

Recently I have been working on an ARM template to create a Windows Server 2012 R2 VM from a managed disk image and join it to a Windows domain. I used a VM extension called JsonADDomainExtension to perform the domain join task. However my first 3 attempts were in vain as the VM was not added to the domain and I see an error in the extension deployment.

I examined the ADDomainExtension log file which is available at C:\WindowsAzure\Logs\Plugins\Microsoft.Compute.JsonADDomainExtension\1.0\ADDomainExtension.log and noticed below error.

2017-07-31T05:04:47.0833850Z [Info]: Joining Domain ''

2017-07-31T05:04:47.0833850Z [Info]: Joining Domain ''

2017-07-31T05:04:47.0833850Z [Info]: Get Domain/Workgroup Information

2017-07-31T05:04:48.0521988Z [Info]: Current domain:  (), current workgroup: WORKGROUP, IsDomainJoin: True, Target Domain/Workgroup:

2017-07-31T05:04:48.0521988Z [Info]: Domain Join Path.

2017-07-31T05:04:48.0521988Z [Info]: Current Domain 
name is empty/null. Try to get Local domain name.

2017-07-31T05:04:48.0521988Z [Info]: In AD Domain extension process, the local domain is: ''.

2017-07-31T05:04:48.0521988Z [Info]: Domain Join will be performed.

2017-07-31T05:05:06.1756824Z [Error]: Try join: domain='', ou='OU=Test Objects,DC=child,DC=abc,DC=net', user='abc\SVC_Azure_Srv_Joindom', option='NetSetupJoinDomain, NetSetupAcctCreate' (#3:User Specified), errCode='1326'.

2017-07-31T05:05:15.4067523Z [Error]: Try join: domain='', ou='OU=Test Objects,DC=child,DC=abc,DC=net', user='abc\SVC_Azure_Srv_Joindom', option='NetSetupJoinDomain' (#1:User Specified without NetSetupAcctCreate), errCode='1326'.

2017-07-31T05:05:15.4223371Z [Error]: Computer failed to join domain '' from workgroup 'WORKGROUP'.

2017-07-31T05:05:15.4223371Z [Info]: Retrying action after 3 seconds, at attempt 1 out of '3'.

The NetSetup.log available at %windir%\debug\netsetup.log reports below error.

07/31/2017 05:05:14:253 NetpProvisionComputerAccount:

07/31/2017 05:05:14:253 NetpProvisionComputerAccount:

07/31/2017 05:05:14:253 lpDomain:

07/31/2017 05:05:14:253 lpHostName: AUETARMVM01

07/31/2017 05:05:14:253 lpMachineAccountOU: OU=Test Objects,DC=child,DC=abc,DC=net

07/31/2017 05:05:14:253 lpDcName:

07/31/2017 05:05:14:253 lpMachinePassword: (null)

07/31/2017 05:05:14:253 lpAccount: orica\SVC_Azure_Srv_Joindom

07/31/2017 05:05:14:253 lpPassword: (non-null)

07/31/2017 05:05:14:253 dwJoinOptions: 0x1

07/31/2017 05:05:14:253 dwOptions: 0x40000003

07/31/2017 05:05:15:406 NetpLdapBind: ldap_bind failed on 49: Invalid Credentials

07/31/2017 05:05:15:406 NetpJoinCreatePackagePart: status:0x52e.
07/31/2017 05:05:15:406 NetpAddProvisioningPackagePart: status:0x52e.
07/31/2017 05:05:15:406 NetpJoinDomainOnDs: Function exits with status of: 0x52e
07/31/2017 05:05:15:406 NetpJoinDomainOnDs: status of disconnecting from '\\': 0x0
07/31/2017 05:05:15:406 NetpResetIDNEncoding: DnsDisableIdnEncoding(RESETALL) on '' returned 0x0
07/31/2017 05:05:15:406 NetpJoinDomainOnDs: NetpResetIDNEncoding on '': 0x0
07/31/2017 05:05:15:406 NetpDoDomainJoin: status: 0x52e
07/31/2017 05:05:18:432 -----------------------------------------------------------------

The issue was obvious after that. The service account used for domain join was incorrect. It should have been corrected as\SVC_Azure_Srv_Joindom Once this was corrected I was able to re-deploy the arm template without any issue and the join domain operation was successful.

If you want know more about how to leverage the “JsonADDomainExtension” in your ARM template, following article provides an excellent overview.

Azure ARM: VM Domain Join to Active Directory Domain with “JoinDomain” Extension



Locking Resources with ARM

Sometimes you need to restrict access to an Azure subscription, resource group or a resource in order to prevent accidental deletion or modification of same by other users. With Azure resource Manager you can lock your resources in two levels.

  • CanNotDelete Authorized users can read and modify a resource, but they can’t delete it.
  • ReadOnly Authorized users can read from a resource, but they can’t delete it or perform any actions on it. The permission on the resource is restricted to the Reader role.

The ReadOnly lock be trick in certain situations. For an example a ReadOnly lock placed in a storage account  prevents all users from listing the keys as the list keys operation is handled through a POST request since the  returned keys are available for write operations. When you apply a lock at a parent, all child resources inherit the same lock. For an example if you apply a lock in a resource group all the resources in it will inherit same and even resources you add later will inherit same.

Locking with PowerShell

Following snippet demonstrates how you can apply a resource lock using PowerShell.

New-AzureRmResourceLock –LockLevel <either CanNotDelete or ReadOnly> –LockName <Lock Name> –ResourceName <resource name> –ResourceType <resource type> –ResourceGroupName <resource group name>

Here you should provide the exact resource type. For a complete list for available Azure resource providers please refer this article.

Azure Resource Policies | Part 2

In my last post we discussed what Azure Resource Policies are and how it can help you to better manage your Azure deployments. Now it’s time to understand how to practically implement and use resource policies in Azure.

Control Virtual Machines sku in a resource group

In this example we are denying the creating VMs other than Standard A1 sku in a resource group by applying a custom resource policy.

First we create a resource group to apply this policy.

$ResourceGroup = New-AzureRmResourceGroup -Name protectedrg -Location “South East Asia”

Next we are going to define our security policy. This policy allows only Standard A1 VMs to be created when applied to a resource group.

$PolicyDefinition = New-AzureRmPolicyDefinition –Name vmLockPolicy -DisplayName vmLockPolicy -Description “Do not allow the creation of Virtual Machines” -Policy ‘{
“if”: {
“allOf”: [
“field”: “type”,
“equals”: “Microsoft.Compute/virtualMachines”
“not”: {
“field”: “Microsoft.Compute/virtualMachines/”,
“in”: [ “Standard_A1” ]
“then”: {
“effect”: “deny”

Next we are going to assign the policy to our newly created resource group. First we are retrieving the subscription name and resource group name to which the custom policy to be assigned.

$Subscription = Get-AzureRmSubscription -SubscriptionName “MVP Personal”
$ResourceGroupName = $ResourceGroup.ResourceGroupName

Now we can assign the policy accordingly.

$AssignPolicy = New-AzureRmPolicyAssignment -Name vmLockPolicyAssignment -PolicyDefinition $PolicyDefinition -Scope /subscriptions/$Subscription/resourceGroups/$ResourceGroupName

Let’s try to create a virtual machine of DS1 v2 sku in the protectedrg resource group as below.

arm-policy-vm-creation-1 However the deployment activity fails as per our custom resource policy.


In the next post let’s discuss resource locking in Azure.

SQL RP Installation Failure in Azure Stack TP1 | Fix It

Myself & my good friend CDM MVP Nirmal Thewarathanthri have been experimenting with Azure Stack for a while now. Although we tried more than 30 times to install SQL Resource Provider in our Azure Stack lab it was never quite successful. The biggest problem is cleaning up the Azure Stack environment every time after a failure as sometimes we had to do a fresh install from scratch.

The Epic Failure

Following were the symptoms of this issue.

  • The SQL VM installs just fine.
  • Deployment always fails at DSC configuration in the SQL VM.
  • The URL of the ARM template for SQL VM seems no longer valid as you can see.

Here is the full description of the error that we encountered.

VERBOSE: 8:54:27 AM – Resource Microsoft.Compute/virtualMachines/extensions ‘sqlrp/InstallSqlServer’ provisioning
status is running
New-AzureRmResourceGroupDeployment : 10:29:12 AM – Resource Microsoft.Compute/virtualMachines/extensions
‘sqlrp/InstallSqlServer’ failed with message ‘The resource operation completed with terminal provisioning state
At D:\SQLRP\AzureStack.SqlRP.Deployment.\Content\Deployment\SqlRPTemplateDeployment.ps1:207 char:5
+     New-AzureRmResourceGroupDeployment -Name “newSqlRPTemplateDeploym …
+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [New-AzureRmResourceGroupDeployment], Exception
    + FullyQualifiedErrorId : Microsoft.Azure.Commands.Resources.NewAzureResourceGroupDeploymentCommand

New-AzureRmResourceGroupDeployment : 10:29:12 AM – An internal execution error occurred.
At D:\SQLRP\AzureStack.SqlRP.Deployment.\Content\Deployment\SqlRPTemplateDeployment.ps1:207 char:5
+     New-AzureRmResourceGroupDeployment -Name “newSqlRPTemplateDeploym …
+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [New-AzureRmResourceGroupDeployment], Exception
    + FullyQualifiedErrorId : Microsoft.Azure.Commands.Resources.NewAzureResourceGroupDeploymentCommand

The issue in this case was the unstable Internet connection we had. The ARM template for SQL RP downloads the SQL 2014 ISO first. In our case timeout in the download has stopped the entire process. Once the VM was created SLQ Server 2014 wasn’t installed in it.

To solve this issue we followed below procedure in a fresh installation of MAS TP1. You can try this out in an existing installation with failed SQL RP deployment but there’s no guarantee that you will be able to cleanup the existing resource group. If you have executed the SQL RP installation only once clean up may work but if you have tried it multiple times there’s a high chance of failing to cleanup the existing resource group/s.

  1. Download the SQL image from here.
  2. Open the default PIR image. This is available in the MAS TP1 host  \\sofs\Share\CRP\PlatformImage\WindowsServer2012R2DatacenterEval\WindowsServer2012R2DatacenterEval.vhd
  3. Once you mount the VHD (simply double click to mount), create new Folder called  SQL2014 on the PIR image under C:\ drive
  4. Copy all files from the downloaded ISO into the folder SQL2014
  5. Start the deployment script. If you are trying this on an existing failed deployment, then  re-run the deployment after cleaning up the existing resource group/s for SQL RP.

Once all the deployment tasks are completed you can see a successfully deployed SQL Resource Provider in the portal as below.

SQL RP Success (1)

You can refer the MSFT guide on how to add a SQL resource provider in MAS TP1 deployment here for more information.

Azure Resource Policies | Part 1

Any data center should adhere to certain organizational compliance policies whether it is on-premises or cloud. If your organization is using Microsoft Azure and want your resources to adhere resource conventions and standards that govern the data center policy of your organization how would you do that? For an example you want to restrict person A to not to create VMs larger than Standard A2.  The answer would be to leverage custom resource policies and assigning them at the desired level, be it a subscription, resource group or an individual resource.

Is it same as RBAC?

No it isn’t. Role Based Access Controls in Azure is about actions a user or a group can perform while policies are about actions that can be applied at a resource level.  As an example RBAC sets different access levels in different scopes while policies can control what type of resources that can be provisioned or which locations those resources can be provisioned in an resource group/subscription. These two work together as in order to use a policy a user should be authenticated through RBAC.

Why do we need custom policies?

Imagine that you need to calculate chargeback for your Azure resources by team or department. Certain departments will need to have a limited consumption imposed and you need to charge the proper business unit at the end. Also if your organization wants to restrict what resource or where they are provisioned in Azure. For an example you want to impose a policy that allows user to create Standard A2 VMs only in West Europe region. Another good example is that you want to restrict creating load balancers in Azure for all the teams except the network team.

Policy Structure

As all ARM artifacts policies are also written in JSON format which contains a control structure. You need to specify a condition and what to perform when that condition is met simply like an IF THEN ELSE statement. There are two key components in a custom Azure resource policy.

Condition/Logical operators which contains a set of conditions which can be manipulated through a set of logical operators.

Effect which describes the action that will be performed when the condition is satisfied, either deny, append or audit.  If you create an audit effect it will trigger a warning event service log. As an example your policy can trigger an audit if someone creates a VM larger than Standard A2.

  • Deny generates an event in the audit log and fails the request
  • Audit generates an event in audit log but does not fail the request
  • Append adds the defined set of fields to the request

Following is the simple syntax for creating an Azure Resource policy.

“if” : {
<condition> | <logical operator>
“then” : {
“effect” : “deny | audit | append”

Evaluating policies

A policy will be evaluated at the time of resource creation or when a template deployment happens using a HTTP PUT request. If you are deploying a template, it will be evaluated during the creation of each resource in the template.

In the next post let’s discuss some practical use cases of using Azure resource policies to regulate your resources.

Exporting your Azure Resource Groups to ARM Templates | Part 2

In my previous post I showed you how we can export Azure resource groups into ARM templates using the Azure Portal. For those of us who are not GUI fans (including myself) Azure PowerShell and Azure CLI provide cmdlets/commands to leverage the export feature for cloning, redeploying and automating Azure resource group deployments.

Azure PowerShell

With the latest Azure PowerShell you can execute below cmdlet to export a running resource group to an ARM template.

Export-AzureRmResourceGroup -ResourceGroupName <RG name> -Path <template path>

To export resource groups from a previous deployment you may use the below cmdlet syntax.

Save-AzureRmResourceGroupDeploymentTemplate -DeploymentName <Deployment Name> -ResourceGroupName <RG Name>-Path <template path>

Azure CLI

You can use the following syntax to export a running resource group to an ARM template.

azure group export <name> [template path]

Use below command syntax to export to an ARM template from a previously deployed Resource Group

group deployment template download [options] <resource-group> <name> [directory]


Exporting your Azure Resource Groups to ARM Templates | Part 1

Have you ever wanted to clone your resource group  deployment in Azure to another subscription or perhaps redeploy again without manual interaction with GUI? Now you can export your resource groups as ARM templates and redeploy wherever you want without having further barriers. Let’s explore how to use this feature in Azure.

Export from an existing Resource Group Deployment

When you select a resource group you can see the Export Template option in Settings.

Export RG to ARM (1)

Export RG to ARM (1)

Export from a previous deployment

In your resource group select the particular deployment slot and you will have the option to export that particular slot with parameters submitted for that specific instance of deployment.

Export RG to ARM (5)

Saving and Redeploying to a new resource group

Alternatively you have the option to Save the template and it will be saved under Browse > Templates in the Azure Portal.

Export RG to ARM (6)

Export RG to ARM (4)

Selecting the Deploy button will allow you to start a new deployment.

Export RG to ARM (3)

Keep in mind that currently not all the resource types are supported in with export feature. For an example you may encounter failure s when you try to export resources such as WebApps, Service Bus, Stream Analytics etc… Following is such an error which happened when we tried to export a resource group with Service Bus resources.

The schema of resource type ‘Microsoft.ServiceBus/namespaces’ is not available. Resources of this type will not be exported to the template. (Code: ResourceTypeSchemaNotFound)

This has been reported to Microsoft and this post will be updated once Microsoft provide a list of supported resource types/add more and more supported resource types to this feature. Right now I can confirm that IaaS resources are fully supported in this feature.

In this next post let’s see how we can leverage Azure PowerShell or Azure CLI to export resource groups into ARM templates.