[jira] [Assigned] (HDDS-2895) Generate only the required keytabs for docker based secure tests

["Marton Elek (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDDS-2895?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Marton Elek reassigned HDDS-2895:
---------------------------------

    Assignee: Marton Elek

> Generate only the required keytabs for docker based secure tests
> ----------------------------------------------------------------
>
>                 Key: HDDS-2895
>                 URL: https://issues.apache.org/jira/browse/HDDS-2895
>             Project: Hadoop Distributed Data Store
>          Issue Type: Improvement
>            Reporter: Marton Elek
>            Assignee: Marton Elek
>            Priority: Major
>
> We have acceptance tests with the help of docker/docker-compose where we generate the keytab files on the fly with the help of a lightweight (unsecure) REST endpoint.
> But this generation can be very slow especially when the DNS is slow. When I start a VPN the secure cluster can't be started in the 90 sec period. (>100 keytabs are generated and one keytab generation is ~5 sec).
> The solutions is to generate only the *required* keystabs in each of the containers.
> Instead of request all the possible keytabs in the *generic* docker-config:
> {code:java}
> KERBEROS_KEYTABS=dn om scm HTTP testuser testuser2 s3g {code}
> We can defined the required keytabs per service (in docker-compose.yaml)
> {code:java}
> environment:
>   KERBEROS_KEYTABS=scm HTTP{code}
> With this approach ~20 keytab file will be generated instead of >100 and the secure tests will be significant faster.



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