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From "Matt Foley (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-14453) Ambari has lowercase hostnames while cluster is installed with uppercase hostnames.
Date Sat, 09 Jan 2016 01:47:39 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-14453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15090328#comment-15090328
] 

Matt Foley commented on AMBARI-14453:
-------------------------------------

Just to clarify something that came up in internal discussion:
Lakshmi's request should only be considered a change in UI presentation for human-readable
purposes.  For all internal uses, including NFS and Kerberos, etc., host names should always
be forced to lower-case, as they currently are.  An implementation of this request would simply
ALSO retain the mixed-case form of the name and use it for human-readable presentation only.

> Ambari has lowercase hostnames while cluster is installed with uppercase hostnames.
> -----------------------------------------------------------------------------------
>
>                 Key: AMBARI-14453
>                 URL: https://issues.apache.org/jira/browse/AMBARI-14453
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-server
>    Affects Versions: 2.2.0
>            Reporter: Lakshmi VS
>            Assignee: Dmitry Lysnichenko
>            Priority: Minor
>             Fix For: 2.2.1
>
>         Attachments: Ambari.JPG, DataNodes.JPG, hbase-hbase-master-N9-1-1.log, hosts.JPG,
yarn-yarn-resourcemanager-N9-1-1.log
>
>
> There is inconsistency in the way hostnames are displayed in Ambari when uppercase or
mixed-case hostnames are used. Most Hadoop interfaces show the hostnames in mixed case, but
Ambari seems to only use lowercase.  For example, hosts page displays the names to be lowercase
(attached screenshot hosts.jpg) while the Namenode UI page shows the datanodes to be uppercase
(attached screenshot DataNodes.jpg). Hbase Master UI has the same behavior too.
> steps: 
> 1. Hadoop cluster with below config is installed successfully with uppercase hostnames.
> {code}
> CLUSTERNAME='N91'
> MASTER1=N9-1-1.labs
> MASTER2=N9-1-2.labs
> DATANODE1=N9-1-3.labs
> DATANODE2=N9-1-4.labs
> DATANODE3=N9-1-5.labs
> {code}
> Snippet of /etc/hosts file -
> {code}
> 10.0.8.1    N9-1-1.labs N9-1-1 byn001-1 hadoopvm1-1
> 10.0.8.2    N9-1-2.labs N9-1-2 byn001-2 hadoopvm1-2
> 10.0.8.3    N9-1-3.labs N9-1-3 byn001-3 hadoopvm1-3
> 10.0.8.4    N9-1-4.labs N9-1-4 byn001-4 hadoopvm1-4
> 10.0.8.5    N9-1-5.labs N9-1-5 byn001-5 hadoopvm1-5
> {code}
> 2. Ambari host page shows all hostnames to be of lower case.



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