Updated on 2023-12-14 GMT+08:00

Overview

Dashboard

Log in to FusionInsight Manager. Choose Cluster, click the name of the desired cluster, and choose Services. The service management page is displayed, including the functional area and service list.

Figure 1 Service management page

Functional Area

In the functional area of the service management page, you can select a view type and filter and search for services by service type. You can use the advanced search to select required services based on the running status and configuration status.

Service List

The service list on the service management page contains all installed services in the cluster. If the tile view is selected, the services will be displayed in pane style. If you select the list view, the services will be displayed in a table.

In this section, the Tile View is used by default.

The service list displays the running status, configuration status, role type, and number of instances of each service. On this page, you can perform some service maintenance tasks, such as starting, stopping, and restarting services.

Table 1 Service running status

Status

Description

Normal

Indicates that the service is running properly.

Faulty

Indicates that the service cannot run properly.

Partially Healthy

Indicates that some enhanced functions of the service are abnormal.

Not started

Indicates that the service is stopped.

Unknown

Indicates that the initial status of the service cannot be detected.

Starting

Indicates that the service is being started.

Stopping

Indicates that the service is being stopped.

Failed to start

Indicates that the service fails to be started.

Failed to stop

Indicates that the service fails to be stopped.

  • If the running status of a service is Faulty, an alarm is generated. Rectify the fault based on the alarm information.
  • HBase, Hive, Spark, and Loader may be in the Subhealthy state.
    • If Yarn is installed but is abnormal, HBase is in the Subhealthy state.
    • If HBase is installed but is abnormal, Hive, Spark, and Loader are in the Subhealthy state.
Table 2 Service configuration status

Status

Description

Synchronized

Indicates that all service parameter settings have taken effect in the cluster.

Expired

Indicates that the latest configuration is not synchronized and does not take effect after the service parameters are modified. You need to synchronize the configurations and restart the services. You can click next to Configuration Status to view expired configuration items.

Failed

Indicates that a communication or read/write exception occurs during the parameter configuration synchronization. Use Synchronize Configuration to rectify the fault.

Synchronizing

Indicates that the service parameter configuration is being synchronized.

Unknown

Indicates that the initial status of the service cannot be detected.

You can click a service in the service list to perform simple maintenance and management operations on the service, as described in Table 3.

Table 3 Basic maintenance and management

Menu Item on the UI

Description

Start Service

Start a specified service in the cluster.

Stop Service

Stop a specified service in the cluster.

Restart Service

Restart a specified service in the cluster.

NOTE:

If a service is restarted, other services that depend on this service will be unavailable. Therefore, select Restart upper-layer services. Determine whether to perform this operation based on the displayed service list. Services are restarted one by one due to their dependency. Table 4 describes the restart duration of a single service.

Service Rolling Restart

Restart a specified service in the cluster without interrupting services. For details about the parameter settings, see Table 1.

Synchronize Configuration

  • Enable new configuration parameters for a specified service in the cluster.
  • Distribute new configuration parameters for services whose Configuration Status is Expired.
NOTE:

After some services are synchronized, restart the services for the settings to take effect.

Table 4 Restart duration for reference

Service

Restart Duration

Startup Duration

Remarks

IoTDB

3 min

IoTDBServer: 3 min

-

CDL

2 min

CDLConnector: 1 min

CDLService: 1 min

-

ClickHouse

4 min

ClickHouseServer: 2 min

ClickHouseBalancer: 2 min

-

HDFS

10min+x

NameNode: 4 min + x

DataNode: 2 min

JournalNode: 2 min

Zkfc: 2 min

x indicates the NameNode metadata loading duration. It takes about 2 minutes to load 10,000,000 files. For example, x is 10 minutes for 50 million files. The startup duration fluctuates with reporting of DataNode data blocks.

Yarn

5 min + x

ResourceManager: 3 min + x

NodeManager: 2 min

x indicates the time required for restoring ResourceManager reserved tasks. It takes about 1 minute to restore 10,000 reserved tasks.

MapReduce

2 min + x

JobHistoryServer: 2 min + x

x indicates the scanning duration of historical tasks. It takes about 2.5 minutes to scan 100,000 tasks.

ZooKeeper

2 min + x

quorumpeer: 2 min + x

x indicates the duration for loading znodes. It takes about 1 minute to load 1 million znodes.

Hive

3.5 min

HiveServer: 3 min

MetaStore: 1 min 30s

WebHcat: 1 min

Hive service: 3 min

-

Spark2x

5 min

JobHistory2x: 5 min

SparkResource2x: 5 min

JDBCServer2x: 5 min

-

Flink

4 min

FlinkResource: 1 min

FlinkServer: 3 min

-

Kafka

2 min + x

Broker: 1 min + x

x indicates the data restoration duration. It takes about 2 minutes to start 20,000 partitions for a single instance.

Storm

6 min

Nimbus: 3 min

UI: 1 min

Supervisor: 1 min

Logviewer: 1 min

-

Flume

3 min

Flume: 2 min

MonitorServer: 1 min

-

Doris

2 min

FE: 1min

BE: 1min

DBroker: 1min

-