Data Proc API, REST: Cluster.ListHosts

Field

Description

clusterId

string

Required field. ID of the cluster to list hosts for.

To get a cluster ID, make a ClusterService.List request.

Field

Description

pageSize

string (int64)

The maximum number of results per page to return. If the number of available
results is larger than pageSize, the service returns a ListClusterHostsResponse.nextPageToken
that can be used to get the next page of results in subsequent list requests.
Default value: 100.

pageToken

string

Page token. To get the next page of results, set pageToken to the
ListClusterHostsResponse.nextPageToken returned by a previous list request.

filter

string

A filter expression that filters hosts listed in the response.

The expression must specify:

1. The field name. Currently you can use filtering only on Cluster.name field.
2. An = operator.
3. The value in double quotes ("). Must be 3-63 characters long and match the regular expression [a-z][-a-z0-9]{1,61}[a-z0-9].
   Example of a filter: name=my-host

Field

Description

hosts[]

Host

Requested list of hosts.

nextPageToken

string

Token for getting the next page of the list. If the number of results is greater than
the specified ListClusterHostsRequest.pageSize, use next_page_token as the value
for the ListClusterHostsRequest.pageToken parameter in the next list request.

Each subsequent page will have its own next_page_token to continue paging through the results.

Field

Description

name

string

Name of the Data Proc host. The host name is assigned by Data Proc at creation time
and cannot be changed. The name is generated to be unique across all Data Proc
hosts that exist on the platform, as it defines the FQDN of the host.

subclusterId

string

ID of the Data Proc subcluster that the host belongs to.

health

enum (Health)

Status code of the aggregated health of the host.

• HEALTH_UNKNOWN: Object is in unknown state (we have no data).
• ALIVE: Object is alive and well (for example, all hosts of the cluster are alive).
• DEAD: Object is inoperable (it cannot perform any of its essential functions).
• DEGRADED: Object is partially alive (it can perform some of its essential functions).

computeInstanceId

string

ID of the Compute virtual machine that is used as the Data Proc host.

role

enum (Role)

Role of the host in the cluster.

• ROLE_UNSPECIFIED

• MASTERNODE: The subcluster fulfills the master role.

  Master can run the following services, depending on the requested components:

• HDFS: Namenode, Secondary Namenode
• YARN: ResourceManager, Timeline Server
• HBase Master
• Hive: Server, Metastore, HCatalog
• Spark History Server
• Zeppelin
• ZooKeeper

• DATANODE: The subcluster is a DATANODE in a Data Proc cluster.

  DATANODE can run the following services, depending on the requested components:

• HDFS DataNode
• YARN NodeManager
• HBase RegionServer
• Spark libraries

• COMPUTENODE: The subcluster is a COMPUTENODE in a Data Proc cluster.

  COMPUTENODE can run the following services, depending on the requested components:

• YARN NodeManager
• Spark libraries