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Azure RBAC Custom Roles

Introduction
Azure supports Role-Based-Access-Control (RBAC) to controlling what actions a principal (user, service principal etc) can perform via the Azure Portal, XPlat Cli or Azure PowerShell module.

Azure provides quite a few built-in roles (48 at this time) but it is also possible to define your own custom roles. In this post I will provide a few general tips on RBAC and also how to go about creating your own custom roles.

Actions and NotActions Actions are permissions/operations that you wish to allow and NotActions are ones that you wish to restrict. When assigning roles you need to be conscious of the fact that NotActions are not deny rules as mentioned in the Microsoft document:

If a user is assigned a role that excludes an operation in NotActions, and is assigned a second role that grants access to the same operation, the user will be allowed to perform that operation. NotActions is not a deny rule – it is simply a convenient way to create a set of allowed operations when sp…

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