[jira] [Commented] (HADOOP-12565) Setup passphraseless SSH does not work on all systems

["Akira AJISAKA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-12565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15037193#comment-15037193 ] 

Akira AJISAKA commented on HADOOP-12565:
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Thanks [~liuml07] for taking this issue. +1, I'm okay with the patch.
bq. Is it OK by not suggesting the type of key to create? I think the default one will work just fine.
Now the default key type is RSA, so the document is valid if not suggesting the type. However, when the default is changed from RSA, we need to edit the document to change the name of the public & private key as well. Therefore I'm thinking we should suggest the type.

> Setup passphraseless SSH does not work on all systems
> -----------------------------------------------------
>
>                 Key: HADOOP-12565
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12565
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: documentation
>    Affects Versions: 2.7.1
>         Environment: Linux (Gentoo)
>            Reporter: Alexander Veit
>            Assignee: Mingliang Liu
>            Priority: Minor
>         Attachments: HADOOP-12565.000.patch
>
>
> http://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/SingleCluster.html
> suggests to create a DSA key to ssh to localhost. However DSA is going to be deprecated[1], and ssh to localhost with DSA actually does not work on all systems. I suggest to replace DSA with RSA, ECDSA, or ED25519.
> Ref.:
> [1] http://comments.gmane.org/gmane.linux.gentoo.devel/96896



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