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List:       hadoop-dev
Subject:    [jira] [Created] (HADOOP-18585) DataNode's internal infoserver redirects with http scheme, not https
From:       "YUBI LEE (Jira)" <jira () apache ! org>
Date:       2022-12-24 9:29:00
Message-ID: JIRA.13515410.1671874102000.235289.1671874140008 () Atlassian ! JIRA
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YUBI LEE created HADOOP-18585:
---------------------------------

             Summary: DataNode's internal infoserver redirects with http scheme, not \
https when https enabled.  Key: HADOOP-18585
                 URL: https://issues.apache.org/jira/browse/HADOOP-18585
             Project: Hadoop Common
          Issue Type: Bug
    Affects Versions: 3.3.4
            Reporter: YUBI LEE


After HADOOP-16314, WebServlet.java was added. On WebServlet#doGet, it redirects '/' \
to '/index.html'. However, if a client connects to DataNode with https scheme, it \
fails to connect because it responds 302 with Location header which has http scheme.

(Hostname is modified.)

{code:java}
$ curl https://dn1.example.com:50475/ -v 2>&1 | grep Location
< Location: http://dn1.example.com:50475/index.html
{code}

I can't ensure that which solution is the best between:

- Use DefaultServlet instead of WebServlet. DataNode can answer with index.html when \
                accessed in '/'.
- According to "dfs.http.policy" in hdfs-site.xml, run internal infoserver as https \
or http server each.




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