Role

As explained in Infrastructure as Code, Patterns and Practices: With examples in Python and Terraform

An access-control role is a named collection of permissions that can be assigned to an identity or service account.

A role is a named collection of permissions assigned to a user or service account. Grouping permissions into roles makes access composable: teams can add or remove a defined access set as infrastructure changes. section 8.1.1

Use roles to enforce least privilege by granting only the access required for a task. A delivery pipeline might manage network, application, and database resources without receiving broader administrative access. section 8.1.1

Extract project-level roles from a monolithic infrastructure configuration without disrupting live access:

• Copy the IAM configuration into a separate directory or repository. section 10.2.1
• Initialize the new infrastructure state and import the existing roles and service accounts rather than recreating them. section 10.2.1
• Run a plan or dry run and verify that the separated configuration produces no changes. section 10.2.1
• Remove the role configuration from the monolith’s state and code only after the separated configuration matches live infrastructure. section 10.2.1

Frontend pipeline roles

A frontend delivery pipeline receives roles/compute.networkAdmin, roles/appengine.appAdmin, and roles/cloudsql.admin. These permissions allow network, application, and database administration while excluding unrelated resource types. section 8.1.1

Figure 10.5 The sundew system’s IAM policies for the GCP project have no dependencies, and you can easily refactor them without disrupting other infrastructure.

Shows why IAM policies with no resource dependencies can be separated first during infrastructure refactoring. section 10.2.1

How Infrastructure as Code, Patterns and Practices: With examples in Python and Terraform covers it

How deep it goes

Explains permission grouping and demonstrates extraction, state import, verification, and removal, but does not detail role internals.

Examples

Uses GCP project IAM extraction and a frontend pipeline limited to network, application, and Cloud SQL roles.

What it assumes

Assumes familiarity with infrastructure configuration, IAM resources, and deployment plans; teaches permission grouping and state-safe extraction.

What you can do after

Operate/configure role-based access by composing minimum permission sets and safely importing existing IAM resources into separated Terraform state.

How it connects

Connects roles with IAM, permissions, service accounts, least privilege, infrastructure as code, Terraform, and configuration refactoring.

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Also explained in

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  Authorization in ActionA role is an authorization abstraction that groups permissions or access responsibilities for assignment to principals.
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  Amazon Web Services in Action, Third Edition: An in-depth guide to AWSAn IAM role is an AWS identity with permissions that can be assumed by trusted entities such as services or processes.
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  Effective Platform EngineeringA cloud role is a permission-bearing identity configuration that can be assumed by an authorized user, service, or pipeline.
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  Spring Security in Action, Second EditionA role is a named grouping of permissions or authorities used to represent an actor's access level.
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  MongoDB 8.0 in Action, Third EditionA database role is a named set of permissions assigned to a user or other identity.
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  Kubernetes for DevelopersA Kubernetes Role is a namespace-scoped object that defines permissions for API groups, resources, and verbs.
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  ScyllaDB in ActionA role is a database identity to which permissions can be assigned and through which users can receive those permissions.
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  Building Web APIs with ASP.NET CoreA role is a named identity-group designation assigned to a user for evaluating the permissions and access the user has.
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  Software Security for DevelopersA role is a named collection of permissions or access responsibilities assigned to a subject in an access-control system.
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  The Well-Grounded Python Developer: How the pros use Python and FlaskAn authorization role is a named grouping of permissions that determines which actions a user may perform.

Compare how 11 books explain role →

Related concepts

• role-based access controlused by · Role-based access control is an authorization model that assigns permissions to roles and grants users or other principals access through their assigned roles.
• promptconfigures · An input, typically containing instructions or context, supplied to an artificial-intelligence model to guide or elicit its output.
• authorizationhas part · Authorization is the determination and enforcement of rules governing which subjects may access resources or perform operations.
• administratorincludes · An administrator is a user, account, role, or process granted elevated permissions to manage a system, application, or its resources and settings.
• ASP.NET Core Identityused by · ASP.NET Core Identity is an extensible ASP.NET Core membership system for managing user accounts, credentials, claims, roles, authentication, and related identity data.
• custom roleincludes · A custom role is a user-defined authorization role with an explicitly selected set of permissions or privileges.

This explainer was generated by Manning's knowledge graph from the text of Infrastructure as Code, Patterns and Practices: With examples in Python and Terraform. The section links point to the parts of the book it draws on.