Azure vmss custom data. Changing this forces a new resource to be created.

Azure vmss custom data customData (or any other data). Once custom metrics are published to Azure Monitor, you can browse, query, and alert on them along side the standard Azure metrics. Jul 9, 2020 · The add a task called azure cli and configure it for VMSS update by using an image. Instance count can be updated in several ways: Manually increasing or decreasing scale set capacity Based on a set schedule According to rules based on metrics thresholds Automatically based on usage patterns discovered by predictive artificial intelligence This automated and Learn how to use scale-in policies with Azure Virtual Machine Scale Sets that use autoscale configuration to manage instance count Jul 6, 2022 · This template allows you to create a Virtual Machine with User Data passed down to the VM. . Aug 28, 2020 · When using VMSS with custom data, an update of custom data currently triggers an update of the VMSS instances because the provider is sending an UpdateInstances:true in the payload. Sep 8, 2020 · Custom data is passed to the VM via the ovf-env. I. The example shows how various deployment setting options could be used to piece together an installation mechanism on Windows in Azure. The Recovery Services vault resource is available from the Settings menu of most Azure Jan 15, 2025 · While GitHub’s hosted runners are convenient, many enterprises need custom runners for specialized workloads, enhanced security, or cost optimization. INCLUDE learn-about-deployment-models] Resource Manager model. Azure Monitor custom metrics are currently in public preview. This post will show you, how to create an Azure VM using Terraform and pass custom data to the Virtual machine. Issue Running the command az vm show --resource-group <rg> --name <name> o Azure Virtual Machine Scale Sets Autoscaling with Terraform Pre-requisite: Learn VMSS Autoscaling Concept using Azure Portal Create VMSS Create Autoscaling Default Profile Percentage CPU Rule Available Memory Bytes Rule LB SYN Count Rule Create Autoscaling Recurrence Profile - Weekdays Create Autoscaling Recurrence Profile - Weekends Create Autoscaling Fixed Profile Resource: azurerm_monitor RegistryPlease enable Javascript to use this application Apr 1, 2025 · An Azure Virtual Machine Scale Set can increase or decrease the number of virtual machines that run your application. It serves as an example of using the Custom Script Extension (CSE), custom_data, IMDS and user_data together The files that are used are listed in the table below. As part of that blog post, I deployed an Azure VM and ran a script on it to deploy Active Directory Domain Services. Sep 2, 2020 · Hey guys! What is the correct way to deploy and upgrade virtual machines in the Azure Cloud using Terraform Azure Provider? I use Packer to bake an image with all required linux packages. Please let me know if my Feb 12, 2023 · Deploy an Azure Linux Virtual Machine with cloud-init config Using the az vm create command to deploy an Azure VM, you can specify the cloud-init configuration using the --custom-data flag option. Below, we declare environment variables that will be used throughout this document. However, the devs would like a custom script running to update several packages. Feb 25, 2022 · I would like to know the terraform script for provisioning azure Virtual machine scale set along with custom data or cloud init. We are trying to create a single azure vm and the custom_data does not appear to be running. From here (1) it follows that updates to custom_data won't affect existing instances. Nothing se Aug 10, 2023 · TL;DR: How to use cloud-init for Linux VMs and Azure Custom Script Extension for Windows VMs to Tagged with azure, cloudcomputing, vmss, azureservices. Oct 10, 2023 · Hi @genixtrialUser1 , Thanks for contacting Microsoft Q&A platform. Aug 22, 2024 · Learn how to use Azure PowerShell to install applications into Virtual Machine Scale Sets with the Custom Script Extension Jul 10, 2025 · Azure VM Applications provide a streamlined, scalable and secure way to package, manage, and deploy applications across Azure Virtual Machines (VMs), Virtual Machine Scale Sets (VMSS). It assumes the VMSS has been configured with Rolling Upgrades to prevent downtime. Using… Learn how to use the Azure CLI to create and use Managed Disks with Virtual Machine Scale Set. This topic describes how to: Inject data into an Azure virtual machine when May 4, 2021 · Need custom data in azure virtual machine scaleset (Windows) to install IIS server and replace the default iis page echoing hostname of the server. Then allow time for the existing agents to be deleted, then reapply the original value if desired. They allow you to automate the initial configuration and setup of VMs, ensuring that each VM starts with the required settings and scripts. Mar 21, 2025 · Azure Virtual Machine Scale Sets let you create and manage a group of load balanced virtual machines (VM) instances. API version latest Hi I have successfully set up a new Linux virtual machine scale set. By leveraging these Azure services, you can optimize the scalability and availability of your applications, ensuring they can handle varying workloads with ease. If an answer has been helpful, please consider accepting the answer to help increase visibility of this question for other members of the Microsoft Q&A community. This step is executed in the first job of Release pipeline in Azure DevOps (with Azure-provided agents). Aug 21, 2023 · This post details the process of creating a virtual machine in Azure, utilizing a PowerShell script to run commands after the VM starts up (bootstrapping) and using Terraform as the underlying deployment platform. Jul 15, 2021 · Yes, customData is part of the VMSS model -- you can update custom data / cloud init on scale sets via REST API • Existing instances need to be updated to the latest model AND reimaged to have the new cloud-init run Jun 2, 2022 · It looks like not a terraform issue but a "rolling upgrades" design by Azure. This article describes how to modify an existing scale set using the Azure CLI. 6 days ago · Azure Monitor automatically configures your Data Collection Rules (DCRs) to route these OpenTelemetry counters through the Monitor pipeline, ensuring you get full monitoring coverage with minimal configuration. For example, if your script is located in Azure Storage, you can allow access by using Azure NSG service tags for Storage. To see how to use the Azure Resource Management API, see the example template. Scale sets provide the following key benefits: Easy to create and manage multiple VMs Provides high availability and application resiliency by distributing VMs across Nov 7, 2024 · Reimaging a virtual machine in a Virtual Machine Scale Set replaces the old OS disk with a new OS disk. I will deploy a virtual machine and will Oct 3, 2024 · Azure VMSS Custom Data refresh the existing VMs using terraform. We use Oct 22, 2018 · I have a question regarding accessing custom data from a Azure Linux VM after boot up. If you're using rest API, for single VMs, add 'UserData' to the "properties" section with the PUT request to create the VM. Newer versions of the Microsoft Azure Linux Agent will also copy the base64-encoded data to /var/lib/waagent/CustomData as well for convenience. [AZURE. Make sure that all properties in the az vmss create command are the same as before, except for the properties that you wish to modify. Execution of the custom data using cloud init is only supported in Ubuntu images. We can pass scripts while launching Azure VMs. Aug 18, 2023 · Hello @Nasimjon Tohirov If you find that the az vm run-command invoke command is too slow for your needs, you can consider using a custom script extension to install Docker on the VM after it has been deployed. Mar 8, 2025 · Virtual Machine Scale Sets (VMSS) – Auto-scaling like a pro! Public OS Image vs. Azure compute resources that are used to create and manage groups of heterogeneous load-balanced virtual machines. , the new cloud-init script). x releases however is in a feature-frozen state to maintain compatibility - new functionality will instead be added to the azurerm_linux_virtual Aug 12, 2019 · I was wondering if it is possible to use Powershell as part of custom data while provisioning a VMSS on Azure, If so can someone post a few examples on how to do that? As part of the powershell scr Throughout the lifecycle of your applications, you may need to modify or update your Virtual Machine Scale Set. cloud-init configurations applied to VMs don't have time constraints and won't cause a deployment to fail by timing out. See Authoring extension templates to learn more about authoring templates for using extensions. A common approach to customize a VM on first boot is to use cloud-init. How can I send the data from my custom exporter to Azure managed Prometheus? Any guidance on how to achieve this is appreciated. Other options for storing data include: Azure Managed Disks - Premium v2, Premium, Standard, Ultra Azure Files - Server Message Block (SMB) or Network File System (NFS) shared Learn how to use Azure PowerShell to create a custom VM image that you can use to deploy a Virtual Machine Scale Set **Introduction:**Welcome to this video, where we'll be exploring one of the most powerful features in Azure Virtual Machine Scale Sets (VMSS): Custom Data re Verify and query custom metrics data After configuring the application health extension to return custom metrics, you can verify that the custom metrics are being reported correctly and query the data from your Virtual Machine Scale Set instances. Aug 22, 2024 · Use this Azure Resource Manager template to create a new VM with user data. , until the instance is manually reimaged (e. We are excited to announce we are adding additional functionality to the VMSS Flexible Orchestration preview Azure Resource Manager templates allows you to declaratively specify the Azure IaaS infrastructure in JSON language by defining the dependencies between resources. Terraform Azure provider The Terraform Azure provider is our starting point to understand what can be done when deploying Aug 22, 2024 · Learn how to use the Azure CLI to install applications into Virtual Machine Scale Sets with the Custom Script Extension Jan 3, 2021 · Run custom PowerShell script on Virtual Machine Scale Set (VMSS) and Virtual Machine (VM) Specify extension in ARM template in a few ways: as a separate resource, as a part of extensionProfile or as a child resource Use Azure Blob Storage for storing custom script and exporting logs Retrieve script file from storage account using SAS token or Managed Identity Troubleshoot extension Mar 20, 2018 · Setup A VM or VMSS that has a cloud-init config defined in virtualMachineProfile. Once the Az Linux Vmss has been created, I want to update the cloud-init script, but now az vmss update To launch a cloud-init script when creating a VM in Azure, specify the cloud-init file using the Azure CLI --custom-data switch. Starting with Microsoft Azure Diagnostics version 1. Appreciate any guidance in this regard, Apr 18, 2025 · Throughout the lifecycle of your applications, you may need to modify or update your Virtual Machine Scale Set. Nov 16, 2020 · I'm kind of new to azure so I'm probably missing something but have been looking at it for 2 days and hoping someone has an easy answer. Azure virtual machine scale sets let you create and manage a group of identical, load balanced VMs. I can make the local. Just like you cannot pick the image that goes on the VMSS; you also cannot use VM Extensions on that scale set, without being out of support. 管理 Azure 虛擬機擴展集 （VMSS） 中的虛擬機群組。 Terraform Azure Verified Resource Module for Virtual Machine Scale Set - Azure/terraform-azurerm-avm-res-compute-virtualmachinescaleset Note: The updated custom-data will only apply to newly deployed VMSS instances. Why Self-Hosted Runners? Dec 13, 2020 · The underlying Virtual Machine Scale Set (VMSS) is an implementation detail, and one that you do not get to adjust outside of SKU and disk choice. x and 3. Dec 20, 2022 · I am creating a VMSS using terraform to use for Azure Devops agent pool. You must integrate an Azure Load Balancer Jan 27, 2022 · I have a docker image, I want to run it in azure VMSS . Conflicts with dedicated_host_group_id. We are excited to announce we are adding additional functionality to the VMSS Flexible Orchestration preview Jul 29, 2023 · Hello, @sns ! Azure Image Builder or Custom Script Extension are good options. For example: Feb 8, 2025 · Learn how to deploy Custom Script Extensions on Azure VMSS for automated post-deployment setup, best practices, and troubleshooting tips. Feb 25, 2018 · I am trying to use custom_data field of resource azurerm_virtual_machine, but getting caught up into this error. May 29, 2025 · In Azure Pipelines, VMSS can host custom agents and automatically scale the number of build and deployment agents based on workload. VMs are automatically distributed across Availability Oct 23, 2024 · Troubleshoot PowerShell script failures when you run them remotely on a virtual machine by using the Custom Script Extension or Run Command feature. g. In this article we'll learn about troubleshooting some of the common VM extension failures. For example, you can create a file named Alternatively, supplying a base64 encoded value for vmss_custom_data_data, which overrides the vmss_custom_data_script variable. Flexible orchestration provides a unified experience across the Azure VM ecosystem while offering enhanced availability guarantees (up to 1,000 VMs). I am currently using the Azure GO SDK to programmatically create VMs which are based on CentOS Linux 7. Once the Azure DevOps Terraform provider has been updated to use an updated SDK we can use that to replace the workaround of using the Terraform Azure DevOps Scale Set Agent module. Custom OS Image – What’s the best choice for your workload? 💾 Azure Storage Redundancy Strategies Locally Redundant Storage (LRS) – Data replication within a single datacenter. When the template is rendered, anything in the settings section will be rendered in clear text. Jul 7, 2025 · To create VMs in a quick and consistent manner, some form of automation is typically desired. May 30, 2023 · Azure Virtual Machine Scale Sets (VMSS) is a unique, innovative service offered by Microsoft Azure, which enables the creation, management, and scaling of a large number of homogenous VMs. When the previous VMSS was set up manually this was added into the custom data property. It should be scaled automatically (custom scaling based on metrics). Memory Utilization? I created a VMSS (manual scale) based on Ubuntu (22. You can add CustomScript extension to your VM using: Azure CLI (python based / Cloud Shell) Azure XPlat CLI (node based) Azure PowerShell Azure Resource Manager (ARM) Templates Azure Virtual Machines REST API ℹ️ Please read the Using the Azure Custom Script Extension with Linux Virtual Machines page for detailed usage instructions. A az vmss create -g MyResourceGroup -n MyVmss --image Debian11 --custom-data MyCloudInitScript. 5. If you reference the cloud-init configuration with the --custom-data switch, whatever is contained in your custom data will be available to cloud-init when the VM boots. az vmss extension set --debug --name 'CustomScriptExtension' ` --resource-group 'my-rg' ` Jul 10, 2025 · Reimaging a virtual machine in a Virtual Machine Scale Set replaces the old OS disk with a new OS disk. Oct 28, 2024 · Learn how to use the Azure CLI to create a custom VM image that you can use to deploy a Virtual Machine Scale Set Azure virtual machine scale sets support VM instances with attached data disks. Any idea what I am missing or is that a wrong usage? A scale set can define the configuration of an attached data disk that applies to all VMs in the set. May 2, 2025 · In this tutorial, you learn how to use cloud-init and Key Vault to customize Linux VMs the first time they boot in Azure Apr 6, 2025 · Contribute to MicrosoftDocs/azure-compute-docs development by creating an account on GitHub. Thank you for helping to improve Microsoft Q&A! Jan 14, 2024 · Fact: VMSS in Microsoft Azure provides a reliable and resilient solution for managing and maintaining virtual machines at scale, ensuring uninterrupted service availability. Generally, Custom data is sent to the VM along with the other provisioning configuration information such as the new hostname, username, password, certificates and keys, etc. This article gives details on using custom data and cloud-init on Azure virtual machines. A scale set can define the configuration of an attached data disk that applies to all VMs in the set. This article gives details on using custom data and cloud-init on Azure virtual machines. Preface When you are provisioning VMs or instances in the cloud, you generally need to customize the image being used by each instance. Sep 7, 2021 · At Ignite March 2021, we announced the Public Preview of Azure Virtual Machine Scale Sets with flexible orchestration mode, an evolution of Azure Virtual Machine Scale sets that makes it easier to run a variety of virtual machine workloads at high scale with high availability. Learn about the Azure Instance Metadata Service and how it provides information about currently running virtual machine instances in Linux. This provides efficient resource usage, access to private networks, and more control over your build environment compared to Microsoft-hosted agents. On the next task I deploy the entire infrastructure via Terraform where the key point is usage of Mar 29, 2024 · Hi @Stubbs Tristan , Thanks for contacting Microsoft Q&A platform. Custom data is made available to the VM during first startup or setup, which is called provisioning. Learn how to use Terraform to configure and version an Azure virtual machine scale set from a custom image generated by Packer Details how to use managed and unmanaged disks in Azure Resource Manager templates for Azure VMs. Azure Virtual Machine Scale Sets with Terraform Step-00: Introduction Create Azure Virtual Machine Scale Sets Associate Azure Virtual Machine Scale Sets with Azure Standard Load Balancer Terraform Dynamic Blocks Network Security Group with Inline Security Rules (Nested Blocks) Inline Network Security Rules - Re-Implement with Dynamic Blocks New Files: Web Linux VMSS c7-01-web-linux-vmss-input May 11, 2023 · Related command az vmss update Is your feature request related to a problem? Please describe. Compare scale sets features with VM features. Jul 14, 2020 · You can inject data into a Windows virtual machine on Azure, but you can't execute it using custom data or cloud init unfrotunately. This template also deploys a Virtual Network, Public IP addresses, and a Network Interface. 11, you can write metrics directly to the Azure Monitor metrics store, where standard platform metrics are already collected. Typical tasks performed in these custom scripts include installing additional packages, configuring system services, creating users, etc. This can be configured via user data and custom script extensions. xml file, which is copied to the /var/lib/waagent directory during provisioning. It also assumes Uniform VMSS mode but should be easily changed to support Flexible as well (more on that below). Once the scale set model is updated, the new Jan 10, 2020 · I am trying to use custom_data in a azurerm_virtual_machine_scale_set. Learn how to automate Linux virtual machine configuration tasks in Azure by using the Custom Script Extension Version 2. When you back up data in Azure, you store that data in an Azure resource called a Recovery Services vault. mode Verify that the upgrade policy is set to Create a Virtual Machine Scale Set in Azure and configure autoscaling rules using Terraform. Aug 18, 2023 · I know how to create a Windows VMSS CustomScriptExtension using an inline script via terraform azurerm_virtual_machine_scale_set_extension resource but not quite sure how to create an extension whi Nov 7, 2025 · Learn how to collect data from virtual machines, virtual machine scale sets, and Azure Arc-enabled on-premises servers by using the Azure Monitor Agent. Compute/virtualMachineScaleSets syntax and properties to use in Azure Resource Manager templates for deploying the resource. , via UI or azure CLI) it won't get the new custom_data (e. Jun 25, 2019 · Azure VM Custom Script Extensions with Terraform 25 Jun 2019 Terraform provides support for Azure Virtual Machine Custom Script extensions, that are often used to configure a newly created virtual machine and prepare it so it is ready to perform its role. In Jul 7, 2024 · In summary: Azure VMs are ideal for custom configurations and small-scale deployments, while VMSS excel at handling large workloads, automatic scaling, and high availability. Then I created a Log analytics workspace and configured data collection rules in Azure Monitor by mentioning the source as the VMs inside VMSS and destination as Log analytics workspace. 📋 Create a VM Scale Set from the Ubuntu image with 3 instances, passing the cloud-init. Changing this forces a new resource to be created. e. For more information about how cloud-init works natively in Azure and the If you reference the cloud-init configuration with the --custom-data switch, whatever is contained in your custom data will be available to cloud-init when the VM boots. Select the right subscription to establish service connection to azure resources, where you have deployed the Azure VMSS. Retrieve it for both Windows and Linux. Any configured extensions and custom data scripts are run on the OS disk, while data disks are retained. If the Linux VM already knows what to do with such files, they execute automatically. The Custom Script Extension doesn't have any way to bypass certificate validation. Use special tools available on some systems to detect and handle custom data automatically. An upgrade works by replacing the OS disk of a virtual machine with a new disk created using the image version. This can´t be c Nov 13, 2025 · Virtual Machine Scale Sets (VMSS) is a powerful feature of Microsoft Azure that allows you to create and manage a set of identical virtual machines in Azure. May 22, 2025 · Azure VM Applications provide a streamlined, scalable and secure way to package, manage, and deploy applications across Azure Virtual Machines (VMs), Virtual Machine Scale Sets (VMSS). Provisioning is the process where VM creation parameters (for example, host name, username, password, certificates, custom data, and keys) are made available to the VM. Nov 23, 2021 · I'm trying to make a VMSS with persistent data disks and developed a PowerShell script to be executed in the CustomScript extension. Azure Microsoft. An important concept of VMSS is an Azure load balancer; it Apr 21, 2021 · Below example taken from the learn: Deploy the update by using a custom script extension In the Azure portal, run the following command to view the current upgrade policy for the scale set: Azure CLI: az vmss show \ --name webServerScaleSet \ --resource-group scalesetrg \ --query upgradePolicy. Nov 16, 2022 · Description # Virtual Machines Scale Sets support the ability to execute custom scripts on launch. Jul 1, 2025 · You can also use the Azure Monitor Agent, a diagnostics extension on your Azure resources, or an external monitoring system. However, it occasionally fails to attach a disk to a VM instance when scaling up occurs with 4 or more instances at a… Nov 7, 2025 · Learn how to collect data from virtual machines, virtual machine scale sets, and Azure Arc-enabled on-premises servers by using the Azure Monitor Agent. To download a script externally, such as from GitHub or Azure Storage, you need to open other firewall or network security group (NSG) ports. Other options for storing data include: Azure Managed Disks - Premium v2, Premium, Standard, Ultra Azure Files - Server Message Block (SMB) or Network File System (NFS) shared Learn how to add a custom image to an existing Azure Virtual Machine Scale Set template Nov 16, 2023 · Please read How to create a custom Rocky Linux image in Azure using Hashicorp Packer In this article, I will explain how to use our custom image in terraform script to create an Azure virtual Optimized for high availability and scalability with identical or mixed virtual machine types. To minimize the application downtime, upgrades take place in batches, with no more than 20% of the scale set upgrading at any time. 0-0 libgtk-3-0 libgbm-dev libnotify-dev libxss1 libasound2 libxtst6 firefox Azure Virtual Machine Scale Set Example of creating a Windows Azure VMSS. In contrast, AWS does refresh instances on custom_data updates. I also have a custom exporter that collects data from my services running on Azure VMSS. You can attach data disks when the scale set is created, or to an existing scale set. These cloud-init scripts run on first boot once the resources have been provisioned by Azure. For this kind of requirement, you can use create_before_destroy along with lifecycle rules and a null resource using commands which can trigger whenever there is a change in custom data. This article describes how to modify an existing scale set with the REST APIs, Azure PowerShell, or Azure CLI. Now, in Part 3, we’ll use that custom image to create a Virtual Machine Scale Set (VMSS), enabling scalable, load-balanced deployments to meet dynamic workload demands efficiently. To ensure they're kept secret, use the protectedSettings section instead. The VM being provisioned can be a web server Changing this forces a new resource to be created. Learn how to use the Azure CLI to create and use Managed Disks with Virtual Machine Scale Set. Aug 22, 2024 · Applies to: ️ Linux VMs ️ Flexible scale sets This article shows you how to use cloud-init to run an existing bash script on a Linux virtual machine (VM) or virtual machine scale sets (VMSS) at provisioning time in Azure. txt file as the custom data script. These updates may include how to update the configuration of the scale set, or change the application configuration. For Throughout the lifecycle of your applications, you may need to modify or update your Virtual Machine Scale Set. Nov 7, 2024 · Reimaging a virtual machine in a Virtual Machine Scale Set replaces the old OS disk with a new OS disk. If you previously deployed the scale set with the az vmss create command, you can run the az vmss create command again to update the scale set. Thank you, Barak. The number of VM instances can automatically increase or decrease in response to demand or a defined schedule. Az cli for updating the VMSS is as follows. Any direct manipulation of those VMSSs (from an Azure resource provider perspective) behind your nodepools I'm attempting to deploy to my Virtual machine scale set using the custom script extension as below. If not, please let us know what is still needed in the comments so the question can be answered. osProfile. To reimage a set of existing instances in a scale set, you must individually reimage each instance. Jun 19, 2024 · How to scale Azure VMSS Linux VMs based on custom metric e. Here's an example of how you can use a custom script extension to install Docker on a Linux VM: Create a shell script that installs Docker. A Apr 28, 2020 · Read Custom Data and Cloud-Init on Microsoft Azure for more details. cloud-config package-update: true package_upgrade: true packages: xvfb libgtk2. I tried many ways to run my script against VMSS but its not working. The azurerm_virtual_machine_scale_set resource has been deprecated in favour of the azurerm_linux_virtual_machine_scale_set and azurerm_windows_virtual_machine_scale_set resources. Need some help on how to achieve this. I'm able to create VMSS successfully but when I try to run script to enroll it to agent pool, I'm hitting a wall. This sample provides an example of how to use Custom Script Extenion to update a Windows application running in Azure Virtual Machine Scale Sets (VMSS). Scale sets provide high availability to your applications, and allow you to centrally Azure custom Data is equivalent feature of AWS userdata. Feb 13, 2025 · Utilize Azure CLI or templates to deploy the VMSS with the custom script extension, and verify that the scaling policy is appropriately configured for your application. custom_data_worker variable output, and it is rendered properly. In this tutorial you learn how to: May 7, 2021 · In the next chapter we will take a deeper look into how to deploy and configure VMSS in Azure using Terraform. Apr 8, 2025 · Hi Yuk Leong Chow, Configure Backup for Azure Virtual Machine Scale Sets: Ensure you have a Recovery Services Vault in the same region as your VMSS. dedicated_host_id - (Optional) The ID of a Dedicated Host where this machine should be run on. This article describes the process to send guest OS performance metrics for a Windows virtual machine scale set to the Azure Monitor data store. In this article, I’ll Walk you through implementing scaling self-hosted GitHub Actions runners using Azure Virtual Machine Scale Sets (VMSS). Jan 1, 2024 · I have Azure managed Prometheus that collects data from my AKS and managed Grafana. Including how to add, prepare, list, and detach disks. User data is a new version of custom data and it offers added benefits: User data can be retrieved from Azure Instance Metadata Service (IMDS) after #Injecting custom data into an Azure virtual machine Injecting a script or other data into an Azure virtual machine when it is being provisioned is a very common scenario, regardless of whether the operating system is Windows or a Linux distribution. Apr 21, 2023 · On Portal:- I created one Uniform orchestrated VMSS and enabled automatic update like below:- Added the custom script extension to install Azure CLI like below:- Now, When I logged into my VMSS instance the az module was automatically reflected without a need to do it manually upgrade refer below:- Reference:- Oct 27, 2023 · Learn how to use Terraform to configure and version an Azure virtual machine scale set. For more information, see Azure scale sets and attached data disks. May 27, 2024 · In Azure, custom data and user data are typically used interchangeably, with the primary focus on providing initialization scripts and configuration during VM creation. This allows changes to the OS, data disk profile (such as admin username and password), and custom data to be applied. I can create a VM, install docke Aug 22, 2024 · Learn about the design considerations for your Azure Virtual Machine Scale Sets. Flexible Orchestration is the recommended orchestration mode when deploying scale sets in Azure. NOTE: Although this articles discusses using the --custom-data switch for cloud-init files, you can also pass arbitrary code or files using this switch. Once the scale set model is updated, the new It’s the same custom data approach to use cloud-init files with a VMSS. I can open the tfstate file and see a uuencode value for custom_data on the VMSS Aug 22, 2024 · For detailed information on how to create a scale set with attached data disks, prepare and format, or add and remove data disks, see one of the following tutorials: Azure CLI Azure PowerShell The rest of this article outlines specific use cases such as Service Fabric clusters that require data disks, or attaching existing data disks with content to a scale set. Whilst this will continue to be available throughout the 2. Feb 24, 2023 · Microsoft Azure has a similar feature called custom data. custom_data - (Optional) The Base64-Encoded Custom Data which should be used for this Virtual Machine. Today, I wanted to explore that portion in a bit more depth. To refresh any deployed instances set the Number of agents to keep on standby in Azure DevOps for the agent pool to 0. Nov 22, 2024 · In the first two parts of this series, we connected to a Windows VM, added a data disk, and captured a reusable image with Azure Compute Gallery. Select the script type as shell using dropdown and choose inline script and add the Az cli script. May 23, 2023 · The other day I published a comprehensive blog post about deploying gMSA on AKS with Terraform. You must integrate an Azure Load Balancer Oct 5, 2023 · In our example, we will create a VMSS in Azure via Azure Cloud Shell with the following commands: Create a Resource Group called vmss-demo: az group create -l eastus -n vmss-demo To make use of Cloud-init, we need to create a cloud-config file which will contain the dependencies and commands we want to be executed on the VM. yml Create a VMSS from a generalized gallery image version. Jul 7, 2025 · 适用于： ️ Linux VM ️ Windows VM ️ 灵活规模集 你可能需要在预配时将脚本或其他元数据注入 Azure 虚拟机 (VM)。 在其他云中，此概念通常称为“用户数据”。 在 Azure 中有一项称作自定义数据的类似功能。 首次启动或设置时，VM 可以使用自定义数据，这称为预配。 预配是指 VM 使用 VM 创建参数（例如 Jul 7, 2025 · User data is a set of scripts or other metadata that's inserted to an Azure virtual machine at provision time. 04) Linux VMs. May 27, 2024 · Custom Data and User Data are mechanisms to provide configuration data to a virtual machine (VM) at the time of its creation. Any application on the virtual machine can access the user data from the Azure Instance Metadata Service (IMDS) after provision. Aug 27, 2023 · Conclusion In this comprehensive guide, we've explored the process of creating a Virtual Machine Scale Set (VMSS) from a custom image in Azure Compute Gallery. NOTE] This article describes how custom data can be injected by using a VM created with the Azure Service Management API. VM Applications is the best suited method for deploying tools, agents, AI Apps, security components, and line-of-business applications across Azure. nxkod ezrz njbxua mvjtx akfa hkoh uvtdg ouocl yma dyhet qusxf jwuw shtrjr qcmdj anvzil