E-MapReduce (EMR) records events that occur in a Hadoop cluster in Event Center and automatically synchronizes the events to CloudMonitor. This topic describes how to view the events of a Hadoop cluster in the EMR console and configure event alert rules in the CloudMonitor console.
Limits
Only events that occur in Hadoop clusters created on the EMR on ECS page are displayed. For more information about events that occur in DataLake, Dataflow, online analytical processing (OLAP), DataServing, or custom clusters on the EMR on ECS page, see Manage events.
View events in Event Center
Go to the Event Center tab.
Log on to the EMR console. In the left-side navigation pane, click EMR on ECS.
In the top navigation bar, select the region in which your cluster resides and select a resource group based on your business requirements.
On the EMR on ECS page, find the desired cluster and click the ID of the cluster.
Click the Monitoring tab.
On the Event Center tab, configure filter conditions to query events.
The filter conditions include Event Code, Event Level, Event Source, Event Type, and Select Time.
Event Level
Value
Description
CRITICAL
Critical
WARN
Warning
INFO
Information
Event Type
Value
Description
Cluster
Cluster events. Cluster events record the status changes of cluster resources, including the clusters, node groups, and services.
System
System events. System events refer to the events that occurred in the control service-related automation process. System events are not triggered by users.
HealthCheck
Health check events. Health check events record exceptions on health checks of services, components, and hosts.
Services that support health check: YARN, HDFS, Hive, Spark, ZooKeeper, Kudu, HBase, ClickHouse, Doris, StarRocks, Flink, Kafka, Presto, Tez, Kyuubi, Impala, Knox, OpenLDAP, and Ranger.
Find a desired event and click Details in the Actions column to view the details of the event.
Parameter
Description
Event Code
The code of the event. You can use the event code to search for events of the same type.
Event Name
The name of the event.
Event Level
The severity level of the event. Valid values: INFO, WARN, and CRITICAL.
Occurred At
The time when the event occurred.
Event Type
The type of the event. Valid values: Cluster, System, and HealthCheck.
Event Source
The source that triggers the event. Valid values:
HostName: node
Component: component
Service: service
Event Content
The detailed description of the event.
Subscribe to event-triggered alerts
Click Subscribe to Event-triggered Alert in the upper-right corner of the Event Center tab. In the CloudMonitor console, configure event-triggered alert rules. For more information, see Create an event-triggered alert rule.