https://community.cloudera.com/t5/Archives-of-Support-Questions/how-to-check-by-API-that-all-hosts-are-are-heart-beating/m-p/195152#M76155 <P><A rel="user" href="https://community.cloudera.com/users/26229/uribarih.html" nodeid="26229">@Michael Bronson</A></P><P>Something like this you can try:</P><PRE># curl -u admin:admin -H 'X-Requested-By: ambari' -X GET "http://hdfcluster1.example.com:8080/api/v1/clusters/TestCluster?fields=hosts/Hosts/host_name,hosts/Hosts/host_state" | grep -B1 host_state </PRE><P>.</P><P>OR</P><PRE># curl -u admin:admin -H 'X-Requested-By: ambari' -X GET "http://hdfcluster1.example.com:8080/api/v1/clusters/TestCluster?fields=hosts/Hosts/host_name,hosts/Hosts/host_state" | grep -B1 HEARTBEAT_LOST OUTPUT ------- "host_name" : "hdfcluster4.example.com", "host_state" : "HEARTBEAT_LOST"</PRE><P>.</P><P>For healthy nodes we can grep like:</P><PRE># curl -u admin:admin -H 'X-Requested-By: ambari' -X GET "http://hdfcluster1.example.com:8080/api/v1/clusters/TestCluster?fields=hosts/Hosts/host_name,hosts/Hosts/host_state" | grep -B1 HEALTHY OUTPUT ------- "host_name" : "hdfcluster1.example.com", "host_state" : "HEALTHY" -- "host_name" : "hdfcluster2.example.com", "host_state" : "HEALTHY" -- "host_name" : "hdfcluster3.example.com", "host_state" : "HEALTHY" </PRE><P>.</P> Tue, 20 Mar 2018 17:05:02 GMT jsensharma 2018-03-20T17:05:02Z https://community.cloudera.com/t5/Archives-of-Support-Questions/how-to-check-by-API-that-all-hosts-are-are-heart-beating/m-p/195151#M76154 <P>what is the API or other CLI to check that all hosts in the cluster are without heart-beat loss ?</P> Tue, 20 Mar 2018 16:30:14 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/how-to-check-by-API-that-all-hosts-are-are-heart-beating/m-p/195151#M76154 mike_bronson7 2018-03-20T16:30:14Z https://community.cloudera.com/t5/Archives-of-Support-Questions/how-to-check-by-API-that-all-hosts-are-are-heart-beating/m-p/195152#M76155 <P><A rel="user" href="https://community.cloudera.com/users/26229/uribarih.html" nodeid="26229">@Michael Bronson</A></P><P>Something like this you can try:</P><PRE># curl -u admin:admin -H 'X-Requested-By: ambari' -X GET "http://hdfcluster1.example.com:8080/api/v1/clusters/TestCluster?fields=hosts/Hosts/host_name,hosts/Hosts/host_state" | grep -B1 host_state </PRE><P>.</P><P>OR</P><PRE># curl -u admin:admin -H 'X-Requested-By: ambari' -X GET "http://hdfcluster1.example.com:8080/api/v1/clusters/TestCluster?fields=hosts/Hosts/host_name,hosts/Hosts/host_state" | grep -B1 HEARTBEAT_LOST OUTPUT ------- "host_name" : "hdfcluster4.example.com", "host_state" : "HEARTBEAT_LOST"</PRE><P>.</P><P>For healthy nodes we can grep like:</P><PRE># curl -u admin:admin -H 'X-Requested-By: ambari' -X GET "http://hdfcluster1.example.com:8080/api/v1/clusters/TestCluster?fields=hosts/Hosts/host_name,hosts/Hosts/host_state" | grep -B1 HEALTHY OUTPUT ------- "host_name" : "hdfcluster1.example.com", "host_state" : "HEALTHY" -- "host_name" : "hdfcluster2.example.com", "host_state" : "HEALTHY" -- "host_name" : "hdfcluster3.example.com", "host_state" : "HEALTHY" </PRE><P>.</P> Tue, 20 Mar 2018 17:05:02 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/how-to-check-by-API-that-all-hosts-are-are-heart-beating/m-p/195152#M76155 jsensharma 2018-03-20T17:05:02Z