jerqi commented on code in PR #9565:
URL: https://github.com/apache/gravitino/pull/9565#discussion_r2655044008
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docs/flink-connector/flink-authentication-with-gravitino.md:
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@@ -0,0 +1,37 @@
+---
+title: "Flink authentication with Gravitino server"
+slug: /flink-connector/flink-authentication
+keyword: flink connector authentication oauth2 kerberos
+license: "This software is licensed under the Apache License version 2."
+---
+
+## Overview
+
+Flink connector supports `simple`, `oauth2`, and `kerberos` authentication
when accessing the Gravitino server.
+
+| Property | Type | Default Value | Description
| Required | Since Version |
+|----------------------------|--------|---------------|------------------------------------------------------------------------------------------------------------------------------------------|----------|---------------|
+| gravitino.client.auth.type | string | (none) | When explicitly set,
only `oauth` is supported. If unset, Flink selects Kerberos or simple
authentication based on its security settings. | No | 1.2.0 |
+
+## Simple mode
+
+In simple mode, the username originates from Flink. The resolution order is:
+1. `HADOOP_USER_NAME` environment variable
+2. The logged-in OS user
+
+## OAuth2 mode
+
+In OAuth2 mode, configure the following settings to fetch an OAuth2 token to
access the Gravitino server:
Review Comment:
Done.
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