https://community.cloudera.com/t5/Archives-of-Support-Questions/how-to-know-if-any-service-in-ambari-cluster-need-to-restart/m-p/228707#M67346 <P>the following API will restart all services that restart action is required ( after paramter changes )</P><P>but how to know if any service in ambari cluster need to restart by API ( I mean just to check if restart is needed without to perform restart ? ) </P><P># curl -iv -u admin:admin -H "X-Requested-By: ambari" -X POST -d '{"RequestInfo":{"command":"RESTART","context":"Restart all required services","operation_level":"host_component"},"Requests/resource_filters":[{"hosts_predicate":"HostRoles/stale_configs=true"}]}' <A href="http://$AMBARI_SERVER:8080/api/v1/clusters/$CLUSTER_NAME/reques" target="_blank">http://$AMBARI_SERVER:8080/api/v1/clusters/$CLUSTER_NAME/reques</A></P> Sun, 27 Aug 2017 14:56:56 GMT mike_bronson7 2017-08-27T14:56:56Z https://community.cloudera.com/t5/Archives-of-Support-Questions/how-to-know-if-any-service-in-ambari-cluster-need-to-restart/m-p/228707#M67346 <P>the following API will restart all services that restart action is required ( after paramter changes )</P><P>but how to know if any service in ambari cluster need to restart by API ( I mean just to check if restart is needed without to perform restart ? ) </P><P># curl -iv -u admin:admin -H "X-Requested-By: ambari" -X POST -d '{"RequestInfo":{"command":"RESTART","context":"Restart all required services","operation_level":"host_component"},"Requests/resource_filters":[{"hosts_predicate":"HostRoles/stale_configs=true"}]}' <A href="http://$AMBARI_SERVER:8080/api/v1/clusters/$CLUSTER_NAME/reques" target="_blank">http://$AMBARI_SERVER:8080/api/v1/clusters/$CLUSTER_NAME/reques</A></P> Sun, 27 Aug 2017 14:56:56 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/how-to-know-if-any-service-in-ambari-cluster-need-to-restart/m-p/228707#M67346 mike_bronson7 2017-08-27T14:56:56Z https://community.cloudera.com/t5/Archives-of-Support-Questions/how-to-know-if-any-service-in-ambari-cluster-need-to-restart/m-p/228708#M67347 <P><A rel="user" href="https://community.cloudera.com/users/26229/uribarih.html" nodeid="26229">@uri ben-ari</A></P><P>Following should list all the components that has stale config, and need to be restaretd to get the config changes reflected.</P><PRE># curl -i --user admin:admin -i -H 'X-Requested-By: ambari' -X GET <A href="http://localhost:8080/api/v1/clusters/Sandbox/host_components?HostRoles/stale_configs=true" target="_blank">http://localhost:8080/api/v1/clusters/Sandbox/host_components?HostRoles/stale_configs=true</A> </PRE><P><BR /><BR />Here please replace the following:</P><P><BR />1. "localhost" : with the Ambari FQDN</P><P>2. 8080 : with ambari port.</P><P>3. Sandbox : With cluster Name</P><P>.</P> Sun, 27 Aug 2017 18:09:56 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/how-to-know-if-any-service-in-ambari-cluster-need-to-restart/m-p/228708#M67347 jsensharma 2017-08-27T18:09:56Z