API + how to know by API command all machines in ambari cluster

[#1]

how to know by API command all machines in ambari cluster ,

example - master01,master02,master03,worker01,worker02,worker03,kafka01,kafka02 etc

[#2 · Accepted solution]

This Rest call will get you all host names of nodes in the cluster

http://your.ambari.server/api/v1/clusters/yourClusterName/hosts

See these links on the Ambari API

• https://github.com/apache/ambari/blob/trunk/ambari-server/docs/api/v1/hosts.md
• https://github.com/apache/ambari/blob/trunk/ambari-server/docs/api/v1/index.md

[#3]

You can get the JSON response.

https://github.com/apache/ambari/blob/trunk/ambari-server/docs/api/v1/hosts.md

http://ambari-server:8080/clusters/:clusterName/hosts

To extract the hostnames easier, you could try JSONPath

$.items[*].Hosts.host_name

Or Python with Requests library

r = requests.get('...')
hosts = ','.join(x['Hosts']['host_name'] for x in r.json()['items'])