question Re: Is there a way in ambari to find dependencies of services on each other? in Archives of Support Questions (Read Only)

Is there a way in ambari to find dependencies of services on each other?

vrathod — Fri, 10 Mar 2017 00:54:12 GMT

I want to get a list of services that are dependent on a particular service. Is there a direct api call to do that?

Re: Is there a way in ambari to find dependencies of services on each other?

jsensharma — Fri, 10 Mar 2017 00:57:21 GMT

Ambari services uses "metainfo.xml" file which provides the information about the dependencies "the list of components that this component depends on"

https://cwiki.apache.org/confluence/display/AMBARI/Writing+metainfo.xml

For example if we want to see "HIVE_SERVER" service is dependent on which all components.

https://github.com/apache/ambari/blob/release-2.4.2/ambari-server/src/main/resources/common-services/HIVE/0.12.0.2.0/metainfo.xml#L64-L87

Re: Is there a way in ambari to find dependencies of services on each other?

jsensharma — Fri, 10 Mar 2017 01:04:30 GMT

@vrathod

The following ambari API can be used to see the required components list by a particular service like "Hive"

http://localhost:8080/api/v1/stacks/HDP/versions/2.5/services/HIVE

required_services: ["ZOOKEEPER",
"HDFS",
"YARN",
"TEZ",
"PIG",
"SLIDER"
],

Re: Is there a way in ambari to find dependencies of services on each other?

vrathod — Fri, 10 Mar 2017 01:08:22 GMT

@Jay SenSharma Right, this gives me the services required for Hive. But what if I want to find what services are dependent on Hive? Maybe I can reverse look up by making this call for each service

Re: Is there a way in ambari to find dependencies of services on each other?

kramakrishnan — Fri, 10 Mar 2017 01:11:29 GMT

@vrathod

You can use stack service API

e.g http://<AMBARI_SERVER_HOST>/api/v1/stacks/HDP/versions/<HDP_VERSION/services/<SERVICE_NAME>;

And use required_services from the response.

http://localhost:8080/api/v1/stacks/HDP/versions/2.6/services/AMBARI_INFRA

Re: Is there a way in ambari to find dependencies of services on each other?

jsensharma — Sat, 18 Mar 2017 10:49:38 GMT

@vrathod

Please accept the thread, if you do not have any further query related to this HCC thread.