Effective Azure Policy Management and Governance is crucial for any organization using Azure. Azure Policy is a service that helps enforce compliance and governance across your Azure resources.
With Azure Policy, you can define and assign policies to your resources to ensure they meet your organizational standards. This helps maintain consistency and reduces the risk of non-compliance.
Azure Policy integrates with Azure Cost Estimator to help manage costs. It can also be used with Azure Cost Analysis to track and optimize costs.
By implementing Azure Policy, you can automate enforcement of policies and reduce the administrative burden on your IT team.
Getting Started
To get started with Azure Policy, you'll want to learn how to programmatically create policies. This is a great way to streamline your policy management.
Developer documentation is available to help you with this process. You can find it by looking up "Developer documentation" in your Azure resources.
Azure policies are a crucial part of managing your cloud resources. They help you enforce compliance and governance across your entire environment.
To create a policy, you'll first need to understand the concept of a policy definition. This is a JSON file that defines the policy rules and behavior.
Policy Management
Policy management is a crucial aspect of Azure Policy, and it's essential to approach it with care. Start with an audit or auditIfNotExist effect instead of an enforcement (deny, modify, deployIfNotExist) effect to track the impact of your policy definition on resources in your environment.
Consider organizational hierarchies when creating definitions and assignments. This means creating definitions at higher levels such as the management group or subscription level, and then creating the assignment at the next child level. For example, if you create a definition at a management group, the assignment can be scoped down to a subscription or resource group within that management group.
To manage Azure Policy resources as code, we recommend manual reviews on changes to policy definitions, initiatives, and assignments. This approach enables you to track changes and updates to your policies, making it easier to maintain compliance and governance.
Here are some best practices for policy management:
- Start with an audit or auditIfNotExist effect instead of an enforcement effect.
- Consider organizational hierarchies when creating definitions and assignments.
- Create and assign initiative definitions even if starting with a single policy definition.
- Manage Azure Policy resources as code with manual reviews.
Recommendations for Managing
When starting with Azure Policy, it's recommended to begin with an audit or auditIfNotExist effect instead of an enforcement effect. This allows you to track the impact of your policy definition on resources in your environment.
Starting with an enforcement effect can hinder automation tasks already in place, such as scripts that autoscale applications. This is especially true if you have scripts that manage resources in a way that policy definitions might not anticipate.
Consider organizational hierarchies when creating definitions and assignments. Creating definitions at higher levels, such as the management group or subscription level, makes it easier to scope down to specific child levels.
For example, if you create a definition at the management group level, you can assign it to a subscription or resource group within that management group.
Creating and assigning initiative definitions is also a good practice, even if you start with a single policy definition. This enables you to add policy definitions to the initiative later without increasing the number of assignments to manage.
Here are some specific recommendations for managing Azure Policy resources as code:
- Manage policy definitions, initiatives, and assignments as code.
- Review changes to policy definitions, initiatives, and assignments manually.
- Use suggested patterns and tooling to streamline your workflow.
By following these best practices, you can ensure that your Azure Policy management is efficient, effective, and scalable.
Managing Evaluation Responses
Managing Evaluation Responses is a crucial aspect of Policy Management. Business rules for handling non-compliant resources vary widely between organizations.
Denying the resource change is one option, where the platform will not allow the change to proceed. This can be a simple yet effective way to enforce compliance.
Logging the change to the resource is another option, where the platform will record the attempted change for future reference. This can be useful for auditing and troubleshooting purposes.
Alter the resource before the change is also possible, where the platform will modify the resource to bring it into compliance before allowing the change. This can be a more complex approach, but can be effective in certain situations.
Alter the resource after the change is another option, where the platform will modify the resource to bring it into compliance after the change has been made. This can be useful in situations where the change itself is not compliant, but the resource can be modified to become compliant afterwards.
Deploying related compliant resources is also an option, where the platform will automatically deploy resources that are compliant with the policy. This can be useful in situations where multiple resources are involved.
Business rules can also dictate blocking actions on resources, preventing any changes from being made to the resource. This can be a simple yet effective way to enforce compliance.
Here are some examples of business responses to non-compliant resources:
- Deny the resource change
- Log the change to the resource
- Alter the resource before the change
- Alter the resource after the change
- Deploy related compliant resources
- Block actions on resources
Objects
Policy management involves a wide range of objects, including policies, rules, and entitlements.
These objects are often referred to as the "building blocks" of policy management, and they play a crucial role in defining and enforcing organizational policies.
A policy is a statement that outlines the rules and procedures that govern a particular aspect of an organization's operations.
Rules, on the other hand, are specific conditions or actions that must be taken in order to enforce a policy.
Entitlements are the permissions or access rights granted to users or groups within an organization.
In a typical policy management system, these objects are stored in a centralized repository and can be easily accessed and managed by authorized personnel.
This allows for efficient and effective management of policies, rules, and entitlements, which is essential for maintaining compliance and reducing risk.
Access Control
Access Control is a crucial aspect of Azure Policy. Azure Policy has several permissions, known as operations, in two Resource Providers: Microsoft.Authorization and Microsoft.PolicyInsights.
These permissions are granted to users through built-in roles, such as Resource Policy Contributor, Owner, Contributor, and Reader. The Resource Policy Contributor role includes most Azure Policy operations, while Owner has full rights.
Contributor may trigger resource remediation, but can't create or update definitions and assignments. User Access Administrator is necessary to grant the managed identity on deployIfNotExists or modify assignments necessary permissions.
Azure Policy operations can have a significant effect on your Azure environment. Only the minimum set of permissions necessary to perform a task should be assigned and these permissions shouldn't be granted to users who don't need them.
Here's a breakdown of the built-in roles and their permissions:
Azure Policy and Azure RBAC work together to provide full scope control in Azure. Azure Policy ensures resource state is compliant to business rules without concern for who made the change or who has permission to make a change.
Configuration and Cleanup
To properly clean up resources, follow these steps: select Definitions (or Assignments) under Authoring in the Azure Policy page.
If you're trying to delete a definition, search for the new initiative or policy definition you want to remove. If you're trying to delete an assignment, search for the assignment you want to remove.
Once you've found the definition or assignment, right-click the row or select the ellipses at the end of the definition (or assignment), and select Delete definition (or Delete assignment).
Maximum Object Count
When managing Azure Policy objects, it's essential to be aware of the maximum count limits to avoid hitting these thresholds.
You can have up to 500 policy definitions per scope, which can be a management group or subscription.
Scope limits also apply to initiative definitions, where you can have a maximum of 200 per scope, or 2,500 across the entire tenant.
Policy or initiative assignments are also subject to a maximum count of 200 per scope.
Exemptions, on the other hand, have a scope limit of 1,000 per scope.
Here's a summary of the maximum object count limits per scope:
These limits can help you plan and manage your Azure Policy objects more efficiently.
Clean Up
If you're done working with resources from this tutorial, you can delete any policy assignments or definitions created above. To do this, select Definitions (or Assignments if you're trying to delete an assignment) under Authoring in the left side of the Azure Policy page.
You can search for the new initiative or policy definition (or assignment) you want to remove. Once you've found it, right-click the row or select the ellipses at the end of the definition (or assignment), and select Delete definition (or Delete assignment).
To delete multiple policy assignments or definitions, you can use the search feature to find them all at once. This can save you time and effort in the cleanup process.
Here's a step-by-step guide to deleting policy assignments or definitions:
- Select Definitions (or Assignments) under Authoring in the left side of the Azure Policy page.
- Search for the policy assignment or definition you want to delete.
- Right-click the row or select the ellipses at the end of the definition (or assignment), and select Delete definition (or Delete assignment).
Remember to be careful when deleting policy assignments or definitions, as this action is permanent and cannot be undone.
Implementation and Automation
Automating Azure policy implementation is a game-changer for cloud compliance. You can bring your resources into compliance using bulk remediation instead of going through configuration errors one at a time.
To minimize drift, you can configure automated remediation tasks through the Azure portal, PowerShell, or CLI. This ensures that your resources are always in compliance, reducing the risk of misconfigurations.
By applying policies in the CI/CD pipeline, you can give developers more agility while reducing the number of approval processes when releasing a build. This also helps explain the reasons for non-compliance, making it easier to identify and fix issues.
Apply in CI/CD
You can integrate Azure Policy with your CI/CD pipeline to manage policies-as-code and surface policy compliance assessments in deployment workflows. This allows developers to have more agility while reducing the number of approval processes when releasing a build.
Azure Policy has a native integration with GitHub and Azure DevOps, making it easy to apply policies in your CI/CD pipeline. By managing policies-as-code, you can ensure that your policies are version-controlled and easily trackable.
To apply policies in your CI/CD pipeline, you can use the az policy set-definition command in Azure CLI. This command allows you to create a policy initiative definition with an existing policy definition.
By integrating Azure Policy with your CI/CD pipeline, you can explain the reasons for non-compliance, giving developers more insight into why their builds are failing. This can help reduce errors and improve the overall development process.
Azure Policy supports dealing with existing non-compliant resources without needing to alter that resource. This means you can remediate non-compliant resources at scale using bulk remediation, reducing the time needed to audit your environments.
Helpful AI assistant
Having a helpful AI assistant like me can make a huge difference in implementing and automating initiatives. I can simplify complex tasks and provide step-by-step guidance.
Initiative definitions are a collection of policy definitions tailored toward achieving a singular overarching goal. This simplifies managing and assigning policy definitions by grouping a set of policies as one single item.
For example, creating an initiative titled Enable Monitoring in Microsoft Defender for Cloud can help monitor all available security recommendations in your Microsoft Defender for Cloud instance. Under this initiative, you would have policy definitions such as monitoring unencrypted SQL databases, OS vulnerabilities, and missing Endpoint Protection.
Initiative parameters help simplify initiative management by reducing redundancy. They are parameters being used by the policy definitions within the initiative.
In a scenario where you have an initiative definition with policy definitions each expecting a different type of parameter, you have three options when defining the initiative parameters. These options include using the parameters of the policy definitions within this initiative, providing values to the parameters of the policy definitions, or providing a list of value options that can be used when assigning this initiative.
Here are the three options for defining initiative parameters:
Having a helpful AI assistant like me can help you navigate these options and make the most of initiative definitions.
Management and Security
Managing Azure Policy is a breeze, especially when it comes to security. Azure Policy allows you to control and assess compliance inside all AKS clusters at scale.
With Azure Policy, you can apply policies for pods, namespaces, and ingress to ensure that your AKS clusters meet resource governance requirements. This is a game-changer for large-scale deployments.
You can choose between audit and enforcement policies to track compliance status or enforce configurations inside your AKS clusters. This level of control is essential for maintaining a secure and compliant environment.
Azure Policy makes it easy to go deeper into your AKS clusters and apply policies to ensure they meet your resource governance requirements.
Troubleshooting and Support
Troubleshooting Azure Policy can be a challenge, but there are some common issues to look out for. Azure Policy is not applied to a resource because it is not a supported resource type.
Check the Azure Policy definitions to ensure they are correct and compliant with the expected format. Azure Policy definitions are case-sensitive and must be in the correct format.
Azure Policy is not applied to a resource because it is not in the correct scope. The scope of Azure Policy is determined by the subscription, resource group, or management group.
If you are experiencing issues with Azure Policy, try checking the audit results to see if there are any errors. Azure Policy audit results can provide valuable insights into what is going wrong.
Azure Policy is not applied to a resource because it is not in the correct location. Azure Policy can only be applied to resources in the same location as the policy definition.
Azure Policy is not applied to a resource because it is not in the correct condition. The condition of Azure Policy is used to determine whether a resource meets the policy requirements.
Preview and Updates
As you work with Azure Policy, you may come across policies with a "preview" or "deprecated" status. A policy is in preview if a referenced property is also in preview, or if the policy is new and needs customer feedback.
A policy may get deprecated if the referenced property becomes deprecated or if a breaking change occurs in the resource type's API version. This can happen due to manual migration needs or changes in the resource type's latest API version.
Existing assignments are not impacted by a policy's deprecation or removal from preview. The policy continues to be evaluated and enforced, and existing assignments work as-is.
If a policy is deprecated, you'll notice the following changes: the display name is appended with '[Deprecated]:', the description is updated with additional information, and the version number is updated with a '-deprecated' suffix.
Here are the specific changes that occur when a policy gets deprecated:
- Display name is appended with ‘[Deprecated]:’ prefix
- Description gets updated to provide additional information regarding the deprecation
- The version number is updated with ‘-deprecated’ suffix
To deter customers from making new assignments, deprecated definitions are hidden in the definition list view in Azure Portal.
Frequently Asked Questions
What is the difference between Azure policy and initiative?
Azure Policy defines rules for resource properties, while an Azure Initiative groups related policies together to achieve a specific goal or purpose, making it easier to manage and enforce compliance across multiple resources. Think of an Initiative as a collection of policies working together to achieve a common objective.
What is the difference between Azure policy and GPO?
Azure Policy enforces rules on Azure resources in real-time, whereas Group Policy applies settings on login or policy refresh, primarily for on-premises environments. This key difference affects how each policy is enforced and managed.
What are Azure policy?
Azure Policy is a service that helps organizations enforce compliance and security by defining rules and effects over resources, identities, and groups. It's a powerful tool for managing and governing Azure resources.
What is the difference between Azure policy definition and initiative?
Azure policies define rules and effects for resources, while Azure initiatives are a group of related policies that work together to achieve a common goal, providing a more structured approach to governance. Think of initiatives as a collection of policies that help you manage and enforce specific business requirements.
What is the policy definition set of Azure?
Azure Policy definitions describe resource compliance conditions and effects, using aliases to access resource property fields. They determine the actions to take when conditions are met, ensuring resources conform to desired settings.
Sources
- https://learn.microsoft.com/en-us/azure/governance/policy/overview
- https://learn.microsoft.com/en-us/azure/governance/policy/tutorials/create-and-manage
- https://medium.com/@cloud.devops.enthusiast/azure-policy-942253b46a59
- https://azure.microsoft.com/en-us/products/azure-policy
- https://github.com/Azure/azure-policy/blob/master/built-in-policies/README.md
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