Is it possible to get Impala hostname or datanodes information using Cloudera Manager API?

devdb — Mon, 02 Aug 2021 15:59:05 GMT

Is it possible to get Impala hostname or datanodes information using Cloudera Manager API?
I'm trying to automate some tests where I require to get the Impala hostname to run some connection checks.

I dont want to hardcode the Impala hostnames in the tests. The tests would run on different environments so would like to find the hostname information or IP address of the configured Impala data nodes from Cloudera Manager API?
I'm able to get all the hosts IP addresses from the API but cannot filter or query a specific IP belonging to Impala from the response.

Our organisation is using

v33 API

Cloudera Manager 6.3.0

Thanks,

DevDB

Re: Is it possible to get Impala hostname or datanodes information using Cloudera Manager API?

GangWar — Tue, 03 Aug 2021 14:54:19 GMT

@devdb Take a look of this may be it can help :

https://archive.cloudera.com/cm7/7.2.4/generic/jar/cm_api/apidocs/

Also you can get the hosts details from this :

http://CM-SERVER:7180/api/v19/clusters/cluster1/services

For each ‘hosts’ in http://cm:7180/api/v19/hosts
iterate through the hostId …

{
  "items" : [ {
    "maintenanceOwners" : [ ],
    "hostId" : "15b5c47f-9156-4347-abd4-efbc79d27ba2",               <=== hostid
    "ipAddress" : "IP",
    "hostname" : "host",

http://cm:7180/api/v19/hosts/15b5c47f-9156-4347-abd4-efbc79d27ba2. which should give you the roleName

...
{
    "clusterName" : "Cluster 1",
    "serviceName" : "HDFS-1",
    "roleName" : "HDFS-1-DATANODE-d1ee4c53b9fbc4786263f0420c5157e8"
  }, {
...

using the roleName

http://cm:7180/api/v19/clusters/Cluster%201/services/HDFS-1/roles/HDFS-1-DATANODE-d1ee4c53b9fbc4786263f0420c5157e8

Also full deployment details http://cm:7180/api/v19/cm/deployment

question Is it possible to get Impala hostname or datanodes information using Cloudera Manager API? in Support Questions

Is it possible to get Impala hostname or datanodes information using Cloudera Manager API?

Re: Is it possible to get Impala hostname or datanodes information using Cloudera Manager API?