def _exec_ambari_command(self, ambari_info, body, cmd_uri):
LOG.debug('PUT URI: {0}'.format(cmd_uri))
result = self._put(cmd_uri, ambari_info, data=body)
if result.status_code == 202:
LOG.debug(
'PUT response: {0}'.format(result.text))
json_result = json.loads(result.text)
href = json_result['href'] + '/tasks?fields=Tasks/status'
success = self._wait_for_async_request(href, ambari_info)
if success:
LOG.info(
_LI("Successfully changed state of Hadoop components "))
else:
LOG.critical(_LC('Failed to change state of Hadoop '
'components'))
raise ex.HadoopProvisionError(
_('Failed to change state of Hadoop components'))
else:
LOG.error(
_LE('Command failed. Status: %(status)s, response: '
'%(response)s'),
{'status': result.status_code, 'response': result.text})
raise ex.HadoopProvisionError(_('Hadoop/Ambari command failed.'))
def _hdfs_ha_update_host_component(self, hac, host, component, state):
update_host_component_url = ('http://{0}/api/v1/clusters/{1}'
'/hosts/{2}/host_components/{3}').format(
hac['ambari_info'].get_address(),
hac['name'], host, component)
component_state = {"HostRoles": {"state": state}}
body = json.dumps(component_state)
result = self._put(update_host_component_url,
hac['ambari_info'], data=body)
if result.status_code == 202:
json_result = json.loads(result.text)
request_id = json_result['Requests']['id']
success = self._wait_for_async_request(self._get_async_request_uri(
hac['ambari_info'], hac['name'], request_id),
hac['ambari_info'])
if success:
LOG.info(_LI("HDFS-HA: Host component updated successfully: "
"{0} {1}").format(host, component))
else:
LOG.critical(_LC("HDFS-HA: Host component update failed: "
"{0} {1}").format(host, component))
raise ex.NameNodeHAConfigurationError(
'Configuring HDFS HA failed. %s' % result.text)
elif result.status_code != 200:
LOG.error(
_LE('Configuring HDFS HA failed. {0}').format(result.text))
raise ex.NameNodeHAConfigurationError(
'Configuring HDFS HA failed. %s' % result.text)
def _install_services(self, cluster_name, ambari_info):
LOG.info(_LI('Installing required Hadoop services ...'))
ambari_address = ambari_info.get_address()
install_url = ('http://{0}/api/v1/clusters/{'
'1}/services?ServiceInfo/state=INIT'.format(
ambari_address, cluster_name))
body = ('{"RequestInfo" : { "context" : "Install all services" },'
'"Body" : {"ServiceInfo": {"state" : "INSTALLED"}}}')
result = self._put(install_url, ambari_info, data=body)
if result.status_code == 202:
json_result = json.loads(result.text)
request_id = json_result['Requests']['id']
success = self._wait_for_async_request(self._get_async_request_uri(
ambari_info, cluster_name, request_id),
ambari_info)
if success:
LOG.info(_LI("Install of Hadoop stack successful."))
self._finalize_ambari_state(ambari_info)
else:
LOG.critical(_LC('Install command failed.'))
raise ex.HadoopProvisionError(
_('Installation of Hadoop stack failed.'))
elif result.status_code != 200:
LOG.error(
_LE('Install command failed. {0}').format(result.text))
raise ex.HadoopProvisionError(
_('Installation of Hadoop stack failed.'))
def start_services(self, cluster_name, cluster_spec, ambari_info):
LOG.info(_LI('Starting Hadoop services ...'))
LOG.info(
_LI('Cluster name: %(cluster_name)s, Ambari server address:'
' %(server_address)s'), {
'cluster_name': cluster_name,
'server_address': ambari_info.get_address()
})
start_url = ('http://{0}/api/v1/clusters/{1}/services?ServiceInfo/'
'state=INSTALLED'.format(ambari_info.get_address(),
cluster_name))
body = ('{"RequestInfo" : { "context" : "Start all services" },'
'"Body" : {"ServiceInfo": {"state" : "STARTED"}}}')
self._fire_service_start_notifications(cluster_name, cluster_spec,
ambari_info)
result = self._put(start_url, ambari_info, data=body)
if result.status_code == 202:
json_result = json.loads(result.text)
request_id = json_result['Requests']['id']
success = self._wait_for_async_request(
self._get_async_request_uri(ambari_info, cluster_name,
request_id), ambari_info)
if success:
LOG.info(
_LI("Successfully started Hadoop cluster '{0}'.").format(
cluster_name))
else:
LOG.critical(_LC('Failed to start Hadoop cluster.'))
raise ex.HadoopProvisionError(
_('Start of Hadoop services failed.'))
elif result.status_code != 200:
LOG.error(
_LE('Start command failed. Status: %(status)s, response: '
'%(response)s'), {
'status': result.status_code,
'result': result.text
})
raise ex.HadoopProvisionError(
_('Start of Hadoop services failed.'))
def start_services(self, cluster_name, cluster_spec, ambari_info):
LOG.info(_LI('Starting Hadoop services ...'))
LOG.info(_LI('Cluster name: %(cluster_name)s, Ambari server address: '
'%(server_address)s'),
{'cluster_name': cluster_name,
'server_address': ambari_info.get_address()})
start_url = ('http://{0}/api/v1/clusters/{1}/services?ServiceInfo/'
'state=INSTALLED'.format(
ambari_info.get_address(), cluster_name))
body = ('{"RequestInfo" : { "context" : "Start all services" },'
'"Body" : {"ServiceInfo": {"state" : "STARTED"}}}')
self._fire_service_start_notifications(
cluster_name, cluster_spec, ambari_info)
result = self._put(start_url, ambari_info, data=body)
if result.status_code == 202:
json_result = json.loads(result.text)
request_id = json_result['Requests']['id']
success = self._wait_for_async_request(
self._get_async_request_uri(ambari_info, cluster_name,
request_id), ambari_info)
if success:
LOG.info(
_LI("Successfully started Hadoop cluster '{0}'.").format(
cluster_name))
else:
LOG.critical(_LC('Failed to start Hadoop cluster.'))
raise ex.HadoopProvisionError(
_('Start of Hadoop services failed.'))
elif result.status_code != 200:
LOG.error(
_LE('Start command failed. Status: %(status)s, '
'response: %(response)s'),
{'status': result.status_code, 'response': result.text})
raise ex.HadoopProvisionError(
_('Start of Hadoop services failed.'))
