{
  "services": [
    {
      "name": "YARN",
      "configurations": [
      ],
      "components": [
        {
          "name": "NODEMANAGER",
          "identities": [
            {
              "name": "nodemanager_nm",
              "principal": {
                "value": "nm/_HOST@${realm}",
                "configuration": "yarn-site/yarn.nodemanager.principal"
              },
              "keytab": {
                "file": "${keytab_dir}/nm.service.keytab",
                "owner": {
                  "name": "${hadoop-env/hdfs_user}",
                  "access": "r"
                },
                "group": {
                  "name": "${cluster-env/user_group}",
                  "access": ""
                },
                "configuration": "yarn-site/yarn.nodemanager.keytab"
              }
            },
            {
              "name": "nodemanager_host",
              "principal": {
                "value": "host/_HOST@${realm}"
              },
              "keytab": {
                "file": "${keytab_dir}/nm.service.keytab",
                "owner": {
                  "name": "${hadoop-env/hdfs_user}",
                  "access": "r"
                },
                "group": {
                  "name": "${cluster-env/user_group}",
                  "access": ""
                }
              }
            }
          ]
        },
        {
          "name": "RESOURCEMANAGER",
          "identities": [
            {
              "name": "resource_manager_rm",
              "principal": {
                "value": "rm/_HOST@${realm}",
                "configuration": "yarn-site/yarn.resourcemanager.principal"
              },
              "keytab": {
                "file": "${keytab_dir}/rm.service.keytab",
                "owner": {
                  "name": "${hadoop-env/hdfs_user}",
                  "access": "r"
                },
                "group": {
                  "name": "${cluster-env/user_group}",
                  "access": ""
                },
                "configuration": "yarn-site/yarn.resourcemanager.keytab"
              }
            },
            {
              "name": "resource_manager_host",
              "principal": {
                "value": "host/_HOST@${realm}"
              },
              "keytab": {
                "file": "${keytab_dir}/rm.service.keytab",
                "owner": {
                  "name": "${hadoop-env/hdfs_user}",
                  "access": "r"
                },
                "group": {
                  "name": "${cluster-env/user_group}",
                  "access": ""
                }
              }
            }
          ]
        }
      ]
    },
    {
      "name": "MAPREDUCE2",
      "components": [
        {
          "name": "HISTORYSERVER",
          "identities": [
            {
              "name": "history_server_jhs",
              "principal": {
                "value": "jhs/_HOST@${realm}",
                "configuration": "mapred-site/mapreduce.jobhistory.principal"
              },
              "keytab": {
                "file": "${keytab_dir}/jhs.service.keytab",
                "owner": {
                  "name": "${hadoop-env/hdfs_user}",
                  "access": "r"
                },
                "group": {
                  "name": "${cluster-env/user_group}",
                  "access": ""
                },
                "configuration": "mapred-site/mapreduce.jobhistory.keytab"
              }
            },
            {
              "name": "history_server_host",
              "principal": {
                "value": "host/_HOST@${realm}"
              },
              "keytab": {
                "file": "${keytab_dir}/jhs.service.keytab",
                "owner": {
                  "name": "${hadoop-env/hdfs_user}",
                  "access": "r"
                },
                "group": {
                  "name": "${cluster-env/user_group}",
                  "access": ""
                }
              }
            },
            {
              "name": "/spnego"
            }
          ]

        }
      ]
    }
  ]
}