@Michael Bronson Yes, I think the steps are correct, but I think for better understanding you add a step between 2 and 3 :-). Mounting the new FS and updating the fstab before copying across the data from the old mount point. Cheers 🙂 ... View more

@Michael Bronson You will need first to identify the Ambari Service and Component name to be used in the API, this for sure will also bring down the Metrics collector curl -u admin:admin get http://<AMBARI_SERVER>:8080/api/v1/clusters/<CLUSTER_NAME>/services Replace the particular service below <Service_name> with the previous output eg AMBARI_METRICS Stop AMBARI_METRICS curl -u admin:admin -H 'X-Requested-By: ambari' -X PUT -d '{"RequestInfo": {"context" :"Stop service "}, "Body": {"ServiceInfo": {"state": "INSTALLED"}}}' http://<AMBARI_SERVER_HOSTNAME>:8080/api/v1/clusters/<CLUSTER_NAME>/services/<Service_name>; The service will stop check the Ambari UI Hope that helps!! ... View more

@Michael Bronson Something like this you can try: # 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 . OR # 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" . For healthy nodes we can grep like: # 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" . ... View more