Set up authentication and single sign-on for Astro

This guide provides the steps for integrating identity providers on Astro to enable Single Sign-On (SSO) for your users. After you complete the integration for your organization:

• Users will automatically be authenticated to Astro if they're already logged in to your identity provider (IdP).
• Users will no longer have to repeatedly login and remember credentials for their account.
• You will have complete ownership over credential configuration and management on Astro.
• You can enforce multi-factor authentication (MFA) for users.
• You can use services such as Adaptive Authentication and Conditional Access to create advanced access policies that enforce trusted IP ranges or limit access to authorized devices.

To manage Organization users after you have configured SSO, see Manage Organization users.

In addition to SSO authorization, there are 3 ways that users can to authenticate to Astro:

• Basic authentication (username and password)
• Google social login
• GitHub social login

To limit users to only a subset of these options, see Restrict authentication options.

Supported SSO identity providers

Single Sign On (SSO) authorization allows users to log in using their company credentials, managed through an IdP. This provides a streamlined login experience for your Astro users, as they are able to leverage the same credentials across multiple applications. In addition, this provides improved security and control for organizations to manage access from a single source. Astro supports integrations with the following IdPs:

• Microsoft Entra ID
• Okta
• OneLogin
• Ping Identity

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You can configure multiple SSO connections for a single Organization. This requires having a unique verified domain for each new SSO connection.

Configure your SSO identity provider

At a high level, to configure an SSO identity provider (IdP) you will:

1. Create a connection between Astro and your IdP.
2. Map a managed domain to your SSO connection.
3. Invite users to Astro through your IdP.

Okta

This section provides setup steps for setting up Okta as your IdP on Astro. After completing this setup, all users in your organization can use Okta to log in to Astro.

Supported Okta features

The Astro integration with Okta supports the following authentication options:

• IdP-initiated SSO
• Service provider (SP)-initiated SSO
• Just-In-Time provisioning

Prerequisites

• Organization Owner privileges in the Organization you're configuring.
• An Okta account with administrative access.
• At least one verified domain.

Step 1: Create a SAML-based connection to Okta

To set up Okta as your IdP, you will create a Security Assertion Markup Language (SAML) connection to Okta.

1. In the Astro UI, click your Workspace name in the upper left corner, click Organization Settings, then click Authentication.

2. In the SSO Configuration menu, click Configure SSO.

3. Configure the following values for your connection:

   • Connection type: Select SAML.
   • SSO Domain(s): Enter the verified domain(s) that you want to map to Okta.
   • Automatic Membership: Set the default role for users who join your Organization through Okta and without an explicit invite from Astro.

4. Copy the Connection Name.

5. Open a new tab and go to Okta. In the Okta Admin Console, go to Applications and click Browse App Catalogue. Then, search the catalogue, select the Astro app integration, and click Add Integration. After configuring a label for the integration, the application appears in Applications.

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When you create your application, Okta automatically maps the following attributes to Astro user account values:

Attribute	Value
email	user.email
firstName	user.firstName
lastName	user.lastName
name	user.displayName

6. Open the Astro application you just configured, click Sign On, then click Edit. Configure the following values:

   • Connection Name: Enter the Connection Name you copied from the Astro UI.
   • Application username format: Email.
   • Update application username on: Create and update.

7. Copy the values for Sign-on URL, Sign out URL, and X.509 Certificate from the Metadata Details section.

8. Assign yourself to the Astro app integration from Okta. See Assign an app integration to a user.

9. Return to the Astro UI. In the configuration screen for your SAML connection, configure the following values:

   • Identity Provider Single Sign-on URL: Enter your Single Sign-on URL.
   • Identity Provider Sign-out URL: Enter your Single Sign-out URL.
   • X.509 Certificate: Enter your X.509 Certificate.

10. Click Create. Your Okta integration appears as an entry in SSO Configuration.

11. In SSO Configuration, click Activate. You are redirected to Okta to test your configuration. After you have successfully authenticated, you are redirected to Astro.

12. Click Activate SSO.

Step 2: Copy your SSO bypass link

warning

Do not share your single sign-on (SSO) bypass link. With an SSO bypass link, anyone with an email and a password can log in to Astro. Astronomer recommends periodically regenerating the link from the Settings tab in the Astro UI.

An SSO bypass link allows you to authenticate to your Organization without using SSO. This link should be used to access your Organization only when you can't access Astro due to an issue your identity provider.

1. In the Astro UI, click your Workspace name in the upper left corner, click Organization Settings, then click Authentication.

2. In the SSO Bypass Link field, click Copy. Save this link for when you need to log in to Astro without using SSO.

If you don't want to maintain an SSO bypass link, click Delete. You can always regenerate a link if you need one in the future.

Step 3: Assign users to your Okta application

On the page for your Okta app integration, open the Assignments tab. Ensure that all users who will use Astro are assigned to the integration. For more information, see Assign applications to users.

Step 4: (Optional) Configure SCIM provisioning

SCIM provisioning allows you to manage Astro users from your identity provider platform. See Set up SCIM provisioning for setup steps.

Microsoft Entra ID

This section provides setup steps for setting up Microsoft Entra ID as your IdP on Astro. After completing this setup, your organization's users can use Microsoft Entra ID to log in to Astro.

Prerequisites

To integrate Azure as your IdP for Astro you must have:

• An Azure subscription.
• Cloud Application Administrator permissions on Microsoft Entra ID.
• Organization Owner permissions in the Organization you're configuring.
• At least one verified domain.

Step 1: Register Astro as an application on Azure

Follow the Microsoft documentation to add Astro from the gallery to your list of managed SaaS applications.

Step 2: Configure SSO on Astro

1. In the Astro UI, click your Workspace name in the upper left corner, click Organization Settings, then click Authentication.

2. In the SSO Configuration menu, click Configure SSO.

3. Configure the following values for your connection:

   • Connection Type: Select SAML.
   • SSO Domain(s): Enter the verified domain(s) that you want to map to Microsoft Entra ID.
   • Automatic Membership: Set the default role for users who join your Organization through Microsoft Entra ID and without an explicit invite from Astro.

4. Copy the Single Sign-On URL and Audience URI (SP Entity ID) for Step 3.

5. Keep this configuration window open. You'll return to it in Step 4.

Step 3: Configure SSO on Azure

In a new tab, open the Microsoft Entra admin center and follow the steps in Microsoft documentation to configure Microsoft Entra SSO for Astro. In the Basic SAML Configuration section of your configuration, set the following values:

• Identifier (Entity ID): Enter the value for Audience URI (SP ENTITY ID) you copied in the previous step.
• Reply URL (Assertion Consumer Service URL): Enter the value for Single Sign-On URL you copied in the previous step.

After you complete the configuration, download the PEM certificate from the SAML Signing Certificate section for Step 4.

Step 4: Finalize the SSO connection in Astro

1. Return to the Astro UI. In the configuration screen for your SSO connection, configure the following values:

   • X.509 Certificate: Enter the PEM certificate you downloaded in Step 3.
   • Identity Provider Single Sign-on URL: Enter the URL you copied in Step 3.

2. Click Create. Your Entra ID integration appears as an entry in SSO Configuration.

Step 5: Copy your SSO bypass link

warning

Do not share your single sign-on (SSO) bypass link. With an SSO bypass link, anyone with an email and a password can log in to Astro. Astronomer recommends periodically regenerating the link from the Settings tab in the Astro UI.

An SSO bypass link allows you to authenticate to your Organization without using SSO. This link should be used to access your Organization only when you can't access Astro due to an issue your identity provider.

1. In the Astro UI, click your Workspace name in the upper left corner, click Organization Settings, then click Authentication.

2. In the SSO Bypass Link field, click Copy. Save this link for when you need to log in to Astro without using SSO.

If you don't want to maintain an SSO bypass link, click Delete. You can always regenerate a link if you need one in the future.

Step 6: Assign users to your Microsoft Entra ID application

Follow Microsoft documentation to assign users from your organization to your new application.

When a user assigned to the application accesses Astro, they will be brought automatically to Microsoft Entra ID after entering their email in the Astro UI.

OneLogin

This section provides setup steps for setting up OneLogin as your IdP on Astro. After completing this setup, your organization's users can use OneLogin to log in to Astro.

Prerequisites

• A OneLogin account with administrative access.
• Organization Owner privileges in the Organization you're configuring.
• At least one verified domain.

Step 1: Create a SAML-based connection to OneLogin

To set up OneLogin as your IdP, you will create a Security Assertion Markup Language (SAML) connection to OneLogin.

1. In the Astro UI, click your Workspace name in the upper left corner, click Organization Settings, then click Authentication.

2. In the SSO Configuration menu, click Configure SSO.

3. Configure the following values for your connection:

   • Connection Type: Select SAML.
   • SSO Domain(s): Enter the verified domain(s) that you want to map to OneLogin.
   • Automatic Membership: Set the default role for users who join your Organization through OneLogin and without an explicit invite from Astro.

4. Copy the Single Sign-On URL and Audience URI (SP ENTITY ID) for Step 8.

5. Open a new tab and go to OneLogin. In the OneLogin administrator dashboard, click Applications > Applications and then click Add App.

6. In the Search field, enter SAML Custom, and then select SAML Custom Connector (Advanced).

7. In the Display Name field, enter Astro and then click Save.

8. Click Configuration in the left menu and complete the following fields:

   • Audience (EntityID): <your-audience-uri>
   • ACS (Consumer) URL Validator: <your-sso-url>
   • ACS (Consumer) URL: <your-sso-url>

9. Select the Sign SLO Request and Sign SLO Response checkboxes. Then, click Save.

10. Click Parameters in the left menu, and add the following four parameters, using the same capitalization shown in the Value column:

    Field name	Value
    email	Email
    firstName	First Name
    lastName	Last Name
    name	Name

    Select the Include in SAML assertion checkbox for every parameter that you add and then click Save.

11. Click SSO in the left menu, click View Details below the X.509 Certificate field and then click Download.

12. Select SHA-256 in the SAML Signature Algorithm list.

13. Copy and save the value displayed in the SAML 2.0 Endpoint (HTTP) field.

14. Assign yourself to the Astro app integration from OneLogin. See Assigning apps to users.

15. Return to the Astro UI. In the configuration screen for your SAML connection, configure the following values:

    • Identity Provider Single Sign-on URL: Enter the value you copied from SAML 2.0 Endpoint (HTTP).
    • X.509 Certificate: Enter the X.509 Certificate that you downloaded.

16. Click Create. Your OneLogin integration appears as an entry in SSO Configuration.

17. In SSO Configuration, click Activate. You are redirected to OneLogin to test your configuration. After you have successfully authenticated, you are redirected to Astro. Then, click Activate SSO.

Step 2: Copy your SSO bypass link

warning

Do not share your single sign-on (SSO) bypass link. With an SSO bypass link, anyone with an email and a password can log in to Astro. Astronomer recommends periodically regenerating the link from the Settings tab in the Astro UI.

An SSO bypass link allows you to authenticate to your Organization without using SSO. This link should be used to access your Organization only when you can't access Astro due to an issue your identity provider.

1. In the Astro UI, click your Workspace name in the upper left corner, click Organization Settings, then click Authentication.

2. In the SSO Bypass Link field, click Copy. Save this link for when you need to log in to Astro without using SSO.

If you don't want to maintain an SSO bypass link, click Delete. You can always regenerate a link if you need one in the future.

Step 3: Assign users to your OneLogin Astro application

1. In the OneLogin administrator dashboard, click Applications > Applications and then click Astro.

2. Click Users in the left menu.

3. Make sure that all users who need to use Astro are assigned to the Astronomer application.

Ping Identity

This section provides setup steps for setting up Ping Identity as your IdP on Astro. After completing this setup, your organization's users can use Ping Identity to log in to Astro.

Prerequisites

• A Ping Identity account with administrative access.
• Organization Owner privileges in the Organization you're configuring.
• At least one verified domain.

Step 1: Configure Ping Identity

1. In the Astro UI, click your Workspace name in the upper left corner, click Organization Settings, then click Authentication.

2. In the SSO Configuration menu, click Configure SSO.

3. Configure the following values for your connection:

   • Connection type: Select SAML.
   • SSO Domain(s): Enter the verified domain(s) that you want to map to Ping Identity.
   • Automatic Membership: Set the default role for users who join your Organization through Ping Identity and without an explicit invite from Astro.

4. Copy the Single Sign-On URL and Audience URI (SP ENTITY ID) for Step 8.

5. Open a new tab and go to PingIdentity. In the PingIdentity Administrator Console, click Connections in the left pane, and then click the + icon next to Applications.

6. In the Application Name field, enter Astro. Optionally, add a description and an icon.

7. Click SAML Application, and then click Configure.

8. Click Manually Enter and then complete the following fields:

   • ACS URLs: <your-sso-url>
   • Entity ID: <your-audience-uri>

9. Click Save.

10. Click Edit on the Overview page, and then enter <your-sso-url> in the Sign on URL field. Then, click Save.

11. Click the Configuration tab, and then click Edit.

12. Select Sign Assertion & Response and confirm RSA_SHA256 is selected in the Signing Algorithm list. Then, click Save.

13. On the Configuration page, click Download Signing Certificate and select X509 PEM (.crt) to download the X.509 certificate for your application.

14. Copy and save the URL in the Single Sign-on Service field.

15. Click the Attribute Mappings tab, click Edit, and add the following attributes, using the capitalization shown in both columns:

    Astronomer	PingOne
    saml_subject	User ID
    email	Email Address
    firstName	Given Name
    lastName	Family Name
    name	Formatted

16. Click Save.

17. (Optional) If you configured your application on a PingFederate server, enable the Include the certificate in the signature <KeyInfo> element setting for your server. See Ping documentation.

18. Click the toggle in the top right to enable the application.

19. Assign yourself to Astro from Ping Identity. See Editing a user.

20. Return to the Astro UI. In the configuration screen for your SAML connection, configure the following values:

    • Identity Provider Single Sign-on URL: Enter the value you copied from the Single Sign-on Service field.
    • X.509 Certificate: Enter the X.509 Certificate that you downloaded.

21. Click Create. Your Ping Identity integration appears as an entry in SSO Configuration.

22. In SSO Configuration, click Activate. You are redirected to Ping Identity to test your configuration. After you have successfully authenticated, you are redirected to Astro.

23. Click Activate SSO.

Step 2: Copy your SSO bypass link

warning

Do not share your single sign-on (SSO) bypass link. With an SSO bypass link, anyone with an email and a password can log in to Astro. Astronomer recommends periodically regenerating the link from the Settings tab in the Astro UI.

An SSO bypass link allows you to authenticate to your Organization without using SSO. This link should be used to access your Organization only when you can't access Astro due to an issue your identity provider.

1. In the Astro UI, click your Workspace name in the upper left corner, click Organization Settings, then click Authentication.

2. In the SSO Bypass Link field, click Copy. Save this link for when you need to log in to Astro without using SSO.

If you don't want to maintain an SSO bypass link, click Delete. You can always regenerate a link if you need one in the future.

Step 3: Assign users to your Ping Identity application

Assign users from your organization to your new application. See Managing user groups.

When a user assigned to the application accesses Astro, they are automatically signed in to Ping Identity after entering their email in the Astro UI.

Advanced setup

Configure just-in-time provisioning

Astro supports just-in-time provisioning by default for all single sign-on (SSO) integrations. This means that if someone without an Astro account tries logging into Astro with an email address from a domain that you manage, they are automatically granted a default role in your Organization without needing an invite. Users with emails outside of this domain need to be invited to your Organization to access it.

To enable or disable just-in-time provisioning:

1. In the Astro UI, click your Workspace name in the upper left corner, click Organization Settings, then click Authentication.

2. In the SSO Configuration menu, click the pencil icon to edit your SSO connection.

3. In Automatic Membership, select the default Organization role for users who log in to Astro for the first time through your identity provider. To disable just-in-time provisioning, select Disabled.

Restrict authentication options

By default, users can choose any of the available authentication methods when logging into Astro. You can remove specific authentication options, such as GitHub or Google, so that users can use only the methods that your Organization wants to support, like your third party identity provider.

1. In the Astro UI, click your Workspace name in the upper left corner, click Organization Settings, then click Authentication.
2. In the Advanced Settings menu, click Allow only Single Sign-On (SSO).

Regenerate an SSO bypass link

Regenerating your SSO bypass link voids your existing SSO bypass link so that any former users with the existing link can't log in to Astro.

1. In the Astro UI, click the Settings tab.

2. Click Regenerate to create a new bypass link and void the old one.