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Posted to common-commits@hadoop.apache.org by st...@apache.org on 2023/02/17 16:31:54 UTC
[hadoop] branch branch-3.3.5 updated: HADOOP-18627. Add stronger wording in 'secure mode' introduction (#5406)
This is an automated email from the ASF dual-hosted git repository.
stevel pushed a commit to branch branch-3.3.5
in repository https://gitbox.apache.org/repos/asf/hadoop.git
The following commit(s) were added to refs/heads/branch-3.3.5 by this push:
new 274f91a3259 HADOOP-18627. Add stronger wording in 'secure mode' introduction (#5406)
274f91a3259 is described below
commit 274f91a325998e23bb4626a974e0dbfd4bc6e248
Author: Arnout Engelen <ar...@engelen.eu>
AuthorDate: Fri Feb 17 17:30:41 2023 +0100
HADOOP-18627. Add stronger wording in 'secure mode' introduction (#5406)
Make it more clear that when deploying Hadoop 'secure mode' is generally not optional.
Contributed by Arnout Engelen
---
hadoop-common-project/hadoop-common/src/site/markdown/SecureMode.md | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/SecureMode.md b/hadoop-common-project/hadoop-common/src/site/markdown/SecureMode.md
index c36027794a2..45b0f1c83b7 100644
--- a/hadoop-common-project/hadoop-common/src/site/markdown/SecureMode.md
+++ b/hadoop-common-project/hadoop-common/src/site/markdown/SecureMode.md
@@ -20,7 +20,9 @@ Hadoop in Secure Mode
Introduction
------------
-This document describes how to configure authentication for Hadoop in secure mode. When Hadoop is configured to run in secure mode, each Hadoop service and each user must be authenticated by Kerberos.
+In its default configuration, we expect you to make sure attackers don't have access to your Hadoop cluster by restricting all network access. If you want any restrictions on who can remotely access data or submit work, you MUST secure authentication and access for your Hadoop cluster as described in this document.
+
+When Hadoop is configured to run in secure mode, each Hadoop service and each user must be authenticated by Kerberos.
Forward and reverse host lookup for all service hosts must be configured correctly to allow services to authenticate with each other. Host lookups may be configured using either DNS or `/etc/hosts` files. Working knowledge of Kerberos and DNS is recommended before attempting to configure Hadoop services in Secure Mode.
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