Add TiDB Dashboard session docs (#6058)

TOC.md

@@ -484,6 +484,9 @@
         + [Use Diagnostics](/dashboard/dashboard-diagnostics-usage.md)
       + [Search Logs Page](/dashboard/dashboard-log-search.md)
       + [Profile Instances Page](/dashboard/dashboard-profiling.md)
+      + Session Management and Configuration
+        + [Share Session](/dashboard/dashboard-session-share.md)
+        + [Configure SSO](/dashboard/dashboard-session-sso.md)
       + [FAQ](/dashboard/dashboard-faq.md)
   + CLI
     + [tikv-ctl](/tikv-control.md)

dashboard/dashboard-session-share.md

@@ -0,0 +1,60 @@
+---
+title: Share TiDB Dashboard Sessions
+summary: Learn how to share the current TiDB Dashboard session to other users.
+---
+
+# Share TiDB Dashboard Sessions
+
+> **Note:**
+>
+> This feature is available only in clusters of v4.0.6 or later. 
+
+You can share the current session of the TiDB Dashboard to other users so that they can access and operate the TiDB Dashboard without entering the user password.
+
+## Steps for the Inviter
+
+1. Sign into TiDB Dashboard.
+
+2. Click the username in the left sidebar to access the configuration page.
+
+3. Click **Share Current Session**.
+
+    ![Sample Step](/media/dashboard/dashboard-session-share-settings-1.png)
+
+   > **Note:**
+   >
+   > For security reasons, the shared session cannot be shared again.
+
+4. Adjust sharing settings in the popup dialog:
+
+   - Expire in: How long the shared session will be effective. Signing out of the current session does not affect the effective time of the shared session.
+
+   - Share as read-only privilege: The shared session only permits read operations but not write operations (such as modifying configurations). This feature is available only in clusters of v4.0.14 or later.
+
+5. Click **Generate Authorization Code**.
+
+   ![Sample Step](/media/dashboard/dashboard-session-share-settings-2.png)
+
+6. Provide the generated **Authorization Code** to the user to whom you want to share the session.
+
+   ![Sample Step](/media/dashboard/dashboard-session-share-settings-3.png)
+
+   > **Warning:**
+   >
+   > Keep your authorization code secure and do not send it to anyone who is untrusted. Otherwise, they will be able to access and operate TiDB Dashboard without your authorization.
+
+## Steps for the Invitee
+
+1. On the sign-in page of TiDB Dashboard, click **Use Alternative Authentication**.
+
+   ![Sample Step](/media/dashboard/dashboard-session-share-signin-1.png)
+
+2. Click **Authorization Code** to use it to sign in.
+
+   ![Sample Step](/media/dashboard/dashboard-session-share-signin-2.png)
+
+3. Enter the authorization code you have received from the inviter.
+
+4. Click **Sign In**.
+
+   ![Sample Step](/media/dashboard/dashboard-session-share-signin-3.png)

dashboard/dashboard-session-sso.md

@@ -0,0 +1,155 @@
+---
+title: Configure SSO for TiDB Dashboard
+summary: Learn how to enable SSO to sign into TiDB Dashboard.
+---
+
+# Configure SSO for TiDB Dashboard
+
+TiDB Dashboard supports [OIDC](https://openid.net/connect/)-based Single Sign-On (SSO). After enabling the SSO feature of TiDB Dashboard, the configured SSO service is used for your sign-in authentication and then you can access TiDB Dashboard without entering the SQL user password.
+
+## Configure OIDC SSO
+
+> **Note:**
+>
+> This feature is available only in clusters of v4.0.14 or later. 
+
+### Enable SSO
+
+1. Sign into TiDB Dashboard.
+
+2. Click the username in the left sidebar to access the configuration page.
+
+3. In the **Single Sign-On** section, select **Enable to use SSO when sign into TiDB Dashboard**.
+
+4. Fill the **OIDC Client ID** and the **OIDC Discovery URL** fields in the form.
+
+   Generally, you can obtain the two fields from the SSO service provider:
+
+   - OIDC Client ID is also called OIDC Token Issuer.
+   - OIDC Discovery URL is also called OIDC Token Audience.
+
+5. Click **Authorize Impersonation** and input the SQL password.
+
+   TiDB Dashboard will store this SQL password and use it to impersonate a normal SQL sign-in after an SSO sign-in is finished.
+
+   ![Sample Step](/media/dashboard/dashboard-session-sso-enable-1.png)
+
+   > **Note:**
+   >
+   > The password you have entered will be encrypted and stored. The SSO sign-in will fail after the password of the SQL user is changed. In this case, you can re-enter the password to bring SSO back.
+
+6. Click **Authorize and Save**.
+
+   ![Sample Step](/media/dashboard/dashboard-session-sso-enable-2.png)
+
+7. Click **Update** (Update) to save the configuration.
+
+   ![Sample Step](/media/dashboard/dashboard-session-sso-enable-3.png)
+
+Now SSO sign-in has been enabled for TiDB Dashboard.
+
+> **Note:**
+>
+> For security reasons, some SSO services require additional configuration for the SSO service, such as the trusted sign-in and sign-out URIs. Refer to the documentation of the SSO service for further information.
+
+### Disable SSO
+
+You can disable the SSO, which will completely erase the stored SQL password:
+
+1. Sign into TiDB Dashboard.
+
+2. Click the username in the left sidebar to access the configuration page.
+
+3. In the **Single Sign-On** section, deselect **Enable to use SSO when sign into TiDB Dashboard**.
+
+4. Click **Update** (Update) to save the configuration.
+
+   ![Sample Step](/media/dashboard/dashboard-session-sso-disable.png)
+
+### Re-enter the password after a password change
+
+The SSO sign-in will fail once the password of the SQL user is changed. In this case, you can bring back the SSO sign-in by re-entering the SQL password:
+
+1. Sign into TiDB Dashboard.
+
+2. Click the username in the left sidebar to access the configuration page.
+
+3. In the **Single Sign-On** section, Click **Authorize Impersonation** and input the updated SQL password.
+
+   ![Sample Step](/media/dashboard/dashboard-session-sso-reauthorize.png)
+
+4. Click **Authorize and Save**.
+
+## Sign in via SSO
+
+Once SSO is configured for TiDB Dashboard, you can sign in via SSO by taking following steps:
+
+1. In the sign-in page of TiDB Dashboard, click **Sign in via Company Account**.
+
+   ![Sample Step](/media/dashboard/dashboard-session-sso-signin.png)
+
+2. Sign into the system with SSO service configured.
+
+3. You are redirected back to TiDB Dashboard to finish the sign-in.
+
+## Example: Use Okta for TiDB Dashboard SSO sign-in
+
+[Okta](https://www.okta.com/) is an OIDC SSO identity service, which is compatible with the SSO feature of TiDB Dashboard. The steps below demonstrate how to configure Okta and TiDB Dashboard so that Okta can be used as the TiDB Dashboard SSO provider.
+
+### Step 1: Configure Okta
+
+First, create an Okta Application Integration to integrate SSO.
+
+1. Access the Okta administration site.
+
+2. Navigate from the left sidebar **Applications** > **Applications**.
+
+3. Click **Create App Integration**。
+
+   ![Sample Step](/media/dashboard/dashboard-session-sso-okta-1.png)
+
+4. In the poped up dialog, choose **OIDC - OpenID Connect** in **Sign-in method**.
+
+5. Choose **Single-Page Application** in **Application Type**.
+
+6. Click the **Next** button.
+
+   ![Sample Step](/media/dashboard/dashboard-session-sso-okta-2.png)
+
+7. Fill **Sign-in redirect URIs** as follows:
+
+   ```
+   http://DASHBOARD_IP:PORT/dashboard/?sso_callback=1
+   ```
+
+   Substitute `DASHBOARD_IP:PORT` with the actual domain (or IP address) and port that you use to access the TiDB Dashboard in the browser.
+
+8. Fill **Sign-out redirect URIs** as follows:
+
+   ```
+   http://DASHBOARD_IP:PORT/dashboard/
+   ```
+
+   Similarly, substitute `DASHBOARD_IP:PORT` with the actual domain (or IP address) and port.
+
+   ![Sample Step](/media/dashboard/dashboard-session-sso-okta-3.png)
+
+9. Configure what type of users in your organization is allowed for SSO sign-in in the **Assignments** field, and then click **Save** to save the configuration.
+
+   ![Sample Step](/media/dashboard/dashboard-session-sso-okta-4.png)
+
+### Step 2: Obtain OIDC information and fill in TiDB Dashboard
+
+1. In the Application Integration just created in Okta, click **Sign On**.
+
+   ![Sample Step 1](/media/dashboard/dashboard-session-sso-okta-info-1.png)
+
+2. Copy values of the **Issuer** and **Audience** fields from the **OpenID Connect ID Token** section.
+
+   ![Sample Step 2](/media/dashboard/dashboard-session-sso-okta-info-2.png)
+
+3. Open the TiDB Dashboard configuration page, fill **OIDC Client ID** with **Issuer** obtained from the last step and fill **OIDC Discovery URL** with **Audience**. Then finish the authorization and save the configuration. For example:
+
+   ![Sample Step 3](/media/dashboard/dashboard-session-sso-okta-info-3.png)
+
+Now TiDB Dashboard has been configured to use Okta SSO for sign-in.