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How to create custom Azure DevOps Pipelines that autoscale with Virtual Machine Scale Sets (VMSS)
- Using custom pipelines in Azure DevOps can overcome limitations of Microsoft-hosted pipelines, such as accessing private networks and disk size restrictions.
- Utilizing Virtual Machine Scale Sets (VMSS) allows for scalable deployment of identical virtual machines in Azure Pipelines.
- By creating a custom VM image using Packer and Azure CLI, you can include specific tools like Azure CLI not available in base images.
- Steps to create a VM image include defining VM details in Packer, installing required tools, and deprovisioning to maintain a clean state.
- Creating the VMSS involves specifying image, resource group, VM size, and authentication type using Azure CLI commands.
- Service principal creation is necessary to manage VMSS in Azure DevOps, granting Contributor role and configuring service connection.
- Configure VMSS to access Azure Key Vault by assigning Key Vault Administrator role, disabling public access, and attaching to VMSS network.
- The process can be automated using Azure DevOps pipelines, ensuring efficient resource usage and access control.
- Additional references are provided for detailed guides on building VM images with Packer, installing Azure CLI, and creating service connections.
- Overall, custom pipelines and VMSS integration offer more control and scalability in Azure DevOps for unique project requirements.
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