https://community.cloudera.com/t5/Support-Questions/REST-API-how-to-verify-that-component-not-exist-on-node-X/m-p/235065#M196885 <P><A rel="user" href="https://community.cloudera.com/users/26229/uribarih.html" nodeid="26229">@Michael Bronson</A></P><P>You can make the following API call to find out on how many nodes the "SPARK2_THRIFTSERVER" is installed. Please check the property "installed_count" in the response.</P><PRE># curl -iv -u admin:admin -H "X-Requested-By: ambari" -X GET "http://$AMBARI_SERVER:8080/api/v1/clusters/hdp/services/SPARK2/components/SPARK2_THRIFTSERVER"</PRE><P><BR /></P><P>If you want to know the list of hosts where the "SPARK2_THRIFTSERVER" might be installed in your cluster and to know their current state you can make the following API call.</P><PRE># curl -iv -u admin:admin -H "X-Requested-By: ambari" -X GET "http://$AMBARI_SERVER:8080/api/v1/clusters/hdp/services/SPARK2/components/SPARK2_THRIFTSERVER?fields=host_components/HostRoles/host_name,host_components/HostRoles/state"</PRE><P><BR /></P><P>.</P> Mon, 08 Jul 2019 05:27:10 GMT jsensharma 2019-07-08T05:27:10Z https://community.cloudera.com/t5/Support-Questions/REST-API-how-to-verify-that-component-not-exist-on-node-X/m-p/235064#M196884 <P><BR /></P><P>hi all</P><P><BR /></P><P>by the following API we can delete the thrift server component on master01 and master03 nodes</P><P><BR /></P><PRE> # curl -iv -u admin:admin -H "X-Requested-By: ambari" -X DELETE <A href="http://$AMBARI_SERVER:8080/api/v1/clusters/hdp/hosts/master01/host_components/SPARK2_THRIFTSERVER" target="_blank">http://$AMBARI_SERVER:8080/api/v1/clusters/hdp/hosts/master01/host_components/SPARK2_THRIFTSERVER</A></PRE><P><BR /></P><PRE> # curl -iv -u admin:admin -H "X-Requested-By: ambari" -X DELETE <A href="http://$AMBARI_SERVER:8080/api/v1/clusters/hdp/hosts/master03/host_components/SPARK2_THRIFTSERVER" target="_blank">http://$AMBARI_SERVER:8080/api/v1/clusters/hdp/hosts/master03/host_components/SPARK2_THRIFTSERVER</A></PRE><P><BR /></P><P>but how to know by REST API that <STRONG><EM>thrift server component</EM></STRONG> , not defined on specific node ( after deletion )</P><P><BR /></P> Sun, 07 Jul 2019 22:49:23 GMT https://community.cloudera.com/t5/Support-Questions/REST-API-how-to-verify-that-component-not-exist-on-node-X/m-p/235064#M196884 mike_bronson7 2019-07-07T22:49:23Z https://community.cloudera.com/t5/Support-Questions/REST-API-how-to-verify-that-component-not-exist-on-node-X/m-p/235065#M196885 <P><A rel="user" href="https://community.cloudera.com/users/26229/uribarih.html" nodeid="26229">@Michael Bronson</A></P><P>You can make the following API call to find out on how many nodes the "SPARK2_THRIFTSERVER" is installed. Please check the property "installed_count" in the response.</P><PRE># curl -iv -u admin:admin -H "X-Requested-By: ambari" -X GET "http://$AMBARI_SERVER:8080/api/v1/clusters/hdp/services/SPARK2/components/SPARK2_THRIFTSERVER"</PRE><P><BR /></P><P>If you want to know the list of hosts where the "SPARK2_THRIFTSERVER" might be installed in your cluster and to know their current state you can make the following API call.</P><PRE># curl -iv -u admin:admin -H "X-Requested-By: ambari" -X GET "http://$AMBARI_SERVER:8080/api/v1/clusters/hdp/services/SPARK2/components/SPARK2_THRIFTSERVER?fields=host_components/HostRoles/host_name,host_components/HostRoles/state"</PRE><P><BR /></P><P>.</P> Mon, 08 Jul 2019 05:27:10 GMT https://community.cloudera.com/t5/Support-Questions/REST-API-how-to-verify-that-component-not-exist-on-node-X/m-p/235065#M196885 jsensharma 2019-07-08T05:27:10Z