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From "Robert Levas (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMBARI-8795) MAPREDUCE2 service components should indicate security state
Date Thu, 18 Dec 2014 15:56:13 GMT
Robert Levas created AMBARI-8795:
------------------------------------

             Summary: MAPREDUCE2 service components should indicate security state
                 Key: AMBARI-8795
                 URL: https://issues.apache.org/jira/browse/AMBARI-8795
             Project: Ambari
          Issue Type: Improvement
          Components: ambari-server, stacks
    Affects Versions: 2.0.0
            Reporter: Robert Levas
            Assignee: Robert Levas
             Fix For: 2.0.0


The MAPREDUCE2 service components should indicate security state when queried by Ambari Agent
via STATUS_COMMAND.  Each component should determine it's state as follows:

h3. HISTORYSERVER
h4. Indicators
* Command JSON
** config\['configurations']\['cluster-env']\['security_enabled'] 
*** = “true”
* Configuration File: params.hive_client_conf_dir + ‘mapred-site.xml’
** mapreduce.jobhistory.principal
*** not empty
*** required
** mapreduce.jobhistory.keytab
*** not empty
*** path exists and is readable
*** required

h4. Pseudocode
{code}
if indicators imply security is on and validate
    if kinit(mapreduce.jobhistory.principal) succeeds
        state = SECURED_KERBEROS
    else
        state = ERROR 
else
    state = UNSECURED
{code}

_*Note*_: Due to the _cost_ of calling {{kinit}} results should be cached for a period of
time before retrying.  This may be an issue depending on the frequency of the heartbeat timeout.




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