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From alejan...@apache.org
Subject [12/20] ambari git commit: AMBARI-19137. HDP 3.0 TP - move ZK, HDFS, YARN/MR into new common-services version (alejandro)
Date Thu, 08 Dec 2016 23:15:34 GMT
http://git-wip-us.apache.org/repos/asf/ambari/blob/d845449a/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/service_check.py
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/service_check.py b/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/service_check.py
new file mode 100644
index 0000000..981f002
--- /dev/null
+++ b/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/service_check.py
@@ -0,0 +1,152 @@
+"""
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+"""
+
+from resource_management.libraries.script.script import Script
+from resource_management.core.shell import as_user
+from ambari_commons.os_family_impl import OsFamilyImpl
+from ambari_commons import OSConst
+from resource_management.libraries.functions.curl_krb_request import curl_krb_request
+from resource_management.libraries import functions
+from resource_management.libraries.functions.format import format
+from resource_management.libraries.resources.execute_hadoop import ExecuteHadoop
+from resource_management.core.logger import Logger
+from resource_management.core.source import StaticFile
+from resource_management.core.resources.system import Execute, File
+
+
+class HdfsServiceCheck(Script):
+  pass
+
+@OsFamilyImpl(os_family=OsFamilyImpl.DEFAULT)
+class HdfsServiceCheckDefault(HdfsServiceCheck):
+  def service_check(self, env):
+    import params
+
+    env.set_params(params)
+    unique = functions.get_unique_id_and_date()
+    dir = params.hdfs_tmp_dir
+    tmp_file = format("{dir}/{unique}")
+
+    safemode_command = format("dfsadmin -fs {namenode_address} -safemode get | grep OFF")
+
+    if params.security_enabled:
+      Execute(format("{kinit_path_local} -kt {hdfs_user_keytab} {hdfs_principal_name}"),
+        user=params.hdfs_user
+      )
+    ExecuteHadoop(safemode_command,
+                  user=params.hdfs_user,
+                  logoutput=True,
+                  conf_dir=params.hadoop_conf_dir,
+                  try_sleep=3,
+                  tries=20,
+                  bin_dir=params.hadoop_bin_dir
+    )
+    params.HdfsResource(dir,
+                        type="directory",
+                        action="create_on_execute",
+                        mode=0777
+    )
+    params.HdfsResource(tmp_file,
+                        type="file",
+                        action="delete_on_execute",
+    )
+
+    params.HdfsResource(tmp_file,
+                        type="file",
+                        source="/etc/passwd",
+                        action="create_on_execute"
+    )
+    params.HdfsResource(None, action="execute")
+
+    if params.has_journalnode_hosts:
+      if params.security_enabled:
+        for host in params.journalnode_hosts:
+          if params.https_only:
+            uri = format("https://{host}:{journalnode_port}")
+          else:
+            uri = format("http://{host}:{journalnode_port}")
+          response, errmsg, time_millis = curl_krb_request(params.tmp_dir, params.smoke_user_keytab,
+                                                           params.smokeuser_principal, uri, "jn_service_check",
+                                                           params.kinit_path_local, False, None, params.smoke_user)
+          if not response:
+            Logger.error("Cannot access WEB UI on: {0}. Error : {1}", uri, errmsg)
+            return 1
+      else:
+        journalnode_port = params.journalnode_port
+        checkWebUIFileName = "checkWebUI.py"
+        checkWebUIFilePath = format("{tmp_dir}/{checkWebUIFileName}")
+        comma_sep_jn_hosts = ",".join(params.journalnode_hosts)
+        checkWebUICmd = format("ambari-python-wrap {checkWebUIFilePath} -m {comma_sep_jn_hosts} -p {journalnode_port} -s {https_only}")
+        File(checkWebUIFilePath,
+             content=StaticFile(checkWebUIFileName),
+             mode=0775)
+
+        Execute(checkWebUICmd,
+                logoutput=True,
+                try_sleep=3,
+                tries=5,
+                user=params.smoke_user
+        )
+
+    if params.is_namenode_master:
+      if params.has_zkfc_hosts:
+        pid_dir = format("{hadoop_pid_dir_prefix}/{hdfs_user}")
+        pid_file = format("{pid_dir}/hadoop-{hdfs_user}-zkfc.pid")
+        check_zkfc_process_cmd = as_user(format(
+          "ls {pid_file} >/dev/null 2>&1 && ps -p `cat {pid_file}` >/dev/null 2>&1"), user=params.hdfs_user)
+        Execute(check_zkfc_process_cmd,
+                logoutput=True,
+                try_sleep=3,
+                tries=5
+        )
+
+@OsFamilyImpl(os_family=OSConst.WINSRV_FAMILY)
+class HdfsServiceCheckWindows(HdfsServiceCheck):
+  def service_check(self, env):
+    import params
+    env.set_params(params)
+
+    unique = functions.get_unique_id_and_date()
+
+    #Hadoop uses POSIX-style paths, separator is always /
+    dir = params.hdfs_tmp_dir
+    tmp_file = dir + '/' + unique
+
+    #commands for execution
+    hadoop_cmd = "cmd /C %s" % (os.path.join(params.hadoop_home, "bin", "hadoop.cmd"))
+    create_dir_cmd = "%s fs -mkdir %s" % (hadoop_cmd, dir)
+    own_dir = "%s fs -chmod 777 %s" % (hadoop_cmd, dir)
+    test_dir_exists = "%s fs -test -e %s" % (hadoop_cmd, dir)
+    cleanup_cmd = "%s fs -rm %s" % (hadoop_cmd, tmp_file)
+    create_file_cmd = "%s fs -put %s %s" % (hadoop_cmd, os.path.join(params.hadoop_conf_dir, "core-site.xml"), tmp_file)
+    test_cmd = "%s fs -test -e %s" % (hadoop_cmd, tmp_file)
+
+    hdfs_cmd = "cmd /C %s" % (os.path.join(params.hadoop_home, "bin", "hdfs.cmd"))
+    safemode_command = "%s dfsadmin -safemode get | %s OFF" % (hdfs_cmd, params.grep_exe)
+
+    Execute(safemode_command, logoutput=True, try_sleep=3, tries=20)
+    Execute(create_dir_cmd, user=params.hdfs_user,logoutput=True, ignore_failures=True)
+    Execute(own_dir, user=params.hdfs_user,logoutput=True)
+    Execute(test_dir_exists, user=params.hdfs_user,logoutput=True)
+    Execute(create_file_cmd, user=params.hdfs_user,logoutput=True)
+    Execute(test_cmd, user=params.hdfs_user,logoutput=True)
+    Execute(cleanup_cmd, user=params.hdfs_user,logoutput=True)
+
+if __name__ == "__main__":
+  HdfsServiceCheck().execute()

http://git-wip-us.apache.org/repos/asf/ambari/blob/d845449a/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/setup_ranger_hdfs.py
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/setup_ranger_hdfs.py b/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/setup_ranger_hdfs.py
new file mode 100644
index 0000000..e3aff9d
--- /dev/null
+++ b/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/setup_ranger_hdfs.py
@@ -0,0 +1,121 @@
+#!/usr/bin/env python
+"""
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+"""
+import os
+from resource_management.core.logger import Logger
+from resource_management.core.resources.system import Execute
+from resource_management.libraries.functions import StackFeature
+from resource_management.libraries.functions.stack_features import check_stack_feature
+from resource_management.libraries.functions.constants import Direction
+from resource_management.libraries.functions.format import format
+
+
+def setup_ranger_hdfs(upgrade_type=None):
+  import params
+
+  if params.has_ranger_admin:
+
+
+    stack_version = None
+
+    if upgrade_type is not None:
+      stack_version = params.version
+
+    if params.retryAble:
+      Logger.info("HDFS: Setup ranger: command retry enables thus retrying if ranger admin is down !")
+    else:
+      Logger.info("HDFS: Setup ranger: command retry not enabled thus skipping if ranger admin is down !")
+
+
+    if params.xml_configurations_supported:
+        from resource_management.libraries.functions.setup_ranger_plugin_xml import setup_ranger_plugin
+        api_version=None
+        if params.stack_supports_ranger_kerberos:
+          api_version='v2'
+        setup_ranger_plugin('hadoop-client', 'hdfs', params.previous_jdbc_jar,
+                             params.downloaded_custom_connector, params.driver_curl_source,
+                             params.driver_curl_target, params.java_home,
+                             params.repo_name, params.hdfs_ranger_plugin_repo,
+                             params.ranger_env, params.ranger_plugin_properties,
+                             params.policy_user, params.policymgr_mgr_url,
+                             params.enable_ranger_hdfs, conf_dict=params.hadoop_conf_dir,
+                             component_user=params.hdfs_user, component_group=params.user_group, cache_service_list=['hdfs'],
+                             plugin_audit_properties=params.config['configurations']['ranger-hdfs-audit'], plugin_audit_attributes=params.config['configuration_attributes']['ranger-hdfs-audit'],
+                             plugin_security_properties=params.config['configurations']['ranger-hdfs-security'], plugin_security_attributes=params.config['configuration_attributes']['ranger-hdfs-security'],
+                             plugin_policymgr_ssl_properties=params.config['configurations']['ranger-hdfs-policymgr-ssl'], plugin_policymgr_ssl_attributes=params.config['configuration_attributes']['ranger-hdfs-policymgr-ssl'],
+                             component_list=['hadoop-client'], audit_db_is_enabled=params.xa_audit_db_is_enabled,
+                             credential_file=params.credential_file, xa_audit_db_password=params.xa_audit_db_password,
+                             ssl_truststore_password=params.ssl_truststore_password, ssl_keystore_password=params.ssl_keystore_password,
+                             api_version=api_version ,stack_version_override = stack_version, skip_if_rangeradmin_down= not params.retryAble,
+                             is_security_enabled = params.security_enabled,
+                             is_stack_supports_ranger_kerberos = params.stack_supports_ranger_kerberos,
+                             component_user_principal=params.nn_principal_name if params.security_enabled else None,
+                             component_user_keytab=params.nn_keytab if params.security_enabled else None)
+    else:
+        from resource_management.libraries.functions.setup_ranger_plugin import setup_ranger_plugin
+
+        setup_ranger_plugin('hadoop-client', 'hdfs', params.previous_jdbc_jar,
+                            params.downloaded_custom_connector, params.driver_curl_source,
+                            params.driver_curl_target, params.java_home,
+                            params.repo_name, params.hdfs_ranger_plugin_repo,
+                            params.ranger_env, params.ranger_plugin_properties,
+                            params.policy_user, params.policymgr_mgr_url,
+                            params.enable_ranger_hdfs, conf_dict=params.hadoop_conf_dir,
+                            component_user=params.hdfs_user, component_group=params.user_group, cache_service_list=['hdfs'],
+                            plugin_audit_properties=params.config['configurations']['ranger-hdfs-audit'], plugin_audit_attributes=params.config['configuration_attributes']['ranger-hdfs-audit'],
+                            plugin_security_properties=params.config['configurations']['ranger-hdfs-security'], plugin_security_attributes=params.config['configuration_attributes']['ranger-hdfs-security'],
+                            plugin_policymgr_ssl_properties=params.config['configurations']['ranger-hdfs-policymgr-ssl'], plugin_policymgr_ssl_attributes=params.config['configuration_attributes']['ranger-hdfs-policymgr-ssl'],
+                            component_list=['hadoop-client'], audit_db_is_enabled=params.xa_audit_db_is_enabled,
+                            credential_file=params.credential_file, xa_audit_db_password=params.xa_audit_db_password,
+                            ssl_truststore_password=params.ssl_truststore_password, ssl_keystore_password=params.ssl_keystore_password,
+                            stack_version_override = stack_version, skip_if_rangeradmin_down= not params.retryAble)
+
+    if stack_version and params.upgrade_direction == Direction.UPGRADE:
+      # when upgrading to stack remove_ranger_hdfs_plugin_env, this env file must be removed
+      if check_stack_feature(StackFeature.REMOVE_RANGER_HDFS_PLUGIN_ENV, stack_version):
+        source_file = os.path.join(params.hadoop_conf_dir, 'set-hdfs-plugin-env.sh')
+        target_file = source_file + ".bak"
+        Execute(("mv", source_file, target_file), sudo=True, only_if=format("test -f {source_file}"))
+  else:
+    Logger.info('Ranger admin not installed')
+
+def create_ranger_audit_hdfs_directories():
+  import params
+
+  if params.has_ranger_admin:
+    if params.xml_configurations_supported and params.enable_ranger_hdfs and params.xa_audit_hdfs_is_enabled:
+      params.HdfsResource("/ranger/audit",
+                         type="directory",
+                         action="create_on_execute",
+                         owner=params.hdfs_user,
+                         group=params.hdfs_user,
+                         mode=0755,
+                         recursive_chmod=True,
+      )
+      params.HdfsResource("/ranger/audit/hdfs",
+                         type="directory",
+                         action="create_on_execute",
+                         owner=params.hdfs_user,
+                         group=params.hdfs_user,
+                         mode=0700,
+                         recursive_chmod=True,
+      )
+      params.HdfsResource(None, action="execute")
+  else:
+    Logger.info('Ranger admin not installed')

http://git-wip-us.apache.org/repos/asf/ambari/blob/d845449a/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/snamenode.py
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/snamenode.py b/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/snamenode.py
new file mode 100644
index 0000000..0f1f438
--- /dev/null
+++ b/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/snamenode.py
@@ -0,0 +1,155 @@
+"""
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+"""
+
+from resource_management.libraries.script.script import Script
+from resource_management.libraries.functions import conf_select, stack_select
+from resource_management.libraries.functions.constants import StackFeature
+from resource_management.libraries.functions.stack_features import check_stack_feature
+from resource_management.libraries.functions.security_commons import build_expectations, \
+  cached_kinit_executor, get_params_from_filesystem, validate_security_config_properties, \
+  FILE_TYPE_XML
+
+from hdfs_snamenode import snamenode
+from hdfs import hdfs
+from ambari_commons.os_family_impl import OsFamilyImpl
+from ambari_commons import OSConst
+
+from resource_management.core.logger import Logger
+
+class SNameNode(Script):
+  def install(self, env):
+    import params
+    env.set_params(params)
+    self.install_packages(env)
+
+  def configure(self, env):
+    import params
+    env.set_params(params)
+    hdfs("secondarynamenode")
+    snamenode(action="configure")
+
+  def start(self, env, upgrade_type=None):
+    import params
+    env.set_params(params)
+    self.configure(env)
+    snamenode(action="start")
+
+  def stop(self, env, upgrade_type=None):
+    import params
+    env.set_params(params)
+    snamenode(action="stop")
+
+  def status(self, env):
+    import status_params
+    env.set_params(status_params)
+    snamenode(action="status")
+
+@OsFamilyImpl(os_family=OsFamilyImpl.DEFAULT)
+class SNameNodeDefault(SNameNode):
+
+  def get_component_name(self):
+    return "hadoop-hdfs-secondarynamenode"
+
+  def pre_upgrade_restart(self, env, upgrade_type=None):
+    Logger.info("Executing Stack Upgrade pre-restart")
+    import params
+    env.set_params(params)
+
+    if params.version and check_stack_feature(StackFeature.ROLLING_UPGRADE, params.version):
+      conf_select.select(params.stack_name, "hadoop", params.version)
+      stack_select.select("hadoop-hdfs-secondarynamenode", params.version)
+
+  def security_status(self, env):
+    import status_params
+
+    env.set_params(status_params)
+    props_value_check = {"hadoop.security.authentication": "kerberos",
+                         "hadoop.security.authorization": "true"}
+    props_empty_check = ["hadoop.security.auth_to_local"]
+    props_read_check = None
+    core_site_expectations = build_expectations('core-site', props_value_check, props_empty_check,
+                                                props_read_check)
+    props_value_check = None
+    props_empty_check = ['dfs.secondary.namenode.kerberos.internal.spnego.principal',
+                         'dfs.secondary.namenode.keytab.file',
+                         'dfs.secondary.namenode.kerberos.principal']
+    props_read_check = ['dfs.secondary.namenode.keytab.file']
+    hdfs_site_expectations = build_expectations('hdfs-site', props_value_check, props_empty_check,
+                                                props_read_check)
+
+    hdfs_expectations = {}
+    hdfs_expectations.update(core_site_expectations)
+    hdfs_expectations.update(hdfs_site_expectations)
+
+    security_params = get_params_from_filesystem(status_params.hadoop_conf_dir,
+                                                 {'core-site.xml': FILE_TYPE_XML,
+                                                  'hdfs-site.xml': FILE_TYPE_XML})
+
+    if 'core-site' in security_params and 'hadoop.security.authentication' in security_params['core-site'] and \
+        security_params['core-site']['hadoop.security.authentication'].lower() == 'kerberos':
+      result_issues = validate_security_config_properties(security_params, hdfs_expectations)
+      if not result_issues:  # If all validations passed successfully
+        try:
+          # Double check the dict before calling execute
+          if ('hdfs-site' not in security_params or
+                  'dfs.secondary.namenode.keytab.file' not in security_params['hdfs-site'] or
+                  'dfs.secondary.namenode.kerberos.principal' not in security_params['hdfs-site']):
+            self.put_structured_out({"securityState": "UNSECURED"})
+            self.put_structured_out(
+              {"securityIssuesFound": "Keytab file or principal are not set property."})
+            return
+
+          cached_kinit_executor(status_params.kinit_path_local,
+                                status_params.hdfs_user,
+                                security_params['hdfs-site']['dfs.secondary.namenode.keytab.file'],
+                                security_params['hdfs-site'][
+                                  'dfs.secondary.namenode.kerberos.principal'],
+                                status_params.hostname,
+                                status_params.tmp_dir)
+          self.put_structured_out({"securityState": "SECURED_KERBEROS"})
+        except Exception as e:
+          self.put_structured_out({"securityState": "ERROR"})
+          self.put_structured_out({"securityStateErrorInfo": str(e)})
+      else:
+        issues = []
+        for cf in result_issues:
+          issues.append("Configuration file %s did not pass the validation. Reason: %s" % (cf, result_issues[cf]))
+        self.put_structured_out({"securityIssuesFound": ". ".join(issues)})
+        self.put_structured_out({"securityState": "UNSECURED"})
+    else:
+      self.put_structured_out({"securityState": "UNSECURED"})
+      
+  def get_log_folder(self):
+    import params
+    return params.hdfs_log_dir
+  
+  def get_user(self):
+    import params
+    return params.hdfs_user
+
+  def get_pid_files(self):
+    import status_params
+    return [status_params.snamenode_pid_file]
+
+@OsFamilyImpl(os_family=OSConst.WINSRV_FAMILY)
+class SNameNodeWindows(SNameNode):
+  pass
+
+if __name__ == "__main__":
+  SNameNode().execute()

http://git-wip-us.apache.org/repos/asf/ambari/blob/d845449a/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/status_params.py
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/status_params.py b/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/status_params.py
new file mode 100644
index 0000000..153f9a6
--- /dev/null
+++ b/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/status_params.py
@@ -0,0 +1,58 @@
+"""
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+"""
+
+from ambari_commons import OSCheck
+
+from resource_management.libraries.functions import conf_select
+from resource_management.libraries.functions import format
+from resource_management.libraries.functions.default import default
+from resource_management.libraries.functions import get_kinit_path
+from resource_management.libraries.script.script import Script
+
+config = Script.get_config()
+
+if OSCheck.is_windows_family():
+  namenode_win_service_name = "namenode"
+  datanode_win_service_name = "datanode"
+  snamenode_win_service_name = "secondarynamenode"
+  journalnode_win_service_name = "journalnode"
+  zkfc_win_service_name = "zkfc"
+else:
+  hadoop_pid_dir_prefix = config['configurations']['hadoop-env']['hadoop_pid_dir_prefix']
+  hdfs_user = config['configurations']['hadoop-env']['hdfs_user']
+  hadoop_pid_dir = format("{hadoop_pid_dir_prefix}/{hdfs_user}")
+  datanode_pid_file = format("{hadoop_pid_dir}/hadoop-{hdfs_user}-datanode.pid")
+  namenode_pid_file = format("{hadoop_pid_dir}/hadoop-{hdfs_user}-namenode.pid")
+  snamenode_pid_file = format("{hadoop_pid_dir}/hadoop-{hdfs_user}-secondarynamenode.pid")
+  journalnode_pid_file = format("{hadoop_pid_dir}/hadoop-{hdfs_user}-journalnode.pid")
+  zkfc_pid_file = format("{hadoop_pid_dir}/hadoop-{hdfs_user}-zkfc.pid")
+  nfsgateway_pid_file = format("{hadoop_pid_dir_prefix}/root/hadoop_privileged_nfs3.pid")
+
+  # Security related/required params
+  hostname = config['hostname']
+  security_enabled = config['configurations']['cluster-env']['security_enabled']
+  hdfs_user_principal = config['configurations']['hadoop-env']['hdfs_principal_name']
+  hdfs_user_keytab = config['configurations']['hadoop-env']['hdfs_user_keytab']
+
+  hadoop_conf_dir = conf_select.get_hadoop_conf_dir()
+
+  kinit_path_local = get_kinit_path(default('/configurations/kerberos-env/executable_search_paths', None))
+  tmp_dir = Script.get_tmp_dir()
+
+stack_name = default("/hostLevelParams/stack_name", None)
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/ambari/blob/d845449a/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/utils.py
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/utils.py b/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/utils.py
new file mode 100644
index 0000000..4577ad2
--- /dev/null
+++ b/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/utils.py
@@ -0,0 +1,383 @@
+"""
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+"""
+import os
+import re
+import urllib2
+import ambari_simplejson as json # simplejson is much faster comparing to Python 2.6 json module and has the same functions set.
+
+from resource_management.core.resources.system import Directory, File, Execute
+from resource_management.libraries.functions.format import format
+from resource_management.libraries.functions import check_process_status
+from resource_management.libraries.functions import StackFeature
+from resource_management.libraries.functions.stack_features import check_stack_feature
+from resource_management.core import shell
+from resource_management.core.shell import as_user, as_sudo
+from resource_management.core.exceptions import ComponentIsNotRunning
+from resource_management.core.logger import Logger
+from resource_management.libraries.functions.curl_krb_request import curl_krb_request
+from resource_management.core.exceptions import Fail
+from resource_management.libraries.functions.namenode_ha_utils import get_namenode_states
+from resource_management.libraries.functions.show_logs import show_logs
+from ambari_commons.inet_utils import ensure_ssl_using_tls_v1
+from zkfc_slave import ZkfcSlaveDefault
+
+ensure_ssl_using_tls_v1()
+
+def safe_zkfc_op(action, env):
+  """
+  Idempotent operation on the zkfc process to either start or stop it.
+  :param action: start or stop
+  :param env: environment
+  """
+  Logger.info("Performing action {0} on zkfc.".format(action))
+  zkfc = None
+  if action == "start":
+    try:
+      ZkfcSlaveDefault.status_static(env)
+    except ComponentIsNotRunning:
+      ZkfcSlaveDefault.start_static(env)
+
+  if action == "stop":
+    try:
+      ZkfcSlaveDefault.status_static(env)
+    except ComponentIsNotRunning:
+      pass
+    else:
+      ZkfcSlaveDefault.stop_static(env)
+
+def initiate_safe_zkfc_failover():
+  """
+  If this is the active namenode, initiate a safe failover and wait for it to become the standby.
+
+  If an error occurs, force a failover to happen by killing zkfc on this host. In this case, during the Restart,
+  will also have to start ZKFC manually.
+  """
+  import params
+
+  # Must kinit before running the HDFS command
+  if params.security_enabled:
+    Execute(format("{kinit_path_local} -kt {hdfs_user_keytab} {hdfs_principal_name}"),
+            user = params.hdfs_user)
+
+  active_namenode_id = None
+  standby_namenode_id = None
+  active_namenodes, standby_namenodes, unknown_namenodes = get_namenode_states(params.hdfs_site, params.security_enabled, params.hdfs_user)
+  if active_namenodes:
+    active_namenode_id = active_namenodes[0][0]
+  if standby_namenodes:
+    standby_namenode_id = standby_namenodes[0][0]
+
+  if active_namenode_id:
+    Logger.info(format("Active NameNode id: {active_namenode_id}"))
+  if standby_namenode_id:
+    Logger.info(format("Standby NameNode id: {standby_namenode_id}"))
+  if unknown_namenodes:
+    for unknown_namenode in unknown_namenodes:
+      Logger.info("NameNode HA state for {0} is unknown".format(unknown_namenode[0]))
+
+  if params.namenode_id == active_namenode_id and params.other_namenode_id == standby_namenode_id:
+    # Failover if this NameNode is active and other NameNode is up and in standby (i.e. ready to become active on failover)
+    Logger.info(format("NameNode {namenode_id} is active and NameNode {other_namenode_id} is in standby"))
+
+    failover_command = format("hdfs haadmin -ns {dfs_ha_nameservices} -failover {namenode_id} {other_namenode_id}")
+    check_standby_cmd = format("hdfs haadmin -ns {dfs_ha_nameservices} -getServiceState {namenode_id} | grep standby")
+
+    msg = "Rolling Upgrade - Initiating a ZKFC failover on active NameNode host {0}.".format(params.hostname)
+    Logger.info(msg)
+    code, out = shell.call(failover_command, user=params.hdfs_user, logoutput=True)
+    Logger.info(format("Rolling Upgrade - failover command returned {code}"))
+    wait_for_standby = False
+
+    if code == 0:
+      wait_for_standby = True
+    else:
+      # Try to kill ZKFC manually
+      was_zkfc_killed = kill_zkfc(params.hdfs_user)
+      code, out = shell.call(check_standby_cmd, user=params.hdfs_user, logoutput=True)
+      Logger.info(format("Rolling Upgrade - check for standby returned {code}"))
+      if code == 255 and out:
+        Logger.info("Rolling Upgrade - NameNode is already down.")
+      else:
+        if was_zkfc_killed:
+          # Only mandate that this be the standby namenode if ZKFC was indeed killed to initiate a failover.
+          wait_for_standby = True
+
+    if wait_for_standby:
+      Logger.info("Waiting for this NameNode to become the standby one.")
+      Execute(check_standby_cmd,
+              user=params.hdfs_user,
+              tries=50,
+              try_sleep=6,
+              logoutput=True)
+  else:
+    msg = "Rolling Upgrade - Skipping ZKFC failover on NameNode host {0}.".format(params.hostname)
+    Logger.info(msg)
+
+def kill_zkfc(zkfc_user):
+  """
+  There are two potential methods for failing over the namenode, especially during a Rolling Upgrade.
+  Option 1. Kill zkfc on primary namenode provided that the secondary is up and has zkfc running on it.
+  Option 2. Silent failover
+  :param zkfc_user: User that started the ZKFC process.
+  :return: Return True if ZKFC was killed, otherwise, false.
+  """
+  import params
+  if params.dfs_ha_enabled:
+    if params.zkfc_pid_file:
+      check_process = as_user(format("ls {zkfc_pid_file} > /dev/null 2>&1 && ps -p `cat {zkfc_pid_file}` > /dev/null 2>&1"), user=zkfc_user)
+      code, out = shell.call(check_process)
+      if code == 0:
+        Logger.debug("ZKFC is running and will be killed.")
+        kill_command = format("kill -15 `cat {zkfc_pid_file}`")
+        Execute(kill_command,
+                user=zkfc_user
+        )
+        File(params.zkfc_pid_file,
+             action = "delete",
+             )
+        return True
+  return False
+
+def service(action=None, name=None, user=None, options="", create_pid_dir=False,
+            create_log_dir=False):
+  """
+  :param action: Either "start" or "stop"
+  :param name: Component name, e.g., "namenode", "datanode", "secondarynamenode", "zkfc"
+  :param user: User to run the command as
+  :param options: Additional options to pass to command as a string
+  :param create_pid_dir: Create PID directory
+  :param create_log_dir: Crate log file directory
+  """
+  import params
+
+  options = options if options else ""
+  pid_dir = format("{hadoop_pid_dir_prefix}/{user}")
+  pid_file = format("{pid_dir}/hadoop-{user}-{name}.pid")
+  hadoop_env_exports = {
+    'HADOOP_LIBEXEC_DIR': params.hadoop_libexec_dir
+  }
+  log_dir = format("{hdfs_log_dir_prefix}/{user}")
+
+  # NFS GATEWAY is always started by root using jsvc due to rpcbind bugs
+  # on Linux such as CentOS6.2. https://bugzilla.redhat.com/show_bug.cgi?id=731542
+  if name == "nfs3" :
+    pid_file = format("{pid_dir}/hadoop_privileged_nfs3.pid")
+    custom_export = {
+      'HADOOP_PRIVILEGED_NFS_USER': params.hdfs_user,
+      'HADOOP_PRIVILEGED_NFS_PID_DIR': pid_dir,
+      'HADOOP_PRIVILEGED_NFS_LOG_DIR': log_dir
+    }
+    hadoop_env_exports.update(custom_export)
+
+  process_id_exists_command = as_sudo(["test", "-f", pid_file]) + " && " + as_sudo(["pgrep", "-F", pid_file])
+
+  # on STOP directories shouldn't be created
+  # since during stop still old dirs are used (which were created during previous start)
+  if action != "stop":
+    if name == "nfs3":
+      Directory(params.hadoop_pid_dir_prefix,
+                mode=0755,
+                owner=params.root_user,
+                group=params.root_group
+      )
+    else:
+      Directory(params.hadoop_pid_dir_prefix,
+                  mode=0755,
+                  owner=params.hdfs_user,
+                  group=params.user_group
+      )
+    if create_pid_dir:
+      Directory(pid_dir,
+                owner=user,
+                group=params.user_group,
+                create_parents = True)
+    if create_log_dir:
+      if name == "nfs3":
+        Directory(log_dir,
+                  mode=0775,
+                  owner=params.root_user,
+                  group=params.user_group)
+      else:
+        Directory(log_dir,
+                  owner=user,
+                  group=params.user_group,
+                  create_parents = True)
+
+  if params.security_enabled and name == "datanode":
+    ## The directory where pid files are stored in the secure data environment.
+    hadoop_secure_dn_pid_dir = format("{hadoop_pid_dir_prefix}/{hdfs_user}")
+    hadoop_secure_dn_pid_file = format("{hadoop_secure_dn_pid_dir}/hadoop_secure_dn.pid")
+
+    # At datanode_non_root stack version and further, we may start datanode as a non-root even in secure cluster
+    if not (params.stack_version_formatted and check_stack_feature(StackFeature.DATANODE_NON_ROOT, params.stack_version_formatted)) or params.secure_dn_ports_are_in_use:
+      user = "root"
+      pid_file = format(
+        "{hadoop_pid_dir_prefix}/{hdfs_user}/hadoop-{hdfs_user}-{name}.pid")
+
+    if action == 'stop' and (params.stack_version_formatted and check_stack_feature(StackFeature.DATANODE_NON_ROOT, params.stack_version_formatted)) and \
+      os.path.isfile(hadoop_secure_dn_pid_file):
+        # We need special handling for this case to handle the situation
+        # when we configure non-root secure DN and then restart it
+        # to handle new configs. Otherwise we will not be able to stop
+        # a running instance 
+        user = "root"
+        
+        try:
+          check_process_status(hadoop_secure_dn_pid_file)
+          
+          custom_export = {
+            'HADOOP_SECURE_DN_USER': params.hdfs_user
+          }
+          hadoop_env_exports.update(custom_export)
+          
+        except ComponentIsNotRunning:
+          pass
+
+  hadoop_daemon = format("{hadoop_bin}/hadoop-daemon.sh")
+
+  if user == "root":
+    cmd = [hadoop_daemon, "--config", params.hadoop_conf_dir, action, name]
+    if options:
+      cmd += [options, ]
+    daemon_cmd = as_sudo(cmd)
+  else:
+    cmd = format("{ulimit_cmd} {hadoop_daemon} --config {hadoop_conf_dir} {action} {name}")
+    if options:
+      cmd += " " + options
+    daemon_cmd = as_user(cmd, user)
+     
+  if action == "start":
+    # remove pid file from dead process
+    File(pid_file, action="delete", not_if=process_id_exists_command)
+    
+    try:
+      Execute(daemon_cmd, not_if=process_id_exists_command, environment=hadoop_env_exports)
+    except:
+      show_logs(log_dir, user)
+      raise
+  elif action == "stop":
+    try:
+      Execute(daemon_cmd, only_if=process_id_exists_command, environment=hadoop_env_exports)
+    except:
+      show_logs(log_dir, user)
+      raise
+    File(pid_file, action="delete")
+
+def get_jmx_data(nn_address, modeler_type, metric, encrypted=False, security_enabled=False):
+  """
+  :param nn_address: Namenode Address, e.g., host:port, ** MAY ** be preceded with "http://" or "https://" already.
+  If not preceded, will use the encrypted param to determine.
+  :param modeler_type: Modeler type to query using startswith function
+  :param metric: Metric to return
+  :return: Return an object representation of the metric, or None if it does not exist
+  """
+  if not nn_address or not modeler_type or not metric:
+    return None
+
+  nn_address = nn_address.strip()
+  if not nn_address.startswith("http"):
+    nn_address = ("https://" if encrypted else "http://") + nn_address
+  if not nn_address.endswith("/"):
+    nn_address = nn_address + "/"
+
+  nn_address = nn_address + "jmx"
+  Logger.info("Retrieve modeler: %s, metric: %s from JMX endpoint %s" % (modeler_type, metric, nn_address))
+
+  if security_enabled:
+    import params
+    data, error_msg, time_millis = curl_krb_request(params.tmp_dir, params.smoke_user_keytab, params.smokeuser_principal, nn_address,
+                            "jn_upgrade", params.kinit_path_local, False, None, params.smoke_user)
+  else:
+    data = urllib2.urlopen(nn_address).read()
+  my_data = None
+  if data:
+    data_dict = json.loads(data)
+    if data_dict:
+      for el in data_dict['beans']:
+        if el is not None and el['modelerType'] is not None and el['modelerType'].startswith(modeler_type):
+          if metric in el:
+            my_data = el[metric]
+            if my_data:
+              my_data = json.loads(str(my_data))
+              break
+  return my_data
+
+def get_port(address):
+  """
+  Extracts port from the address like 0.0.0.0:1019
+  """
+  if address is None:
+    return None
+  m = re.search(r'(?:http(?:s)?://)?([\w\d.]*):(\d{1,5})', address)
+  if m is not None and len(m.groups()) >= 2:
+    return int(m.group(2))
+  else:
+    return None
+
+
+def is_secure_port(port):
+  """
+  Returns True if port is root-owned at *nix systems
+  """
+  if port is not None:
+    return port < 1024
+  else:
+    return False
+
+def is_previous_fs_image():
+  """
+  Return true if there's a previous folder in the HDFS namenode directories.
+  """
+  import params
+  if params.dfs_name_dir:
+    nn_name_dirs = params.dfs_name_dir.split(',')
+    for nn_dir in nn_name_dirs:
+      prev_dir = os.path.join(nn_dir, "previous")
+      if os.path.isdir(prev_dir):
+        return True
+  return False
+
+def get_hdfs_binary(distro_component_name):
+  """
+  Get the hdfs binary to use depending on the stack and version.
+  :param distro_component_name: e.g., hadoop-hdfs-namenode, hadoop-hdfs-datanode
+  :return: The hdfs binary to use
+  """
+  import params
+  hdfs_binary = "hdfs"
+  if params.stack_version_formatted and check_stack_feature(StackFeature.ROLLING_UPGRADE, params.stack_version_formatted):
+    hdfs_binary = "{0}/current/{1}/bin/hdfs".format(params.stack_root, distro_component_name)
+
+  return hdfs_binary
+
+def get_dfsadmin_base_command(hdfs_binary, use_specific_namenode = False):
+  """
+  Get the dfsadmin base command constructed using hdfs_binary path and passing namenode address as explicit -fs argument
+  :param hdfs_binary: path to hdfs binary to use
+  :param use_specific_namenode: flag if set and Namenode HA is enabled, then the dfsadmin command will use
+  current namenode's address
+  :return: the constructed dfsadmin base command
+  """
+  import params
+  dfsadmin_base_command = ""
+  if params.dfs_ha_enabled and use_specific_namenode:
+    dfsadmin_base_command = format("{hdfs_binary} dfsadmin -fs hdfs://{params.namenode_rpc}")
+  else:
+    dfsadmin_base_command = format("{hdfs_binary} dfsadmin -fs {params.namenode_address}")
+  return dfsadmin_base_command

http://git-wip-us.apache.org/repos/asf/ambari/blob/d845449a/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/zkfc_slave.py
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/zkfc_slave.py b/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/zkfc_slave.py
new file mode 100644
index 0000000..f1891a5
--- /dev/null
+++ b/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/scripts/zkfc_slave.py
@@ -0,0 +1,225 @@
+"""
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+"""
+# this is needed to avoid a circular dependency since utils.py calls this class
+import utils
+from hdfs import hdfs
+
+from ambari_commons import OSConst
+from ambari_commons.os_family_impl import OsFamilyImpl
+from resource_management.core.logger import Logger
+from resource_management.core.exceptions import Fail
+from resource_management.core.resources.system import Directory
+from resource_management.core.resources.service import Service
+from resource_management.core import shell
+from resource_management.libraries.functions import conf_select, stack_select
+from resource_management.libraries.functions.constants import StackFeature
+from resource_management.libraries.functions.check_process_status import check_process_status
+from resource_management.libraries.functions.security_commons import build_expectations
+from resource_management.libraries.functions.security_commons import cached_kinit_executor
+from resource_management.libraries.functions.security_commons import get_params_from_filesystem
+from resource_management.libraries.functions.security_commons import validate_security_config_properties
+from resource_management.libraries.functions.security_commons import FILE_TYPE_XML
+from resource_management.libraries.functions.stack_features import check_stack_feature
+from resource_management.libraries.functions.version import compare_versions
+from resource_management.libraries.script import Script
+from resource_management.libraries.functions.version_select_util import get_component_version
+
+class ZkfcSlave(Script):
+  def get_component_name(self):
+    import params
+    if params.version_for_stack_feature_checks and check_stack_feature(StackFeature.ZKFC_VERSION_ADVERTISED, params.version_for_stack_feature_checks):
+      # params.version is not defined when installing cluster from blueprint
+      return "hadoop-hdfs-zkfc"
+    pass
+
+  def install(self, env):
+    import params
+    env.set_params(params)
+    self.install_packages(env)
+    
+  def configure(env):
+    ZkfcSlave.configure_static(env)
+    
+  @staticmethod
+  def configure_static(env):
+    import params
+    env.set_params(params)
+    hdfs("zkfc_slave")
+    pass
+
+@OsFamilyImpl(os_family=OsFamilyImpl.DEFAULT)
+class ZkfcSlaveDefault(ZkfcSlave):
+
+  def start(self, env, upgrade_type=None):
+    ZkfcSlaveDefault.start_static(env, upgrade_type)
+    
+  @staticmethod
+  def start_static(env, upgrade_type=None):
+    import params
+
+    env.set_params(params)
+    ZkfcSlave.configure_static(env)
+    Directory(params.hadoop_pid_dir_prefix,
+              mode=0755,
+              owner=params.hdfs_user,
+              group=params.user_group
+    )
+
+    # format the znode for this HA setup
+    # only run this format command if the active namenode hostname is set
+    # The Ambari UI HA Wizard prompts the user to run this command
+    # manually, so this guarantees it is only run in the Blueprints case
+    if params.dfs_ha_enabled and \
+       params.dfs_ha_namenode_active is not None:
+      success =  initialize_ha_zookeeper(params)
+      if not success:
+        raise Fail("Could not initialize HA state in zookeeper")
+
+    utils.service(
+      action="start", name="zkfc", user=params.hdfs_user, create_pid_dir=True,
+      create_log_dir=True
+    )
+  
+  def stop(self, env, upgrade_type=None):
+    ZkfcSlaveDefault.stop_static(env, upgrade_type)
+
+  @staticmethod
+  def stop_static(env, upgrade_type=None):
+    import params
+
+    env.set_params(params)
+    utils.service(
+      action="stop", name="zkfc", user=params.hdfs_user, create_pid_dir=True,
+      create_log_dir=True
+    )
+
+
+  def status(self, env):
+    ZkfcSlaveDefault.status_static(env)
+    
+  @staticmethod
+  def status_static(env):
+    import status_params
+    env.set_params(status_params)
+    check_process_status(status_params.zkfc_pid_file)
+
+  def security_status(self, env):
+    import status_params
+    env.set_params(status_params)
+    props_value_check = {"hadoop.security.authentication": "kerberos",
+                         "hadoop.security.authorization": "true"}
+    props_empty_check = ["hadoop.security.auth_to_local"]
+    props_read_check = None
+    core_site_expectations = build_expectations('core-site', props_value_check, props_empty_check,
+                                                props_read_check)
+    hdfs_expectations = {}
+    hdfs_expectations.update(core_site_expectations)
+
+    security_params = get_params_from_filesystem(status_params.hadoop_conf_dir,
+                                                   {'core-site.xml': FILE_TYPE_XML})
+    result_issues = validate_security_config_properties(security_params, hdfs_expectations)
+    if 'core-site' in security_params and 'hadoop.security.authentication' in security_params['core-site'] and \
+        security_params['core-site']['hadoop.security.authentication'].lower() == 'kerberos':
+      if not result_issues:  # If all validations passed successfully
+        if status_params.hdfs_user_principal or status_params.hdfs_user_keytab:
+          try:
+            cached_kinit_executor(status_params.kinit_path_local,
+                                  status_params.hdfs_user,
+                                  status_params.hdfs_user_keytab,
+                                  status_params.hdfs_user_principal,
+                                  status_params.hostname,
+                                  status_params.tmp_dir)
+            self.put_structured_out({"securityState": "SECURED_KERBEROS"})
+          except Exception as e:
+            self.put_structured_out({"securityState": "ERROR"})
+            self.put_structured_out({"securityStateErrorInfo": str(e)})
+        else:
+          self.put_structured_out(
+            {"securityIssuesFound": "hdfs principal and/or keytab file is not specified"})
+          self.put_structured_out({"securityState": "UNSECURED"})
+      else:
+        issues = []
+        for cf in result_issues:
+          issues.append("Configuration file %s did not pass the validation. Reason: %s" % (cf, result_issues[cf]))
+        self.put_structured_out({"securityIssuesFound": ". ".join(issues)})
+        self.put_structured_out({"securityState": "UNSECURED"})
+    else:
+      self.put_structured_out({"securityState": "UNSECURED"})
+      
+  def get_log_folder(self):
+    import params
+    return params.hdfs_log_dir
+  
+  def get_user(self):
+    import params
+    return params.hdfs_user
+
+  def get_pid_files(self):
+    import status_params
+    return [status_params.zkfc_pid_file]
+
+  def pre_upgrade_restart(self, env, upgrade_type=None):
+    Logger.info("Executing Stack Upgrade pre-restart")
+    import params
+    env.set_params(params)
+    if params.version and check_stack_feature(StackFeature.ZKFC_VERSION_ADVERTISED, params.version) \
+        and check_stack_feature(StackFeature.ROLLING_UPGRADE, params.version):
+      conf_select.select(params.stack_name, "hadoop", params.version)
+      stack_select.select("hadoop-hdfs-zkfc", params.version)
+
+def initialize_ha_zookeeper(params):
+  try:
+    iterations = 10
+    formatZK_cmd = "hdfs zkfc -formatZK -nonInteractive"
+    Logger.info("Initialize HA state in ZooKeeper: %s" % (formatZK_cmd))
+    for i in range(iterations):
+      Logger.info('Try %d out of %d' % (i+1, iterations))
+      code, out = shell.call(formatZK_cmd, logoutput=False, user=params.hdfs_user)
+      if code == 0:
+        Logger.info("HA state initialized in ZooKeeper successfully")
+        return True
+      elif code == 2:
+        Logger.info("HA state already initialized in ZooKeeper")
+        return True
+      else:
+        Logger.warning('HA state initialization in ZooKeeper failed with %d error code. Will retry' % (code))
+  except Exception as ex:
+    Logger.error('HA state initialization in ZooKeeper threw an exception. Reason %s' %(str(ex)))
+  return False
+
+@OsFamilyImpl(os_family=OSConst.WINSRV_FAMILY)
+class ZkfcSlaveWindows(ZkfcSlave):
+  def start(self, env):
+    import params
+    self.configure(env)
+    Service(params.zkfc_win_service_name, action="start")
+
+  def stop(self, env):
+    import params
+    Service(params.zkfc_win_service_name, action="stop")
+
+  def status(self, env):
+    import status_params
+    from resource_management.libraries.functions.windows_service_utils import check_windows_service_status
+
+    env.set_params(status_params)
+    check_windows_service_status(status_params.zkfc_win_service_name)
+
+if __name__ == "__main__":
+  ZkfcSlave().execute()

http://git-wip-us.apache.org/repos/asf/ambari/blob/d845449a/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/templates/exclude_hosts_list.j2
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/templates/exclude_hosts_list.j2 b/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/templates/exclude_hosts_list.j2
new file mode 100644
index 0000000..a92cdc1
--- /dev/null
+++ b/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/templates/exclude_hosts_list.j2
@@ -0,0 +1,21 @@
+{#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#}
+
+{% for host in hdfs_exclude_file %}
+{{host}}
+{% endfor %}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/ambari/blob/d845449a/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/templates/hdfs.conf.j2
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/templates/hdfs.conf.j2 b/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/templates/hdfs.conf.j2
new file mode 100644
index 0000000..fad5621
--- /dev/null
+++ b/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/templates/hdfs.conf.j2
@@ -0,0 +1,35 @@
+{#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#}
+
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+{{hdfs_user}}   - nofile {{hdfs_user_nofile_limit}}
+{{hdfs_user}}   - nproc  {{hdfs_user_nproc_limit}}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/ambari/blob/d845449a/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/templates/slaves.j2
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/templates/slaves.j2 b/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/templates/slaves.j2
new file mode 100644
index 0000000..4a9e713
--- /dev/null
+++ b/ambari-server/src/main/resources/common-services/HDFS/3.0.0/package/templates/slaves.j2
@@ -0,0 +1,21 @@
+{#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#}
+
+{% for host in slave_hosts %}
+{{host}}
+{% endfor %}

http://git-wip-us.apache.org/repos/asf/ambari/blob/d845449a/ambari-server/src/main/resources/common-services/HDFS/3.0.0/quicklinks/quicklinks.json
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/resources/common-services/HDFS/3.0.0/quicklinks/quicklinks.json b/ambari-server/src/main/resources/common-services/HDFS/3.0.0/quicklinks/quicklinks.json
new file mode 100644
index 0000000..5318ba0
--- /dev/null
+++ b/ambari-server/src/main/resources/common-services/HDFS/3.0.0/quicklinks/quicklinks.json
@@ -0,0 +1,80 @@
+{
+  "name": "default",
+  "description": "default quick links configuration",
+  "configuration": {
+    "protocol":
+    {
+      "type":"https",
+      "checks":[
+        {
+          "property":"dfs.http.policy",
+          "desired":"HTTPS_ONLY",
+          "site":"hdfs-site"
+        }
+      ]
+    },
+
+    "links": [
+      {
+        "name": "namenode_ui",
+        "label": "NameNode UI",
+        "component_name": "NAMENODE",
+        "url":"%@://%@:%@",
+        "requires_user_name": "false",
+        "port":{
+          "http_property": "dfs.namenode.http-address",
+          "http_default_port": "50070",
+          "https_property": "dfs.namenode.https-address",
+          "https_default_port": "50470",
+          "regex": "\\w*:(\\d+)",
+          "site": "hdfs-site"
+        }
+      },
+      {
+        "name": "namenode_logs",
+        "label": "NameNode Logs",
+        "component_name": "NAMENODE",
+        "url":"%@://%@:%@/logs",
+        "requires_user_name": "false",
+        "port":{
+          "http_property": "dfs.namenode.http-address",
+          "http_default_port": "50070",
+          "https_property": "dfs.namenode.https-address",
+          "https_default_port": "50470",
+          "regex": "\\w*:(\\d+)",
+          "site": "hdfs-site"
+        }
+      },
+      {
+        "name": "namenode_jmx",
+        "label": "NameNode JMX",
+        "component_name": "NAMENODE",
+        "url":"%@://%@:%@/jmx",
+        "requires_user_name": "false",
+        "port":{
+          "http_property": "dfs.namenode.http-address",
+          "http_default_port": "50070",
+          "https_property": "dfs.namenode.https-address",
+          "https_default_port": "50470",
+          "regex": "\\w*:(\\d+)",
+          "site": "hdfs-site"
+        }
+      },
+      {
+        "name": "Thread Stacks",
+        "label": "Thread Stacks",
+        "component_name": "NAMENODE",
+        "url":"%@://%@:%@/stacks",
+        "requires_user_name": "false",
+        "port":{
+          "http_property": "dfs.namenode.http-address",
+          "http_default_port": "50070",
+          "https_property": "dfs.namenode.https-address",
+          "https_default_port": "50470",
+          "regex": "\\w*:(\\d+)",
+          "site": "hdfs-site"
+        }
+      }
+    ]
+  }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/ambari/blob/d845449a/ambari-server/src/main/resources/common-services/HDFS/3.0.0/themes/theme.json
----------------------------------------------------------------------
diff --git a/ambari-server/src/main/resources/common-services/HDFS/3.0.0/themes/theme.json b/ambari-server/src/main/resources/common-services/HDFS/3.0.0/themes/theme.json
new file mode 100644
index 0000000..6f2b797
--- /dev/null
+++ b/ambari-server/src/main/resources/common-services/HDFS/3.0.0/themes/theme.json
@@ -0,0 +1,179 @@
+{
+  "name": "default",
+  "description": "Default theme for HDFS service",
+  "configuration": {
+    "layouts": [
+      {
+        "name": "default",
+        "tabs": [
+          {
+            "name": "settings",
+            "display-name": "Settings",
+            "layout": {
+              "tab-columns": "2",
+              "tab-rows": "1",
+              "sections": [
+                {
+                  "name": "section-namenode",
+                  "display-name": "NameNode",
+                  "row-index": "0",
+                  "column-index": "0",
+                  "row-span": "1",
+                  "column-span": "1",
+                  "section-columns": "1",
+                  "section-rows": "1",
+                  "subsections": [
+                    {
+                      "name": "subsection-namenode-col1",
+                      "row-index": "0",
+                      "column-index": "0",
+                      "row-span": "1",
+                      "column-span": "1"
+                    }
+                  ]
+                },
+                {
+                  "name": "section-datanode",
+                  "display-name": "DataNode",
+                  "row-index": "0",
+                  "column-index": "1",
+                  "row-span": "1",
+                  "column-span": "1",
+                  "section-columns": "1",
+                  "section-rows": "1",
+                  "subsections": [
+                    {
+                      "name": "subsection-datanode-col1",
+                      "row-index": "0",
+                      "column-index": "0",
+                      "row-span": "1",
+                      "column-span": "1"
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        ]
+      }
+    ],
+    "placement": {
+      "configuration-layout": "default",
+      "configs": [
+        {
+          "config": "hdfs-site/dfs.namenode.name.dir",
+          "subsection-name": "subsection-namenode-col1"
+        },
+        {
+          "config": "hadoop-env/namenode_heapsize",
+          "subsection-name": "subsection-namenode-col1"
+        },
+        {
+          "config": "hdfs-site/dfs.namenode.handler.count",
+          "subsection-name": "subsection-namenode-col1"
+        },
+        {
+          "config": "hdfs-site/dfs.namenode.safemode.threshold-pct",
+          "subsection-name": "subsection-namenode-col1"
+        },
+        {
+          "config": "hdfs-site/dfs.datanode.data.dir",
+          "subsection-name": "subsection-datanode-col1"
+        },
+        {
+          "config": "hdfs-site/dfs.datanode.failed.volumes.tolerated",
+          "subsection-name": "subsection-datanode-col1"
+        },
+        {
+          "config": "hadoop-env/dtnode_heapsize",
+          "subsection-name": "subsection-datanode-col1"
+        },
+        {
+          "config": "hdfs-site/dfs.datanode.max.transfer.threads",
+          "subsection-name": "subsection-datanode-col1"
+        }
+      ]
+    },
+    "widgets": [
+      {
+        "config": "hdfs-site/dfs.namenode.name.dir",
+        "widget": {
+          "type": "directories"
+        }
+      },
+      {
+        "config": "hdfs-site/dfs.namenode.safemode.threshold-pct",
+        "widget": {
+          "type": "slider",
+          "units": [
+            {
+              "unit-name": "percent"
+            }
+          ]
+        }
+      },
+      {
+        "config": "hdfs-site/dfs.namenode.handler.count",
+        "widget": {
+          "type": "slider",
+          "units": [
+            {
+              "unit-name": "int"
+            }
+          ]
+        }
+      },
+      {
+        "config": "hadoop-env/namenode_heapsize",
+        "widget": {
+          "type": "slider",
+          "units": [
+            {
+              "unit-name": "GB"
+            }
+          ]
+        }
+      },
+      {
+        "config": "hdfs-site/dfs.datanode.failed.volumes.tolerated",
+        "widget": {
+          "type": "slider",
+          "units": [
+            {
+              "unit-name": "int"
+            }
+          ]
+        }
+      },
+      {
+        "config": "hdfs-site/dfs.datanode.data.dir",
+        "widget": {
+          "type": "directories"
+        }
+      },
+      {
+        "config": "hadoop-env/dtnode_heapsize",
+        "widget": {
+          "type": "slider",
+          "units": [
+            {
+              "unit-name": "GB"
+            }
+          ]
+        }
+      },
+      {
+        "config": "hdfs-site/dfs.datanode.max.transfer.threads",
+        "widget": {
+          "type": "slider",
+          "units": [
+            {
+              "unit-name": "int"
+            }
+          ]
+        }
+      }
+    ]
+  }
+}
+


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