Get the information of a specific cluster

We can also get the information of a specific cluster

1. Show a specific cluster in Ambari

   mycluster = client.get_cluster('cluster1')
   print mycluster
   print mycluster.to_json_dict()
   print"\n"

   mycluster is a ClusterModel object which has many useful methods.

2. Show all hosts in the cluster

   clusters_hosts = mycluster.get_all_hosts()
   print clusters_hosts.to_json_dict()
   print clusters_hosts
   print"\n"

3. Show a specific host in the cluster

   host1 = mycluster.get_host('host1')
   print host1
   print host1.clusterRef.cluster_name
   print host1.to_json_dict()
   print"\n"

4. Show all components of a host

   host1_comp = host1.get_host_components()
   print host1_comp
   print host1_comp.to_json_dict()
   print"\n"

5. Show a specific service of a cluster

   nn = host1.get_host_component("NAMENODE")
   print nn
   print nn.to_json_dict()
   print nn.clusterRef.cluster_name
   print"\n"

6. Show all services in the cluster

   serviceList = mycluster.get_all_services()
   print serviceList
   print serviceList.to_json_dict()
   print"\n"

7. Show a specific service of a cluster

   ganglia = mycluster.get_service("GANGLIA")
   print  ganglia
   print ganglia.to_json_dict()
   print"\n"

8. Show all components of a service

   ganglia_comps = ganglia.get_service_components()
   print ganglia_comps
   print ganglia_comps.to_json_dict()
   print"\n"

9. Show a specific component of a service

   ganglia_comp1 = ganglia.get_service_component('GANGLIA_MONITOR')
   print ganglia_comp1
   print ganglia_comp1.to_json_dict()
   print ganglia_comp1.clusterRef.cluster_name
   print"\n"

10. Stop a service

    ganglia.stop()

11. Satrt a service

    ganglia.start()