Single sign-on (SSO) is a tool that solves fundamental problems, especially in midsize and large organizations with lots of users.
End users do not want to have to remember too many username and password combinations. IT administrators do not want to have to create and manage too many different login credentials across enterprise systems. It is a far more manageable and secure approach to federate access and authentication through a single identity provider (IdP).
As today’s enterprises rely on a wide range of cloud services and legacy systems, they have increasingly adopted SSO via an IdP as a best practice for IT management. All access and authentication essentially flows through the IdP wherever it is supported. Employees do not have to remember multiple usernames and passwords to access the tools they need to do their jobs. Just as importantly, IT teams prevent an administrative headache. They manage a single identity per user, which makes tasks like removing access when a person leaves the organization much simpler and less prone to error.
The same practice extends to AWS. As we see more customers migrate to the cloud platform, we hear a growing need for the ability to federate access to Amazon Redshift when they use it for their data warehouse needs.
Database administration used to be a more complex effort. Administrators had to figure out which groups a user belonged to, which objects a user or group were authorized to use, and other needs—in manual fashion. These user and group lists—and their permissions—were traditionally managed within the database itself, and there was often a lot of drift between the database and the company directory.
Amazon Redshift administrators face similar challenges if they opt to manage everything within Redshift itself. There is a better way, though. They can use an enterprise IdP to federate Redshift access, managing users and groups within the IdP and passing the credentials to Amazon Redshift at login.
We increasingly hear from our clients, “We use Azure Active Directory (AAD) for identity management—can we essentially bring it with us as our IdP to Amazon Redshift?”
They want to use AAD with Redshift the way they use it elsewhere, to manage their users and groups in a single place to reduce administrative complexity. With Redshift, specifically, they also want to be able to continue managing permissions for those groups in the data warehouse itself. The good news is you can do this and it can be very beneficial.
Without a solution like this, you would approach database administration in one of two alternative ways:
- You would provision and manage users using AWS Identity and Access Management (IAM). This means, however, you will have another identity provider to maintain—credentials, tokens, and the like—separate from an existing IdP like AAD.
- You would do all of this within Redshift itself, creating users (and their credentials) and groups and doing database-level management. But this creates similar challenges to legacy database management, and when you have thousands of users, it simply does not scale.
Our technical white paper outlines how to federate access to Amazon Redshift using Azure Active Directory as your IdP, passing user and group information through to the database at login.
-Rob Whelan, Data & Analytics Practice Director