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  1. Add components to hosts. The components will show up on the Ambari web UI in the host view with the  Install Pending...  state.

    Code Block
    languagebash
    curl -v -k -i -u admin:admin -H 'X-Requested-By: ambari' -X POST -d '
{
  "RequestInfo":{
    "query":"Hosts/host_name.in(c6401.ambari.apache.org,c6402.ambari.apache.org,c6403.ambari.apache.org)"
  },
  "Body":{
    "host_components":[
    {
      "HostRoles":{
        "component_name":"HBASE_REGIONSERVER"
      }
    },
    {
      "HostRoles":{
        "component_name":"DATANODE"
      }
    },
    {
      "HostRoles":{
        "component_name":"TEZ_CLIENT"
      }
    }
    ]
  }
}' $HTTP_PROTOCOL://$CONSOLE_NODE:$PORT/api/v1/clusters/$CLUSTER/hosts

  2. Install components on hosts

    Code Block
    languagebash
    curl -v -k -i -u admin:admin -H 'X-Requested-By: ambari' -X PUT --data '
{
   "RequestInfo":{
      "context":"Install components on hosts"
   },
   "Body":{
      "HostRoles":{
         "state":"INSTALLED"
      }
   }
}' "$HTTP_PROTOCOL://$CONSOLE_NODE:$PORT/api/v1/clusters/$CLUSTER/host_components?HostRoles/component_name.in(DATANODE,HBASE_REGIONSERVER,TEZ_CLIENT)&HostRoles/host_name.in(c6401.ambari.apache.org,c6402.ambari.apache.org,c6403.ambari.apache.org)"

    Alternatively, you can kick off an install of components via a bit more implicit REST API call that kicks off installation on all  hosts.

    Code Block
    languagebash
    curl -v -k -i -u admin:admin -H 'X-Requested-By: ambari' -X PUT -d '
{ "HostRoles": { "state":"INSTALLED" } }
' $HTTP_PROTOCOL://$CONSOLE_NODE:$PORT/api/v1/clusters/$CLUSTER/host_components?HostRoles/state=INIT

  3. Start components on hosts

    Code Block
    languagebash
    curl -v -k -i -u admin:admin -H 'X-Requested-By: ambari' -X PUT --data '
{
   "RequestInfo":{
      "context":"Start components on hosts"
   },
   "Body":{
      "HostRoles":{
         "state":"STARTED"
      }
   }
}' "$HTTP_PROTOCOL://$CONSOLE_NODE:$PORT/api/v1/clusters/$CLUSTER/host_components?HostRoles/component_name.in(DATANODE,HBASE_REGIONSERVER,TEZ_CLIENT)&HostRoles/host_name.in(c6401.ambari.apache.org,c6402.ambari.apache.org,c6403.ambari.apache.org)"

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