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https://issues.apache.org/jira/browse/HADOOP-16023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16761308#comment-16761308
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Eric Yang commented on HADOOP-16023:
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Good to know JDK parser is working as designed. Is this the format that will
be supported?
{code}
EXAMPLE.COM = {
auth_to_local = RULE:[1:$1@$0](.*@.*EXAMPLE.COM)s/@.*//
auth_to_local = DEFAULT
}
EXAMPLE2.COM = {
auth_to_local = RULE:[1:$1@$0](.*@.*EXAMPLE2.COM)s/@.*//
auth_to_local = DEFAULT
}
{code}
> Support system /etc/krb5.conf for auth_to_local rules
> -----------------------------------------------------
>
> Key: HADOOP-16023
> URL: https://issues.apache.org/jira/browse/HADOOP-16023
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Bolke de Bruin
> Assignee: Bolke de Bruin
> Priority: Major
> Labels: security
>
> Hadoop has long maintained its own configuration for Kerberos' auth_to_local
> rules. To the user this is counter intuitive and increases the complexity of
> maintaining a secure system as the normal way of configuring these
> auth_to_local rules is done in the site wide krb5.conf usually /etc/krb5.conf.
> With HADOOP-15996 there is now support for configuring how Hadoop should
> evaluate auth_to_local rules. A "system" mechanism should be added.
> It should be investigated how to properly parse krb5.conf. JDK seems to be
> lacking as it is unable to obtain auth_to_local rules due to a bug in its
> parser. Apache Kerby has an implementation that could be used. A native (C)
> version is also a possibility.
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