IAM roles

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Google Cloud Platform Fundamentals: Core Infrastructure

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Google Cloud

Google Cloud Platform Fundamentals: Core Infrastructure

3780 ratings

Curso 1 de 6 em Specialization Architecting with Google Cloud Platform

<<< ATTENTION >>> Learners interested in Google Cloud Platform can continue to learn in either of our latest GCP infrastructure specializations. Option 1: The Developing Applications with Google Cloud Platform Specialization is available on Coursera. This brand-new Specialization teaches you to build secure, scalable, and intelligent cloud-native applications. Visit https://www.coursera.org/specializations/developing-apps-gcp for more details. Option 2: The Architecting with Google Cloud Platform Specialization is also available. This Specialization has updated, improved content that will help you if you are preparing for the Google Certified Professional - Cloud Architect exam. Head to https://www.coursera.org/specializations/gcp-architecture to explore the updated content. Google Cloud Platform Fundamentals: Core Infrastructure covers the fundamentals of Google Cloud Platform and is the first course in both specializations. This course introduces you to important concepts and terminology for working with Google Cloud Platform (GCP). You learn about, and compare, many of the computing and storage services available in Google Cloud Platform, including Google App Engine, Google Compute Engine, and Google Container Engine. Notes: • You'll need a Google/Gmail account and a credit card or bank account to sign up for the Google Cloud Platform free trial (Google services are currently unavailable in China). • If you are a Google Cloud Platform customer with European Union (EU) and Russian billing addresses, read the VAT Overview documentation at: https://cloud.google.com/billing/docs/resources/vat-overview • More Google Cloud Platform free trial FAQs are available at: https://cloud.google.com/free-trial/

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Getting Started with Google Cloud Platform

GCP customers use projects to organize the resources they use. They use Google Cloud Identity and Access Management, also called “IAM,” to control who can do what with those resources. They use any of several technologies to connect with GCP. This module covers each of these topics, and it introduces a service called Cloud Launcher that is an easy way to get started with GCP.

Identity and Access Management (IAM)2:58

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Compute Engines InstantAdmin Role lets whoever has

that role perform a certain set of actions on virtual machines.

The actions are listing them,

reading and changing their configurations,

and starting and stopping them.

And which virtual machines?

Well, that depends on where the roles apply.

In this example, all the users of a certain Google Group have the role,

and they have it on all the virtual machines in project_a.

If you need something, even finer-grained,

there are custom roles.

A lot of companies have a least privileged model in which each person in

your organization has the minimum amount of privilege needed to do his or her job.

So, for example, maybe I want to define

an InstanceOperator Role to allow

some users to start and stop Compute Engine and virtual machines,

but not reconfigure them.

Custom roles allow me to do that.

A couple cautions about custom roles.

First, you have to decide to use custom roles.

You'll need to manage their permissions.

Some companies decide they'd rather stick with the predefined roles.

Second, custom roles can only be used at the project or organization levels.

They can't be used at the folder level.

What if you want to give permissions to a Compute Engine virtual machine,

rather then to a person?

Then you would use a service account.

For instance, maybe you have an application running in

a virtual machine that needs to store data in Google Cloud Storage,

but you don't want to let just anyone on the Internet have access to that data,

only that virtual machine.

So, you'd create a service account to authenticate your VM to cloud storage.

Service accounts are named with an email address.

But instead of passwords,

they use cryptographic keys to access resources.

In this simple example,

a service account has been granted Compute Engine's InstanceAdmin Role.

This would allow an application running in a VM with that service account to create,

modify, and delete other VMs.

Incidentally, service accounts need to be managed, too.

For example, maybe Alice needs to manage what can be act as a given service account,

while Bob just needs to be able to view them.

Fortunately, in addition to being an identity,

a service account is also a resource.

So it can have IAM policies on its own attached to it.

For instance, Alice can have an editor role in

a service account and Bob can have the viewer role.

This is just like granting roles for any other GCP resource.

You can grant different groups of VMs in your project different identities.

This makes it easier to manage different permissions for each group.

You can also change the permissions of

the service accounts without having to recreate the VMs.

Here's a more complex example.

Say you have an application that's implemented

across a group of Compute Engine virtual machines.

One component of your application needs to have an editor role on another project,

but another component doesn't.

So you would create two different service accounts,

one for each subgroup of virtual machines.

Only the first service account has privilege on the other project.

That reduces the potential impact of

a miscoded application or a compromised virtual machine.

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