question How do I ensure that service is installed on a particular node via ambari REST API? in Support Questions

How do I ensure that service is installed on a particular node via ambari REST API?

kbadani — Fri, 13 Oct 2017 03:14:55 GMT

I want to install 'Zeppelin' service via ambari REST API and have Zeppelin server running on one particular node. How do I do it?

Re: How do I ensure that service is installed on a particular node via ambari REST API?

dbalasundaran — Fri, 13 Oct 2017 03:22:48 GMT

Could you please try :

/api/v1/clusters/clusterName/hosts/hostName/host_components/componentName;

adding service and hostname in the request body

{"{SERVICE}", serviceName, "{HOST}", hostName}

This article has sample calls that would walk you through the process: https://cwiki.apache.org/confluence/display/AMBARI/Adding+a+New+Service+to+an+Existing+Cluster

Hope this helps.

Re: How do I ensure that service is installed on a particular node via ambari REST API?

kbadani — Fri, 13 Oct 2017 04:47:14 GMT

Thanks @dbalasundaran for pointing to the article. This works for me

There is one caveat in this though,

If your cluster is kerberos enabled, then there is one more step required before installing the service in last step:

Send a POST request to "/credentials/kdc.admin.credential" with data as '{ "Credential" : { "principal" : "user@EXAMPLE.COM", "key" : "password", "type" : "temporary" } }'