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  1. Ambari
  2. AMBARI-8479

YARN service components should indicate security state

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      Description

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

      RESOURCEMANAGER

      Indicators

      • Command JSON
        • config['configurations']['cluster-env']['security_enabled']
          • = “true”
      • Configuration File: /etc/hadoop/conf/yarn-site.xml
        • yarn.timeline-service.enabled
          • = "true"
          • required
        • yarn.timeline-service.http-authentication.type
          • = "kerberos"
          • required
        • yarn.acl.enable
          • = "true"
          • required
        • yarn.resourcemanager.keytab
          • not empty
          • path exists and is readable
          • required
        • yarn.resourcemanager.principal
          • not empty
          • required
        • yarn.resourcemanager.webapp.spnego-keytab-file
          • not empty
          • path exists and is readable
          • required
        • yarn.resourcemanager.webapp.spnego-principal
          • not empty
          • required

      Pseudocode

      if indicators imply security is on and validate
          if kinit(resourcemanager principal) succeeds
              state = SECURED_KERBEROS
          else
              state = ERROR 
      else
          state = UNSECURED
      

      NODEMANAGER

      Indicators

      • Command JSON
        • config['configurations']['cluster-env']['security_enabled']
          • = “true”
      • Configuration File: /etc/hadoop/conf/yarn-site.xml
        • yarn.timeline-service.enabled
          • = "true"
          • required
        • yarn.timeline-service.http-authentication.type
          • = "kerberos"
          • required
        • yarn.acl.enable
          • = "true"
          • required
        • yarn.nodemanager.keytab
          • not empty
          • path exists and is readable
          • required
        • yarn.nodemanager.principal
          • not empty
          • required
        • yarn.nodemanager.webapp.spnego-keytab-file
          • not empty
          • path exists and is readable
          • required
        • yarn.nodemanager.webapp.spnego-principal
          • not empty
          • required

      Pseudocode

      if indicators imply security is on and validate
          if kinit(nodemanager principal) succeeds
              state = SECURED_KERBEROS
          else
              state = ERROR 
      else
          state = UNSECURED
      

      APP_TIMELINE_SERVER

      Indicators

      • Command JSON
        • config['configurations']['cluster-env']['security_enabled']
          • = “true”
      • Configuration File: /etc/hadoop/conf/yarn-site.xml
        • yarn.timeline-service.enabled
          • = "true"
          • required
        • yarn.timeline-service.http-authentication.type
          • = "kerberos"
          • required
        • yarn.acl.enable
          • = "true"
          • required
        • yarn.timeline-service.keytab
          • not empty
          • path exists and is readable
          • required
        • yarn.timeline-service.principal
          • not empty
          • required
        • yarn.timeline-service.http-authentication.kerberos.keytab
          • not empty
          • path exists and is readable
          • required
        • yarn.timeline-service.http-authentication.kerberos.principal
          • not empty
          • required

      Pseudocode

      if indicators imply security is on and validate
          if kinit(nodemanager principal) succeeds
              state = SECURED_KERBEROS
          else
              state = ERROR 
      else
          state = UNSECURED
      

      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.
      Note: kinit calls should specify a temporary cache file which should be destroyed after command is executed - BUG-29477

        Attachments

        1. AMBARI-8479_01.patch
          27 kB
          Robert Levas
        2. AMBARI-8479_02.patch
          27 kB
          Robert Levas
        3. AMBARI-8479_03.patch
          27 kB
          Robert Levas

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              • Assignee:
                rlevas Robert Levas
                Reporter:
                rlevas Robert Levas
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                Dates

                • Created:
                  Updated:
                  Resolved: