Using the Cloudera Manager API to Obtain Configuration Files
You can use the Cloudera Manager API to obtain configuration files.
Retrieving Service and Host Properties
To update a service property using the Cloudera
Manager APIs, you will need to know the name of the property, not just
the display name. If you know the property's display name but not the
property name itself, retrieve the documentation by requesting any
configuration object with the query string
view=FULL
appended to the URL. For
example:http://cm_server_host:7180/api/v49/clusters/Cluster%201/services/service_name/config?view=FULL
Search
the results for the display name of the desired property. For example, a
search for the display name HDFS Service Environment Advanced
Configuration Snippet (Safety Valve) shows that the corresponding
property name is
hdfs_service_env_safety_valve
:{
"name" : "hdfs_service_env_safety_valve",
"require" : false,
"displayName" : "HDFS Service Environment Advanced Configuration Snippet (Safety Valve)",
"description" : "For advanced use onlyu, key/value pairs (one on each line) to be inserted into a roles
environment. Applies to configurations of all roles in this service except client configuration.",
"relatedName" : "",
"validationState" : "OK"
}
Similar to finding service properties, you can also find host properties. First, get the host IDs for a cluster with the URL:
http://cm_server_host:7180/api/v49/hosts
This should return host objects of the form:
{
"hostId" : "2c2e951c-aaf2-4780-a69f-0382181f1821",
"ipAddress" : "10.30.195.116",
"hostname" : "cm_server_host",
"rackId" : "/default",
"hostUrl" : "http://cm_server_host:7180/cmf/hostRedirect/2c2e951c-adf2-4780-a69f-0382181f1821",
"maintenanceMode" : false,
"maintenanceOwners" : [ ],
"commissionState" : "COMMISSIONED",
"numCores" : 4,
"totalPhysMemBytes" : 10371174400
}
Then obtain the host properties by including one of the returned host IDs
in the URL:
http://cm_server_host:7180/api/v49/hosts/2c2e951c-adf2-4780-a69f-0382181f1821?view=FULL