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From "John Zhuge (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11418) HttpFS should support old SSL clients
Date Wed, 15 Feb 2017 20:03:41 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11418?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

John Zhuge updated HDFS-11418:
------------------------------
    Attachment: HDFS-11418.branch-2.001.patch

Patch branch-2.001
* Add env HTTPFS_SSL_CIPHERS, default to a list of selected ciphers
* Configure Tomcat to accept a list of ciphers

TODO
* Discuss Allen's idea of strong security by default

Testing done
* hadoop-hdfs-httpfs unit tests
* Verify HTTPFS_SSL_CIPHERS value on stdout during httpfs startup
* Run https://github.com/jzhuge/hadoop-bats-tests/blob/master/httpfs.bats in insecure, SSL,
and SSL+Kerberos single node setup
* Sslcan result should include only listed ciphers
* On Centos 6.6, run the following curl command. Expect {{NSS error -12286}} without the fix.
{noformat}
curl -v -k --negotiate -u: -sS 'https://HTTPFS_HOST:14000/webhdfs/v1/?op=liststatus'
{noformat}

> HttpFS should support old SSL clients
> -------------------------------------
>
>                 Key: HDFS-11418
>                 URL: https://issues.apache.org/jira/browse/HDFS-11418
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: httpfs
>    Affects Versions: 2.8.0, 2.7.4, 2.6.6
>            Reporter: John Zhuge
>            Assignee: John Zhuge
>            Priority: Minor
>         Attachments: HDFS-11418.branch-2.001.patch
>
>
> HADOOP-13812 upgraded Tomcat to 6.0.48 which filters weak ciphers. Old SSL clients such
as curl stop working. The symptom is {{NSS error -12286}} when running {{curl -v}}.
> Instead of forcing the SSL clients to upgrade, we can configure Tomcat to explicitly
allow enough weak ciphers so that old SSL clients can work.



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