[jira] [Updated] (AMBARI-19430) Use common property for principal name prefix to help with customization of unique principal names

["Sumit Mohanty (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AMBARI-19430?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sumit Mohanty updated AMBARI-19430:
-----------------------------------
    Fix Version/s: 2.5.0

> Use common property for principal name prefix to help with customization of unique principal names
> --------------------------------------------------------------------------------------------------
>
>                 Key: AMBARI-19430
>                 URL: https://issues.apache.org/jira/browse/AMBARI-19430
>             Project: Ambari
>          Issue Type: Bug
>            Reporter: Robert Levas
>            Assignee: Robert Levas
>              Labels: kerberos, kerberos_descriptor
>             Fix For: 2.5.0
>
>         Attachments: AMBARI-19430_branch-2.5_01.patch, AMBARI-19430_trunk_01.patch
>
>
> Use common property for principal name prefix to help with customization of unique principal names.  
> All _headless_ Kerberos identities have a non-unique principal name (across clusters). To help this issue, the cluster name is appended to these principal names by adding "-$\{cluster-name|toLower()\}" after the principal name component. If the user wants to change this convention, they will need to find all _headless_ principals and make the change. On top of that, when adding new components, they will need to remember to make the change to new _headless_ principal names. 
> A better solution is to provide a _global_ property named "principal_suffix" and use that in each _headless_ principal name. By default the value for this property will be
> {code}
> principal_suffix="-${cluster_name|toLower()}"
> {code}
> If the user would like not use a prefix (in the event there is only a single cluster connecting to the KDC), the value can be changed to
> {code}
> principal_suffix=""
> {code}
> Finally if the user would like to use some other randomizer, they can set the value to something else. For example
> {code}
> principal_suffix="_12345"
> {code}
> The property is set in the Kerberos descriptor's "properties" block.   For example:
> {code}
> {
>   "properties": {
>     "realm": "${kerberos-env/realm}",
>     ...,
>     "principal_suffix": "${cluster_name|toLower()}"
>   },
>   "identities": [
>     ..., 
>     {
>       "name": "smokeuser",
>       "principal": {
>         "value": "${cluster-env/smokeuser}-${principal_suffix}@${realm}",
>         "type": "user",
>         "configuration": "cluster-env/smokeuser_principal_name",
>         "local_username": "${cluster-env/smokeuser}"
>       },
>       ...
>     }
>   ],
>   "services": [
>     {
> {code} 



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