Read service-wide configuration values via API

Tomas79 — Thu, 21 Nov 2019 17:32:47 GMT

Hi,

I am wondering if it is possible to get Service-Wide configurations via read_config method of the RoleConfigGroupsResourceApi class.

https://archive.cloudera.com/cm6/6.3.0/generic/jar/cm_api/swagger-html-sdk-docs/python/docs/RoleConfigGroupsResourceApi.html#read_config

The read_roles method of RolesResourceAPI returns theses roles:

CD-HDFS-eHtEMKVf-DATANODE-BASE CD-HDFS-eHtEMKVf-SECONDARYNAMENODE-BASE CD-HDFS-eHtEMKVf-HTTPFS-BASE CD-HDFS-eHtEMKVf-DATANODE-BASE CD-HDFS-eHtEMKVf-DATANODE-BASE CD-HDFS-eHtEMKVf-NAMENODE-BASE

But when I query all these roles, I cannot find the Service-Wide property of Advanced configuration for core-site.xml

Reading configuration for CD-HDFS-eHtEMKVf-DATANODE-BASE {'items': [{'default': None, 'description': 'For advanced use only, key-value pairs (one on ' "each line) to be inserted into a role's " 'environment. Applies to configurations of this ' 'role except client configuration.', 'display_name': 'DataNode Environment Advanced Configuration ' 'Snippet (Safety Valve)', 'name': 'DATANODE_role_env_safety_valve', 'related_name': '', 'required': False, 'sensitive': False, 'validation_message': None, 'validation_state': 'OK', 'validation_warnings_suppressed': False, 'value': None}, {'default': '{"critical":"never","warning":"1000000.0"}', 'description': 'The health test thresholds of the number of blocks ' 'on a DataNode', 'display_name': 'DataNode Block Count Thresholds', 'name': 'datanode_block_count_thresholds', 'related_name': '', 'required': False, 'sensitive': False, 'validation_message': None, 'validation_state': 'OK', 'validation_warnings_suppressed': None, 'value': None}, {'default': None,

Maybe I should search in other classes? Please advise,

Thanks

Re: Read service-wide configuration values via API

Tomas79 — Wed, 27 Nov 2019 07:47:34 GMT

The solution is quite simple, was not aware that the service-wide configurations are not in roles but in services. So the solution is to use a ServicesResourceApi endpoint and read_service_config method.

Something like this:

def get_service_config(self, service_name): """Returns the configuration of the service""" services_instance = cm_client.ServicesResourceApi(self.api) view = 'summary' try: api_response = services_instance.read_service_config( self.cluster_name, service_name, view=view) return api_response.to_dict() except ApiException as exception: print(f"Exception when calling ServicesResourceApi->read_service_config: {exception}\n")

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Read service-wide configuration values via API

Re: Read service-wide configuration values via API